| Entries |
| Document | Title | Date |
|---|
| 20080202764 | CONSUMABLE DOWNHOLE TOOLS - A method of removing a downhole tool from a wellbore comprising contacting the tool with a heat source wherein the tool comprises at least one load-bearing component comprising a thermally degradable material. A method of reducing the structural integrity of a downhole tool comprising fabricating the load-bearing components of the tool from a thermally degradable material. A method of removing a downhole tool comprising mechanically milling and/or drilling the tool from a wellbore wherein the tool comprises at least one load bearing component comprising a phenolic resin wherein the phenolic resin comprises a rosole, a novalac or combinations thereof. | 08-28-2008 |
| 20080245532 | APPARATUS AND METHODS OF MILLING A RESTRICTED CASING SHOE - A method of removing a restriction in a tubular located in a well includes providing a drilling assembly with a drill bit and a reamer, the reamer having a cutting structure for removing the restriction; drilling through a lower portion of the tubular; expanding the reamer at a location below the restriction; and urging the reamer back toward the restriction to remove the restriction. | 10-09-2008 |
| 20080296027 | COILED TUBING WIRELINE CUTTER - A wireline cutter comprises a primary housing with a first axial bore configured to receive a wireline positioned within a well bore, and a first blade mounted within the primary housing and operable to cut the wireline. A method of cutting a wireline in a well bore comprises running a wireline cutter into the well bore, receiving the wireline within the wireline cutter, and cutting the wireline with the wireline cutter. A one-trip cutting system for use in a well bore comprises a wireline cutter, and a coiled tubing cutter. A method for cutting a coiled tubing with a wireline disposed therein comprises running a system comprising a wireline cutter and a coiled tubing cutter into the well bore, cutting the coiled tubing with the coiled tubing cutter, and cutting the wireline with the wireline cutter, wherein both cutting steps are performed in one trip into the well bore. | 12-04-2008 |
| 20090000792 | RETRIEVABLE BRIDGE PLUG - A method and apparatus for a bridge plug for isolating portions of a downhole casing is provided comprising a retrievable upper mandrel assembly and a lower mandrel assembly coupled to the upper mandrel assembly, wherein the lower mandrel assembly comprises a drillable material. | 01-01-2009 |
| 20090050334 | Conditioning Ferrous Alloys into Cracking Susceptible and Fragmentable Elements for Use in a Well - A technique includes providing a tool to be deployed in a well to perform a downhole function. The downhole function requires a minimum structural integrity for an element of the tool. The technique includes forming at least part of the element from a ferrous alloy and charging the alloy with hydrogen cause the element to be more prone to cracking than before the hydrogen charging. | 02-26-2009 |
| 20090101358 | Sealing device - A decomposable sealing device is described for use in liquid-filled pipes or boreholes, which is characterised in that the sealing device comprises a sleeve-shaped element ( | 04-23-2009 |
| 20090107684 | Applications of degradable polymers for delayed mechanical changes in wells - Degradable polylactic or polyhydroxyalkanoate polymers may be used to viscosify aqueous fluids for use in wells, Sand control screen or liner can be coated with a solid degradable polymer during placement in a well. Mechanical changes or flow changes in a well can be caused by solid degradable polymer that changes physical properties after it is placed in a well. Parts of devices or entire devices can be made of solid degradable polymer that converts to a fluid after selected times in an aqueous environment in a well. | 04-30-2009 |
| 20090126940 | Method and System for Well Production - Disclosed herein are methods for preparing a wellbore for production or injection. The methods may include the steps of positioning a completion longer than 300 m comprising an inflow control device (ICD) having radial flow paths in the wellbore adjacent to a filtercake and determining the pressure required to lift the filtercake off of the wellbore. The radial flow paths of the ICD are designed such that when the filtercake adjacent to a downstream portion of the ICD completion is removed, the pressure drop across the first downstream part of the ICD completion is sufficient to maintain a drawdown pressure high enough such that the second upstream filtercake is also removed. | 05-21-2009 |
| 20090151958 | TEMPORARY WELL ZONE ISOLATION - Disclosed herein is a temporary well isolation device, which is sealingly disposable in downhole tubing, and which has a housing with an axial passage. The temporary well isolation device also has frangible barrier element within the housing, where the frangible barrier element is sealingly engaged in the passage blocking fluid flow through the passage. The frangible barrier element bears a load from fluid pressure. The temporary well isolation device also has a disengageable constraint in contact with a frangible barrier element so as to redirect the load on the frangible barrier element from a first component of the load to a second component of the load, thereby preventing rupture of the frangible barrier element. Also disclosed herein is a method for disintegrating a frangible barrier element disposed in a passage of a temporary well isolation device. | 06-18-2009 |
| 20090183884 | METHOD FOR SEALING WELLBORE LEAKAGE AND SHUTTING-OFF OF WATER PRODUCING ZONES - A method for sealing a wellbore includes moving a running tool with a sealing material disposed therein into a wellbore proximate a portion of the wellbore to be sealed. A cylinder is moved into the wellbore along with the running tool proximate to the portion to be sealed. The cylinder defines an annular space between an exterior thereof and an interior of the wellbore. The sealing material is deployed into the annular space. The running tool is then removed from the wellbore. | 07-23-2009 |
| 20090250226 | Method for hydraulic rupturing of downhole glass disc - A method for rupturing a glass disc in a well completion tool located downhole in a section of production tubing includes providing a wellhead isolation tool, or tree saver, to isolate the wellhead Christmas tree, adding a pressurized fluid to the tubing/casing annulus and pumping a disc rupturing fluid into the production tubing via the tree saver until the disc is ruptured. Following rupture, the pump can be rapidly stopped, or slowed, and started to create a water hammer effect that removes any glass shards remaining in the disc holder. | 10-08-2009 |
| 20090255686 | METHOD FOR PROVIDING A TEMPORARY BARRIER IN A FLOW PATHWAY - A flow conduit may have at least one orifice, which conduit is in the vicinity of a flow source. The source is at least partially covered (and flow blocked by) an optional temporary coating or barrier (e.g. filter cake). The flow pathway between the orifice and the source is temporarily blocked with a degradable material. A delayed degradation material layer is present over or covering the degradable material. The delayed degradation material layer degrades at a rate slower than the degradable barrier. The degradable material and delayed degradation material layer disintegrate (e.g. via time, temperature, a solvent). The degradable material optionally produces a product that removes the temporary coating. The method is useful in one context of recovering hydrocarbons where the flow conduit is the casing or liner of the well and the flow source is a subterranean reservoir where the coating is filter cake. | 10-15-2009 |
| 20090321085 | PUMP OFF JUNK MILL - A device for removing junk from a well by attaching to a tubing string a mill body with a removable milling core and lowering the assembly into a well. A movable collet and check valve are located in the milling core. The milling core can be separated from the mill body by dropping a ball bearing into the tubing and then feeding water under pressure into the tubing behind the ball bearing. | 12-31-2009 |
| 20100000741 | Method and apparatus to remove composite frac plugs from casings in oil and gas wells - A process to drill through a composite frac plug in an oil well utilizes an improved mill, rotates drill pipe at one hundred to five hundred rpm, circulates drilling fluid such that the velocity of said fluid upwardly over said exterior of the drill pipe is in the range of three hundred to four hundred and seventy five feet per minute, and applies one thousand to three thousand pounds of slack off weight. | 01-07-2010 |
| 20100065282 | METHOD OF DRILLING OUT A REAMING TOOL - A reaming tool includes a tubular body having a nose portion with a concave center. A plurality of blades defining junk slots therebetween extend axially behind the nose and taper outwardly from the exterior of the tubular body. Rotationally leading edges of the blades carry a plurality of cutting elements from the axially leading ends. Selected surfaces and edges of the blades bear tungsten carbide, which may comprise crushed tungsten carbide. The shell of the nose is configured to ensure drillout from the centerline thereof toward the side wall of the tubular body. A method of drilling out a reaming tool is also disclosed. | 03-18-2010 |
| 20100101802 | Drilling Head for Reboring a Stuck Valve - The present invention relates to a drilling head for reboring a stuck valve or drilling into the formation downhole. The invention furthermore relates to a drilling tool comprising the drilling head and a driving unit. The drilling head comprises a hole saw beside a drill bit for cutting out a piece from the stuck valve. Furthermore, the invention relates to a drilling system comprising the drilling tool and a driving tool for moving the drilling tool downhole, a method of drilling; and a use of the drilling head. | 04-29-2010 |
| 20100101803 | Consumable Downhole Tools - A method of removing a downhole tool from a wellbore comprising contacting the tool with a heat source wherein the tool comprises at least one load-bearing component comprising a thermally degradable material. A method of reducing the structural integrity of a downhole tool comprising fabricating the load-bearing components of the tool from a thermally degradable material. A method of removing a downhole tool comprising mechanically milling and/or drilling the tool from a wellbore wherein the tool comprises at least one load bearing component comprising a phenolic resin wherein the phenolic resin comprises a rosole, a novalac or combinations thereof. | 04-29-2010 |
| 20100108327 | Consumable Downhole Tools - A downhole tool having a body or structural component comprises a material that is at least partially consumed when exposed to heat and a source of oxygen. The material may comprise a metal, such as magnesium, which is converted to magnesium oxide when exposed to heat and a source of oxygen. The downhole tool may further comprise a torch with a fuel load that produces the heat and source of oxygen when burned. The fuel load may comprise a flammable, non-explosive solid, such as thermite. | 05-06-2010 |
| 20100108328 | Method for Removing a Consumable Downhole Tool - A method for removing a downhole tool from a well bore comprises consuming at least a portion of the downhole tool within the well bore via exposure of the tool to heat and a source of oxygen. Another method of removing a downhole tool from a well bore comprises exposing the downhole tool to heat and a source of oxygen in situ within the well bore to desirably consume at least a portion of the tool within the well bore. | 05-06-2010 |
| 20100175889 | Detonator for Material-Dispensing Wellbore Tools - An apparatus for use in dispensing fluid into a wellbore includes a piston element releasably coupled to a housing and a detonator in the housing that applies a force sufficient to release the piston element from the housing when activated. The apparatus also has an intermediate section that mates with the upper section, an elongated member coupled to the piston and that is positioned in a bore of the intermediate section; and a lower section having a housing that mates with the intermediate section. The housing includes at least one opening providing communication between a bore of the housing and an exterior of the housing; and a movable barrier in the lower section. The movable barrier has a first position, wherein the barrier substantially blocks communication between the bore of the intermediate section and the at least one opening, and a second position, wherein the barrier does not substantially block communication between the bore of the intermediate section and the at least one opening. | 07-15-2010 |
| 20100252273 | Convertible downhole devices - A convertible downhole device comprises at least one sacrificial material to provide two or more configurations so that two or more different operations or functions are performable by the downhole device, one in which the sacrificial material is fully intact and another in which the sacrificial material is at least partially removed or disappeared. The sacrificial material may be removable through any suitable method or device, such as by contacting with a fluid, by temperature, by pressure, or by combustion, ignition, or activation of a fusible or energetic material, or crushing or breaking up of a frangible material. Upon removal of the sacrificial material, the downhole device has at least one additional configuration so that at least a second operation can be performed by the downhole device. | 10-07-2010 |
| 20100270031 | DOWNHOLE DISSOLVABLE PLUG - In one or more embodiments, a downhole plug is disclosed. The downhole plug can include a housing having an aperture disposed generally through the center of the housing, a stopper having a composition of at least two different materials, one or more covers at least partially disposed on the stopper, wherein the stopper is at least partially encapsulated by the one or more covers, and wherein the stopper is disposed in the aperture and adapted to block fluid flow therethrough, and a flow control device disposed adjacent the stopper to selectively introduce fluid to at least a portion of the stopper. In one or more embodiments, a method is disclosed for operating a wellbore using a downhole plug. | 10-28-2010 |
| 20100294510 | DISSOLVABLE DOWNHOLE TOOL, METHOD OF MAKING AND USING - Disclosed herein is a dissolvable downhole tool. The tool includes, a dissolvable body constructed of at least two materials and at least one of the at least two materials is a reactive material, and a first material of the at least two materials being configured to substantially dissolve the dissolvable body and a second material configured to control reaction timing of the first material. | 11-25-2010 |
| 20100314127 | Consumable downhole tools - A downhole tool having a body or structural component comprises a material that is at least partially consumed when exposed to heat and a source of oxygen. The material may comprise a metal, such as magnesium, which is converted to magnesium oxide when exposed to heat and a source of oxygen. The downhole tool may further comprise a torch with a fuel load that produces the heat and source of oxygen when burned. The fuel load may comprise a flammable, nonexplosive solid, such as thermite. | 12-16-2010 |
| 20110005773 | Self healing filter-cake removal system for open hole completions - A method of treating a subterranean formation including providing a well bore that includes a filter cake on at least a portion of the well bore and contacting at least a portion of the filter cake with a filter cake degradation fluid comprising a relative permeability modifier. The method also includes allowing the relative permeability modifier to retain at least a portion of the filter cake degradation fluid in the well bore for a time sufficient to contact the filtercake and allowing the filter cake to degrade. | 01-13-2011 |
| 20110017471 | DOWNHOLE VALVE ASSEMBLY - Downhole tools and methods for isolating a wellbore. A downhole tool can include a body having a bore or flowpath formed therethrough, and one or more sealing members disposed therein. The one or more sealing members can include an annular base and a curved surface having an upper face and a lower face, wherein one or more first radii define the upper face, and one or more second radii define the lower face, and wherein, at any point on the curved surface, the first radius is greater than the second radius. The sealing members can be disposed within the bore of the tool using one or more annular sealing devices disposed about the one or more sealing members. | 01-27-2011 |
| 20110132619 | Dissolvable Tool and Method - A method of dissolving a tool includes, exposing an outer surface of the tool to an environment reactive with the tool, reacting the tool with the environment, applying stress to the tool, concentrating stress on the tool at stress risers in the outer surface, and initiating fracturing the tool at the stress risers. | 06-09-2011 |
| 20110132620 | Dissolvable Tool and Method - A method of dissolving a tool includes, positioning the tool within an environment reactive with at least a portion of the tool, introducing the environment below a surface of the tool through at least one perforation formed therein, reacting at least a portion of the tool exposed to the environment through the at least one perforation, weakening the tool to mechanical stress, and fracturing the tool. | 06-09-2011 |
| 20110132621 | Multi-Component Disappearing Tripping Ball and Method for Making the Same - A tripping ball including two or more relatively dissolution resistant parts of a ball and an adherent dissolvable material binding the two or more parts of the ball together and method for making a tripping ball as described. | 06-09-2011 |
| 20110232918 | Method and apparatus to remove shifting balls from frac sleeves in oil and gas wells - A process to drill through a spherical frac shifting ball in an oil well utilizes an improved mill, rotates drill pipe at one hundred to five hundred rpm, circulates drilling fluid such that the velocity of said fluid upwardly over said exterior of the drill pipe is in the range of three hundred to four hundred and seventy five feet per minute, and applies one thousand to three thousand pounds of slack off weight. | 09-29-2011 |
| 20110284242 | Isolation tool - A down hole pressure isolation tool is placed in a pipe string and includes a pair of pressure discs having one side that is highly resistant to applied pressure and one side that ruptures when much lower pressures are applied to it. The weak sides of the pressure discs face each other. Rather than rupturing the discs by dropping a go-devil into the well, a first of the discs is ruptured or broken by the application of fluid pressure from the well head or surface. Formation pressure is then used, in different ways according to the different embodiments, to rupture the remaining disc. | 11-24-2011 |
| 20110284243 | Isolation tool actuated by gas generation - A down hole pressure isolation tool is placed in a pipe string and includes a pair of pressure discs having one side that is highly resistant to applied pressure and one side that ruptures when much lower pressures are applied to it. The weak sides of the pressure discs face each other. Rather than rupturing the discs by dropping a go-devil into the well, in some embodiments, a first of the discs is ruptured or broken by the application of fluid pressure from the well head or surface. Formation pressure is then used, in different ways according to the different embodiments, to rupture the remaining disc. In another embodiment, a gas generating assembly located between the discs is actuated to produce enough pressure to rupture the discs. | 11-24-2011 |
| 20110308813 | TUBING SHOE - A tubing shoe is disclosed with a body adapted to be connected to a section of tubing to be emplaced in a wellbore and a nose provided on the body, wherein the nose includes a failure guide structure for controlling break-up of the nose upon being drilled out from inside the nose. The failure guide structure typically controls break up by limiting the maximum size of pieces of the nose broken off upon drill out, for example, by defining weakened areas of the nose which are prone to failure upon drilling. The failure guide structure can include discontinuities such as slots or bores formed or drilled into the outer surface of the nose. The failure guide structure controls the break up of the nose in a consistent and predictable manner, and typically at a predictable stage during the drill-out process. | 12-22-2011 |
| 20110315398 | PLUG DEVICE AND METHOD OF USING SAME - A plug device and a method of using same is described for use when temporarily sealing a fluid bore in a pipe. The plug device includes a plug body disposed in a sealing manner in the fluid bore, wherein the plug device, in order to disintegrate the plug body, further comprises a piston arrangement structured in a manner allowing it to provide a pressure increase in an activation fluid having been introduced to the plug body via at least one channel. | 12-29-2011 |
| 20120031626 | Consumable Downhole Tools - A method of removing a downhole tool from a wellbore comprising contacting the tool with a heat source wherein the tool comprises at least one load-bearing component comprising a thermally degradable material. A method of reducing the structural integrity of a downhole tool comprising fabricating the load-bearing components of the tool from a thermally degradable material. A method of removing a downhole tool comprising mechanically milling and/or drilling the tool from a wellbore wherein the tool comprises at least one load bearing component comprising a phenolic resin wherein the phenolic resin comprises a rosole, a novalac or combinations thereof. | 02-09-2012 |
| 20120043093 | APPARATUS AND METHOD - A circulating sub apparatus comprising: a substantially tubular outer body member having a throughbore formed therein; a substantially tubular inner body member; wherein both the inner and outer bodies normally have holes formed therein; and a displacement mechanism for producing movement of the inner body member relative to the outer body member between: an open configuration, in which the hole(s) on the outer body member are open such that fluid is passable between a throughbore and the outside of the circulating sub apparatus via the one or more holes; and, an obturated configuration, in which the hole(s) on the outer body member are obturated; wherein the inner body member comprises a seat member adapted to catch a dropped object, and wherein the seat member is adapted to permit at least a proportion of fluid to flow past the dropped object when it is seated thereon. Normally the seat member is located upstream of the hole(s) of the outer body member in both the open and obturated configurations. In exemplary form the apparatus uses a drop object which can erode over time. When the object is dropped it causes the displacement mechanism to move to a different position and so switch between open and obturated positions. In exemplary form a mechanism, such as a cammed sleeve, is provided to allow the displacement mechanism to be moved back and forth between open and closed positions. Embodiments benefit in that they can be moved back and forth between such positions rather limited to a one-off change using a dropped ball. | 02-23-2012 |
| 20120061096 | DOWN HOLE EQUIPMENT REMOVAL SYSTEM - The present invention provides a practical method capable of substantially removing downhole equipment by dissolving it with a chemical. The method comprises introducing an equipment dissolution mixture comprising one or more chemicals and/or materials suitable for the substantial dissolution of the downhole equipment. | 03-15-2012 |
| 20120067596 | RETRIEVABLE BRIDGE PLUG - A method and apparatus for a bridge plug for isolating portions of a downhole casing is provided comprising a retrievable upper mandrel assembly and a lower mandrel assembly coupled to the upper mandrel assembly, wherein the lower mandrel assembly comprises a drillable material. | 03-22-2012 |
| 20120103629 | SHEAR BOOST TRIGGERING AND BOTTLE REDUCING SYSTEM AND METHOD - Systems can be configured to move a ram block in a blowout preventer. The system includes: a first bank of accumulators configured to provide a first pressure to move the ram block; a second bank of accumulators configured to provide a second pressure to move the ram block, wherein the second pressure is greater than the first pressure; and a controller configured to sequentially control the first bank of accumulators to apply pressure to move the ram block and to then control the second bank of accumulators to move the ram block after the first bank of accumulators has moved the ram block a first distance. | 05-03-2012 |
| 20120118583 | PLUG AND METHOD OF UNPLUGGING A SEAT - A method of unplugging a seat, including dissolving at least a surface of a plug seated against the seat, and unseating the plug from the seat. | 05-17-2012 |
| 20120125630 | RETRIEVABLE SWELLABLE PACKER - A well tool can include a swellable material, and a degradable material which supports the swellable material, but which degrades in response to contact with a selected fluid in a well. A packer for use in a subterranean well can include a swellable material, and a degradable material which supports the swellable material. A method of unsetting a packer in a subterranean well can include the steps of, after the packer has been set in the well, exposing a degradable material of the packer to a selected fluid, thereby degrading the degradable material, and a seal element of the packer being unsupported by the degradable material in response to the exposing step. | 05-24-2012 |
| 20120125631 | Systems and Methods of Diverting Fluids In A Wellbore Using Destructible Plugs - A bridge plug arrangement includes a plug having an upper end and a bottom end. The bridge plug arrangement also optionally includes a cylindrical seat. The bridge plug arrangement further includes a tubular member. The tubular member may be part of a casing string. The tubular member is configured to receive the plug and, when used, the seat. The plug and/or the seat may be fabricated from a frangible material. A method for diverting fluids in a wellbore using the bridge plug arrangement is also provided. The method may include landing the plug onto the seat within the wellbore below a subsurface zone of interest. Treatment fluids are then injected into the wellbore, where they are diverted through perforations and into a formation. The plug and/or seat is then optionally broken into a plurality of pieces through use of a downward mechanical force. | 05-24-2012 |
| 20120273229 | METHOD OF MAKING AND USING A FUNCTIONALLY GRADIENT COMPOSITE TOOL - A method of making a composite downhole article is disclosed. The method include forming at least one corrodible core member comprising a first material that is corrodible in a wellbore fluid at a first corrosion rate; and disposing at least one outer member on the core member, the outer member comprising a second material that is corrodible in the wellbore fluid at a second corrosion rate, wherein the corrodible core member has a composition gradient or a density gradient, or a combination thereof, and wherein the first corrosion rate is substantially greater than the second corrosion rate. A method of using a composite downhole article is also disclosed. The method includes forming a composite downhole article as described above; using the article to perform a first wellbore operation; exposing the article to the wellbore fluid; and selectively corroding the second corrodible member. | 11-01-2012 |
| 20130032357 | METHOD OF CONTROLLING CORROSION RATE IN DOWNHOLE ARTICLE, AND DOWNHOLE ARTICLE HAVING CONTROLLED CORROSION RATE - A method of removing a downhole assembly comprises contacting, in the presence of an electrolyte, a first article comprising a first material and acting as an anode, and a second article comprising a second material having a lower reactivity than the first material and acting as a cathode, the downhole assembly comprising the first article in electrical contact with the second article, wherein at least a portion of the first article is corroded in the electrolyte. | 02-07-2013 |
| 20130037274 | Electrolytic Composition for Degrading Polymeric Filter Cake - An aqueous breaking fluid having an aqueous fluid, powder particles, and at least one reducing sugar may be helpful in degrading a polymeric filter cake downhole. The aqueous breaking fluid may be introduced through a wellbore. The aqueous fluid may be or include water, brine, acid, alcohol, a mutual solvent, and mixtures thereof. A coating material of each metallic powder particle may be disintegrated such that the particle core may be released from the powder particle. The aqueous breaking fluid, which may include the reducing sugar and the released particle core, may contact and degrade the polymeric filter cake. | 02-14-2013 |
| 20130048305 | DEGRADABLE SLIP ELEMENT - A slip element, including a substrate at least partially formed from a material degradable upon exposure to a fluid; and an outer surface disposed on the substrate. A method of removing a slip element including exposing a substrate of the slip element to a downhole fluid for degrading the substrate. | 02-28-2013 |
| 20130048306 | APPARATUS AND METHOD FOR PENETRATING CEMENT SURROUNDING A TUBULAR - Apparatus and method for penetrating cement ( | 02-28-2013 |
| 20130062072 | System and Method for Stimulating a Multi-Zone Well - A system for stimulating a multi-zone well includes a tubular body apportioned into at least a first zone and a second zone. The system has a first set of plugs placed in pre-drilled holes along the tubular body within the first zone. The plugs in the first set of plugs are fabricated to substantially dissolve upon contact with an acidic stimulation fluid within a first selected time. The system also has a second set of plugs placed in pre-drilled holes along the tubular body within the second zone. The plugs in the second set of plugs are fabricated to substantially dissolve upon contact with the acidic fluid within a second selected time that is greater than the first selected time. | 03-14-2013 |
| 20130081825 | Apparatus and Methods Utilizing Nonexplosive Energetic Materials for Downhole Applications - In one aspect, a method of method of performing a wellbore operation is disclosed that in one embodiment may include: providing a device that includes a non-explosive energetic material configured to disintegrate when subjected to a selected energy; placing the device at a selected location in the wellbore to perform a selected function; and subjecting the device to the selected energy to disintegrate the device in the wellbore after the device has performed the selected function. In another aspect an apparatus for use in a wellbore is disclosed that in one embodiment may include a device placed in the wellbore at a selected location, wherein the device includes a non-explosive energetic material configured to disintegrate when subjected to a selected energy, and a source of the selected energy configured to subject the device to the selected energy in the wellbore to disintegrate the device. | 04-04-2013 |
| 20130081826 | IN-SITU GENERATED BUFFER SYSTEM - An aqueous buffered treatment solution for removing mud cake from a well bore treatment site is made by inducing an elevated temperature in an aqueous pre-buffer solution. The aqueous pre-buffer solution is made of an acid precursor that hydrolyzes into a treatment acid, a conjugate base salt that forms the conjugate base of the acid, and an aqueous fluid. Inducing the elevated temperature forms the treatment acid. The treatment acid is operable to remove mud cake.
| 04-04-2013 |
| 20130112429 | ENHANCED ELECTROLYTIC DEGRADATION OF CONTROLLED ELECTROLYTIC MATERIAL - A method for degrading a downhole article includes exposing the downhole article to a composition comprising a corrosive agent selected from a reducing sugar, ester, aminocarboxylic acid, or a combination thereof. The method also includes contacting the downhole article with the corrosive agent to degrade the downhole article. Additionally, a composition for degrading a downhole article includes water, salt, and a corrosive agent selected from a reducing sugar, ester, aminocarboxylic acid, or a combination thereof. | 05-09-2013 |
| 20130118759 | AGENTS FOR ENHANCED DEGRADATION OF CONTROLLED ELECTROLYTIC MATERIAL - A method for degrading a downhole article includes exposing the downhole article comprising a controlled electrolytic material to a composition that comprises a reducing agent. The method also includes contacting the downhole article with the reducing agent to degrade the downhole article. Additionally, a composition for degrading a downhole article includes water, chelant, metal ions, and a reducing agent that includes ascorbic acid, erythorbic acid, a derivative thereof, a salt thereof, or a combination thereof. | 05-16-2013 |
| 20130133897 | MATERIALS WITH ENVIRONMENTAL DEGRADABILITY, METHODS OF USE AND MAKING - A valve device for restricting flow is provided that includes a degradable portion. A method of temporarily blocking flow is also provided which includes a degradable portion of an oilfield element. | 05-30-2013 |
| 20130146302 | CONTROLLED ELECTROLYTIC DEGREDATION OF DOWNHOLE TOOLS - A downhole assembly with controlled degradation including a body having a cavity therein and is formed from a first material having a first electrode potential. An insert is disposed in the cavity, the insert electrically coupled to the body and formed from a second material having a second electrode potential, with the first electrode potential being more negative than the second electrode potential. | 06-13-2013 |
| 20130161024 | Downhole Fluid Flow Control System Having Temporary Sealing Substance and Method for Use Thereof - A downhole fluid flow control system ( | 06-27-2013 |
| 20130199798 | TEMPORARY PROTECTIVE COVER FOR OPERATIVE DEVICES - A system for providing temporary protection, including an operative device located at an external surface of a member. A cover is externally disposed with respect to the operative device for initially protecting the operative device. The cover is chemically reactive to a downhole fluid for removal of the protective cover. A method of temporarily protecting an operative device is also included. | 08-08-2013 |
| 20130206425 | Selectively Corrodible Downhole Article And Method Of Use - A selectively corrodible downhole article includes a movable cylindrical member comprising a first section and an axially separated second section, the first section comprising a first material having a first galvanic activity, the second section comprising a second material having a second galvanic activity, the first galvanic activity being greater than the second, the first section being electrically isolated from the second section; and a fixed member disposed on the cylindrical member and configured for electrical contact with the first or second section, the fixed member comprising an intermediate material having an intermediate galvanic activity, the intermediate galvanic activity being intermediate the first and second galvanic activity, the movable cylindrical member configured for movement from a first position where the first section is disposed and in electrical contact with the fixed member and a second position where the second section is disposed and in electrical contact with the fixed member. | 08-15-2013 |
| 20130299185 | DISINTEGRABLE METAL CONE, PROCESS OF MAKING, AND USE OF THE SAME - A frustoconical member includes a metal composite that has a cellular nanomatrix comprising a metallic nanomatrix material; a metal matrix disposed in the cellular nanomatrix; and a first frustoconical portion. A process of making the frustoconical member includes combining a metal matrix powder, a disintegration agent, and metal nanomatrix material to form a composition; compacting the composition to form a compacted composition; sintering the compacted composition; and pressing the sintered composition to form the frustoconical member having a tapered portion on an outer surface of the frustoconical member. The frustoconical member can be used by contacting a frustoconical portion of the frustoconical member to a tapered surface of an article; applying pressure to the frustoconical member; urging the frustoconical member in a direction relative to the article to expand a radial dimension of the article; and contacting the frustoconical member with a fluid to disintegrate the frustoconical member. | 11-14-2013 |
| 20130319682 | WELL COMPLETION USING A PUMPABLE SEAT ASSEMBLY - A process and an apparatus for use in fluid fracturing of a well and the like is provided, the apparatus being a pumpable seat assembly for temporarily sealing a well casing comprising a generally cylindrical tube having an outer diameter and an inner diameter; a upper slip assembly and a lower slip assembly mounted on such cylindrical tube and adapted to selectively engage the well casing to anchor the pumpable seat assembly; an elastomeric packing element mounted on said cylindrical tube between the upper slip assembly and the lower slip assembly; and a dissolvable member positioned within the generally cylindrical tube for temporarily restricting a flow of fluids to the portion of the wellbore located below the pumpable seat assembly. | 12-05-2013 |
| 20130327540 | METHODS OF REMOVING A WELLBORE ISOLATION DEVICE USING GALVANIC CORROSION - A wellbore isolation device comprises: at least a first material, wherein the first material: (A) is a metal or a metal alloy; and (B) is capable of at least partially dissolving when an electrically conductive path exists between the first material and a second material and at least a portion of the first and second materials are in contact with an electrolyte, wherein the second material: (i) is a metal or metal alloy; and (ii) has a greater anodic index than the first material. A method of removing the wellbore isolation device comprises: contacting or allowing the wellbore isolation device to come in contact with an electrolyte; and allowing at least a portion of the first material to dissolve. | 12-12-2013 |
| 20130333899 | DISINTEGRABLE CENTRALIZER - A system including a first component, a second component disposed radially adjacent to the first component, and a centralizer disposed between the first component and the second component for at least partially filling a radial clearance between the first component and the second component. The centralizer is formed at least partially from a disintegrable material responsive to a selected fluid. A method of completing a borehole is also included. | 12-19-2013 |
| 20140027127 | DOWNHOLE TOOLS HAVING NON-TOXIC DEGRADABLE ELEMENTS - Downhole tools for use in oil and gas production which degrade into non-toxic materials, a method of making them and methods of using them. A frac ball and a bridge plug comprised of polyglycolic acid which can be used in fracking a well and then left in the well bore to predictably, quickly, and safely disintegrate into environmentally friendly products without needing to be milled out or retrieved. | 01-30-2014 |
| 20140027128 | DOWNHOLD FLOW INHIBITION TOOL AND METHOD OF UNPLUGGING A SEAT - A downhole flow inhibition tool includes at least a first component and a mating component at least a portion of one of the first component and the mating component is dissolvable in a target environment to reduce flow inhibition upon dissolution of the at least a portion. | 01-30-2014 |
| 20140034331 | Fluid Mixture for Softening a Downhole Device - A downhole device, having at least a portion polyurethane therein, may be softened by contacting the downhole device with a fluid mixture. The fluid mixture may have at least two components that may be or include, but are not limited to ethylene glycol monobutyl ether (EGMBE), propylene carbonate (PC), methanol, ethylene carbonate, dimethyl ether, diethyl ether, and combinations thereof. Upon contact with the fluid mixture, the downhole device may become softened for subsequent removal and/or retrieval of the downhole device. | 02-06-2014 |
| 20140083716 | Isolation tool - A down hole pressure isolation tool is placed in a pipe string and includes a pair of pressure discs having one side that is highly resistant to applied pressure and one side that ruptures when much lower pressures are applied to it. The weak sides of the pressure discs face each other. Rather than rupturing the discs by dropping a go-devil into the well, a first of the discs is ruptured or broken by the application of fluid pressure from the well head or surface. Formation pressure is then used, in different ways according to the different embodiments, to rupture the remaining disc. | 03-27-2014 |
| 20140083717 | HIGH-MOLECULAR-WEIGHT POLYGLYCOLIDES FOR HYDROCARBON RECOVERY - A tool having a high-molecular weight Polyglycolides such as polyglycolic acid (PGA) may be used in downhole hydrocarbon recovery applications. Advantageously, PGA tools do not need to be drilled out but will naturally break down into environmentally-compatible natural compounds. | 03-27-2014 |
| 20140124214 | DISSOLVABLE TOOL AND METHOD OF DISSOLVING SAME - A dissolvable tool includes a body having at least a portion configured to dissolve in a fluid, and a barrier connected to the body. The barrier is configured to slidably fluidically seal to a structure that the body and the barrier are movable within to maintain a volume of the fluid between the barrier and the body while the barrier and the body are moved through the structure. | 05-08-2014 |
| 20140124215 | Convertible Downhole Devices - A convertible downhole device comprises at least one sacrificial material to provide two or more configurations so that two or more different operations or functions are performable by the downhole device, one in which the sacrificial material is fully intact and another in which the sacrificial material is at least partially removed or disappeared. The sacrificial material may be removable through any suitable method or device, such as by contacting with a fluid, by temperature, by pressure, or by combustion, ignition, or activation of a fusible or energetic material, or crushing or breaking up of a frangible material. Upon removal of the sacrificial material, the downhole device has at least one additional configuration so that at least a second operation can be performed by the downhole device. | 05-08-2014 |
| 20140124216 | ISOLATION DEVICE CONTAINING A DISSOLVABLE ANODE AND ELECTROLYTIC COMPOUND - A wellbore isolation device comprising: a first material, wherein the first material: (A) is a metal or a metal alloy; and (B) partially dissolves when an electrically conductive path exists between the first material and a second material and at least a portion of the first and second materials are in contact with an electrolyte; and an electrolytic compound, wherein the electrolytic compound dissolves in a fluid located within the wellbore to form free ions that are electrically conductive. A method of removing the wellbore isolation device comprises: placing the wellbore isolation device into the wellbore; and allowing at least a portion of the first material to dissolve. | 05-08-2014 |
| 20140131050 | METHOD OF MAKING AND USING A FUNCTIONALLY GRADIENT COMPOSITE TOOL - A method of making a composite downhole article is disclosed. The method include forming at least one removable core member comprising a first metallic material that is removable in a wellbore fluid at a first removal rate; and disposing at least one outer member on the core member, the outer member comprising a second material that is removable in the wellbore fluid at a second removal rate, wherein the removable core member has a composition gradient or a density gradient, or a combination thereof, and wherein the first removal rate is substantially greater than the second removal rate. A method of using a composite downhole article is also disclosed. The method includes forming a composite downhole article as described above; using the article to perform a first wellbore operation; exposing the article to the wellbore fluid; and selectively removing the second removable member. | 05-15-2014 |
| 20140166305 | MILLING CUTTER HAVING UNDULATING CHIP BREAKER - A cutting element includes a front face and leading face extending between a first and second sides. A leading cutting edge is located at an intersection of the front face and the leading face, and an undulating back-up cutting edge is formed in the front face and extends from the first side to the second side, and defines a leading surface and a trailing surface. A method includes cutting with a tool having a blade coupled to a tool body, and a cutting element coupled to a forward surface of the blade. The cutting element has a leading cutting edge formed at an intersection of front and leading faces, and an undulating back-up cutting edge formed in the front face and defining leading and trailing surfaces. The leading cutting edge of the cutting element contacts and cuts a work piece. | 06-19-2014 |
| 20140174757 | ELECTRONIC RUPTURE DISCS FOR INTERVENTIONALESS BARRIER PLUG - Methods and apparatus are presented for removing a degradable barrier plug positioned in a downhole axial passageway. The degradable plug is initially isolated from fluid by at least one solid, non-degradable cover. A first electronic rupture disc assembly is actuated to open a passageway to the degradable plug. A second electronic rupture disc assembly is actuated to allow a fluid, such as water from a supply chamber, to flow into contact with the plug. The plug is substantially degraded, although the cover remains. A third electronic rupture disc assembly is actuated to bend and then cover the remaining solid cover, thereby opening the axial passageway and protecting later-introduced tools. | 06-26-2014 |
| 20140190705 | METHODS OF REMOVING A WELLBORE ISOLATION DEVICE USING GALVANIC CORROSSION OF A METAL ALLOY IN SOLID SOLUTION - At least a portion of a wellbore isolation device consists essentially of: a metal alloy, wherein the metal alloy: (A) comprises magnesium at a concentration of at least 50% by volume of the metal alloy; and (B) at least partially dissolves in the presence of an electrolyte. A method of removing the wellbore isolation device comprises: contacting or allowing the wellbore isolation device to come in contact with an electrolyte; and allowing at least a portion of the metal alloy to dissolve. | 07-10-2014 |
| 20140202708 | DOWNHOLE COMPONENT HAVING DISSOLVABLE COMPONENTS - An apparatus that is usable with a well includes a first component and a second component. The first component is adapted to dissolve at a first rate, and the second component is adapted to contact the first component to perform a downhole operation and dissolve at a second rate that is different from the first rate. | 07-24-2014 |
| 20140202709 | Method of Completing a Well Using a Friction Reducing Completion Fluid - A method for reducing the friction forces between tubulars, for example coiled tubing in casing, is disclosed. The method includes mixing a selected suspending agent and surfactant and polymer particles in oil, then adding the mixture to water and pumping the mixture down the tubing. The mixture is particularly useful in coiled tubular drilling inside casing of an oil or gas well. The formulation has also been found to reduce corrosion on metal surfaces. | 07-24-2014 |
| 20140216756 | CASING FLOAT TOOL - A rupture disc assembly and a float tool incorporating the rupture disc assembly is disclosed. The rupture disc assembly may include a rupture disc assembly comprising a rupture disc, an upper tubular portion and a lower tubular portion, and a securing mechanism for holding the rupture disc between the upper and lower tubular portions. A float tool for creating a buoyant chamber in a casing string may include the rupture disc assembly and a sealing device for sealing the lower end of the casing string, the buoyant, sealed chamber may be created there between. In operation, applied fluid pressure causes the rupture disc to move downward. The rupture disc may be shattered by contact with a surface on the lower tubular portion. Full casing internal diameter may be restored in the region where the rupture disc formerly sealed the casing. | 08-07-2014 |
| 20140262327 | FERROUS DISINTEGRABLE POWDER COMPACT, METHOD OF MAKING AND ARTICLE OF SAME - A disintegrable powder compact includes a matrix; a plurality of dispersed particles including a particle core material dispersed in the matrix; a ferrous alloy including carbon disposed in one of the matrix or particle core material; and a secondary element disposed in the other of the matrix or particle core material, the matrix and the plurality of dispersed particles having different standard electrode potentials. A process for preparing a disintegrable powder compact includes combining a primary particle including a ferrous alloy that includes carbon and a secondary particle to form a composition; compacting the composition to form a preform; and sintering the preform by forming a matrix, wherein the dispersed particles are dispersed in the matrix, the disintegrable powder compact is configured to disintegrate in response to contact with a disintegration fluid, and the primary particle and secondary particle have different standard electrode potentials. | 09-18-2014 |
| 20140262328 | Apparatus and methods for overcoming an obstruction in a wellbore - Apparatus and methods for penetrating a downhole target within a wellbore include providing a body with a longitudinal axis, a first end, and a second end into a wellbore, the body having a nozzle at the first end. The nozzle is adapted to project a medium, such as molten thermite, in a direction generally parallel to the longitudinal axis, such as in a downhole direction. An initiation source is usable to consume a fuel load associated with the body to cause projection of the medium in a direction generally parallel to the axis of the wellbore, to affect an obstruction in the wellbore. A series of such apparatus can be used in succession, such that the actuation of each preceding apparatus enhances the effect of each subsequent apparatus on the obstruction. | 09-18-2014 |
| 20140284063 | ISOLATION DEVICES HAVING A NANOLAMINATE OF ANODE AND CATHODE - A wellbore isolation device comprising: a nanolaminate, wherein the nanolaminate comprises two or more layers of a first material and two or more layers of a second material, wherein the first material and the second material form a galvanic couple, and wherein the first material is the anode and the second material is the cathode of the galvanic couple. A method of removing the wellbore isolation device comprises: contacting or allowing the wellbore isolation device to come in contact with an electrolyte; and causing or allowing at least a portion of the two or more layers of the first material to dissolve. | 09-25-2014 |
| 20140311752 | DOWNHOLE PLUG APPARATUS - The present invention relates to downhole tools and methods of removing such tools from wellbores. More particularly, the present invention relates to downhole tools designed to be comprised of dissolvable materials or frangible materials and methods for dissolving or fragmenting such downhole tools in situ. | 10-23-2014 |
| 20140318808 | Fracturing Multiple Zones with Inflatables - One or more inflatables are used to initiate fractures in a formation. The onset of fractures after inflation to a predetermined pressure also results in damage to the inflatable and the ability to follow up the stress that initiated the fracture with high flow at high pressure to further propagate the initiated fractures at a location close to their origin. In another variation the inflatable can have openings that are small enough to allow inflation to initiate the fractures and yet continue to allow fluid flow through the openings to propagate the fractures. In yet another variation sliding sleeves with ball seats can be sequentially operated to inflate to fracture followed by opening an adjacent port to propagate. | 10-30-2014 |
| 20140332233 | METHOD OF REMOVING A DISSOLVABLE WELLBORE ISOLATION DEVICE - A wellbore isolation device comprises: a first layer, wherein the first layer: (A) comprises a first material; and (B) defines a cavity containing a dissolution medium, wherein a chemical reaction of at least the dissolution medium causes at least a portion of the first material to dissolve. A method of removing the wellbore isolation device comprises: introducing the wellbore isolation device containing the dissolution medium into the wellbore; and allowing the chemical reaction to occur. | 11-13-2014 |
| 20140338923 | ELECTRONIC RUPTURE DISCS FOR INTERVENTIONLESS BARRIER PLUG - Methods and apparatus are presented for removing a degradable barrier plug positioned in a downhole axial passageway. The degradable plug is initially isolated from fluid by at least one solid, non-degradable cover. A first electronic rupture disc assembly is actuated to open a passageway to the degradable plug. A second electronic rupture disc assembly is actuated to allow a fluid, such as water from a supply chamber, to flow into contact with the plug. The plug is substantially degraded, although the cover remains. A third electronic rupture disc assembly is actuated to bend and then cover the remaining solid cover, thereby opening the axial passageway and protecting later-introduced tools. | 11-20-2014 |
| 20140367117 | AGENTS FOR ENHANCED DEGRADATION OF CONTROLLED ELECTROLYTIC MATERIAL - A method for degrading a downhole article includes exposing the downhole article comprising a controlled electrolytic material to a composition that comprises a reducing agent. The method also includes contacting the downhole article with the reducing agent to degrade the downhole article. Additionally, a composition for degrading a downhole article includes water, chelant, metal ions, and a reducing agent that includes ascorbic acid, erythorbic acid, a derivative thereof, a salt thereof, or a combination thereof. | 12-18-2014 |
| 20140374121 | Downhole Entry Guide Having Disappearing Profile and Methods of Using Same - Entry guides for use on a tubing string comprise one or more dissolvable materials. A profile disposed on the entry guide facilitates aligning the tubing string in a desired orientation within a wellbore. For example, the profile can align the tubing string with a bore of a component disposed within the wellbore so that the tubing string can be inserted into a bore of the downhole component. After proper alignment has been achieved, the one or more dissolvable materials can be activated to disappear leaving behind the tubing string and the downhole component in their desired arrangement. One or more portion of the entry guides, including the profile, can be formed out of the dissolvable material. | 12-25-2014 |
| 20150021042 | DRILLABLE PLUG - A drillable plug includes a mandrel having an upper end and a lower axial section, the lower axial section having a geometry transition point separating an upper circular mandrel profile from a lower non-circular mandrel profile, a seal element disposed around the upper circular mandrel profile, and a lower cone having an inner surface forming a passage, the lower cone disposed around the lower non-circular mandrel profile whereby the lower cone is rotationally locked with the mandrel and a lower slip assembly moveably disposed on a sloped outer surface of the lower cone. | 01-22-2015 |
| 20150053422 | HYBRID ROTARY CONE DRILL BIT - A hybrid rotary cone drill bit includes a plurality of legs. A bearing shaft extends from each leg, and a rotary cone is rotationally coupled to each bearing shaft. At least one rotary cone includes a nose row of cutting structures, an inner row of cutting structures, and a gage row of cutting structures. The nose row and the inner row of cutting structures are formed of milled teeth. The gage row of cutting structures is formed of cutter inserts. | 02-26-2015 |
| 20150060085 | PLUG RECEPTION ASSEMBLY AND METHOD OF REDUCING RESTRICTION IN A BOREHOLE - A method of reducing restriction in a borehole that is configured for a multizone fracturing operation wherein the borehole has a plurality of plug reception assemblies and each of the plurality of plug reception assemblies includes at least one component configured to disintegrate upon exposure to a selected condition. The method includes exposing the at least one component to a disintegrating environment and facilitating restriction reduction. | 03-05-2015 |
| 20150083436 | METHOD FOR INSTALLING AND OPERATING A CABLE HEAD WITH CABLE SHEAR MECHANISM FOR WIRELINE CABLE SUPPORTING OILFIELD EQUIPMENT IN A WELLBORE - A method for installing and operating a cable head with cable shear mechanism for wireline cable supporting oilfield equipment in a wellbore. The cable head has a housing, a cable bore, a tapered sleeve, a sliding bell, a drive pinch cylinder, a linear biasing mechanism positioned between the tapered sleeve and the drive pinch cylinder, a plurality of shear pins disposed partially into the housing and though the drive pinch cylinder, wherein each shear pin is adapted to withstand from 100 pounds to 2000 pounds of shear load, a pair of slidable cutting segments, and a pair of slidable cutting segment guides. When cable load exceeds a preset limit, the shear pins shear allowing the slidable cutting segments to be moved up the slidable cutting segment guides to impact and shear the cable. | 03-26-2015 |
| 20150101825 | SEGMENTED SEAT ASSEMBLY - An apparatus that is usable with a well includes a first portion and a second portion. The first portion includes a first plurality of segments, and the second portion includes a second plurality of segments. The apparatus is deployable in a tubing string that is installed in the well, and the second plurality of segments is adapted to engage the tubing string and exert a force on the first plurality of segments. The first plurality of segments is adapted to expand to form a seat in the tubing string to receive an untethered object in response to the force, and the second plurality of segments is adapted to be released from the first plurality of segments downhole in the well. | 04-16-2015 |
| 20150300120 | SEGMENTED SEAT FOR WELLBORE SERVICING SYSTEM - A segmented seat adapted to be placed in subterranean wellbore equipment and engaged by an obturator. The segmented seat includes an annular body that is radially divided into a plurality of separate segments, the annular body defining a central bore extending axially therethrough, a generally cylindrical outer wall, and an end wall; an annular seat formed on the end wall and extending about the central bore of the annular body, the annular seat being of a size and shape to engage the obturator; at least one recess formed into each of the segments and offset from the outer wall of the annular body so that at least a portion of the annular body is located radially between the outer wall and the recess; and a non-metallic material disposed within the recess and joining adjacent segments together. In an exemplary embodiment,? | 10-22-2015 |
| 20150337618 | Disintegrating Plug for Subterranean Treatment Use - A disintegrating plug uses a setting tool to push a swage into the plug body that has external ribs that contact the wall of the surrounding tubular. The ribs retain the body to the surrounding tubular wall with frictional contact. Some leakage may ensue but in fracturing some leakage does not matter if enough volume under the right pressure reaches the formation. The sheared member during the setting comes out with the mandrel that is part of the setting tool. In an alternative embodiment one or more o-rings are used to seal while anchoring is assisted by the hardened insert(s) that can be snap fitted in using rib flexing or that can be a c-ring that is expanded and snapped in. The o-ring(s) are axially spaced from the insert(s). | 11-26-2015 |
| 20150337619 | Partly Disintegrating Plug for Subterranean Treatment Use - A disintegrating plug uses a setting tool to push a swage into the plug body that has external ribs that contact the wall of the surrounding tubular. The ribs retain the body to the surrounding tubular wall with frictional contact. Some leakage may ensue but in fracturing some leakage does not matter if enough volume under the right pressure reaches the formation. The sheared member during the setting comes out with the mandrel that is part of the setting tool. In an alternative embodiment one or more o-rings are used to seal while anchoring is assisted by the hardened insert(s) that can be snap fitted in using rib flexing or that can be a c-ring that is expanded and snapped in. The o-ring(s) are axially spaced from the insert(s). | 11-26-2015 |
| 20150354305 | Rotatable Wireline Tool of Enhanced Hydraulic Drive Consistency - A rotatable downhole cutting tool configured for enhanced drive consistency in low power circumstances. The tool is equipped with a hydraulic axial drive actuator suitable for use in wireline deployment. The actuator itself includes a reciprocating piston with a ball screw that threadably interfaces a ball nut for dampening the axial drive imparted by the piston. As such, even though hydraulically driven at generally well under about 10 horsepower, bounce in the axial drive is substantially eliminated. This is particularly advantageous where cutting is to be applied to downhole metal based obstructions. | 12-10-2015 |
| 20150354310 | DISSOLVABLE DOWNHOLE PLUG - Herein disclosed is a downhole tool comprising a dissolvable part, wherein the part is dissolved in the presence of moisture or water, at a temperature in the range of 150° F. to 400° F. and at a pressure in the range of 2 ksi to 12 ksi. In some embodiments, no solvent other than water is needed for the dissolvable part to dissolve. The dissolvable part is made from a material comprising resin or fiber or both. In some embodiments, at least 20% of the dissolvable part is dissolved. Also disclosed herein is a method for performing a downhole operation comprising: placing a downhole tool within a well bore, wherein the downhole tool comprises a dissolvable part, wherein the part is dissolved in the presence of moisture or water, at a temperature in the range of 150° F. to 400° F. and at a pressure in the range of 2 ksi to 12 ksi. | 12-10-2015 |
| 20150369012 | Apparatus and Methodology for Continuous Down Hole Sand Screen Fill Removal - An apparatus for continuous removal of fill in a sand screen in a down hole environment is provided, as well as methods of using the apparatus in a continuous fashion such that accumulation of fill is prevented in a sand screen in a down hole environment. | 12-24-2015 |
| 20160009986 | ENHANCED ELECTROLYTIC DEGRADATION OF CONTROLLED ELECTROLYTIC MATERIAL | 01-14-2016 |
| 20160032671 | FERROUS DISINTEGRABLE POWDER COMPACT, METHOD OF MAKING AND ARTICLE OF SAME - A process for preparing a disintegrable powder compact, the process comprises: combining: a primary particle comprising a ferrous alloy which comprises carbon; and a secondary particle to form a composition; compacting the composition to form a preform; and sintering the preform to form the disintegrable powder compact by forming a matrix from one of the primary particle or the secondary particle; and forming a plurality of dispersed particles from the other of the primary particle or the secondary particle, wherein the dispersed particles are dispersed in the matrix, the disintegrable powder compact is configured to disintegrate in response to contact with a disintegration fluid, and the primary particle and secondary particle have different standard electrode potentials. | 02-04-2016 |
| 20160040495 | MILLING SYSTEM PROVIDING CUTTINGS RE-CIRCULATION - Milling systems, tools, and methods include using a mill with a barrier to promote re-circulation of debris and cuttings to the face of the mill. The face of the mill may include cutting elements. A barrier may obstruct the flow of cuttings and debris away from the face to re-circulate the cutting and debris to promote re-milling of the cuttings and debris by the cutting elements of the face of the mill. The barrier may include a hydraulic barrier formed by fluid expelled from nozzles in or above the mill. A secondary attrition system uphole of the mill may also be used to stage conditioning and re-sizing of cuttings and debris. After debris and cuttings pass through the barrier, the secondary attrition system may re-mill the cuttings and debris to a finer size before allowing the cuttings and debris to pass into the wellbore annulus for transport to the surface. | 02-11-2016 |
| 20160040496 | MILLING TOOLS WITH A SECONDARY ATTRITION SYSTEM - Milling systems, tools, and methods include using a mill with secondary attrition system to re-mill cuttings and other debris away from the face of the mill. The secondary attrition system may be located uphole of the mill may be used to stage conditioning and re-sizing of debris. After debris is generated by the mill, the secondary attrition system may re-mill the debris to a finer size before allowing the debris to pass out of the sleeve. The debris may be re-milled by secondary cutting elements while within an annular gap positioned radially between the sleeve and a drive shaft for the mill. The annular gap may have a variable width as a result of a tapered outer surface of the drive shaft and/or a tapered inner surface of the sleeve. The variable width may cause debris to be re-milled into increasingly finer sizes. | 02-11-2016 |
| 20160090804 | REDUCED FLOW MILLING - Methods and apparatus to reduce flow in front of the drill bit while milling improve milling debris size. Reducing flow on the drill bit face while milling allows the drill cuttings to remain at the drilling surface longer and reduce the size of the cuttings. The smaller cuttings increase the ease and speed of cutting removal. | 03-31-2016 |
| 20160108165 | RUBBER MEMBER FOR DOWNHOLE TOOLS, DOWNHOLE TOOL, AND METHOD FOR RECOVERING HYDROCARBON RESOURCE - A rubber member for downhole tools, preferably a seal member, ball sealer, ball seat, or protecting member, of which a decrease rate of 50% strain compressive stress after immersion for 24 hours in 150° C. water relative to 50% strain compressive stress before immersion is not less than 5%, and preferably not less than 50%; a downhole tool comprising the rubber member; and a method for recovering a hydrocarbon resource using the downhole tool. | 04-21-2016 |
| 20160108695 | A PLUG FOR WELL DRILLING PROCESS PROVIDED WITH MANDREL FORMED FROM DEGRADABLE MATERIAL - A plug for well drilling process comprising: (a) a mandrel formed from a degradable material; (b) a pair of rings placed on an outer peripheral surface existing in the orthogonal to an axial direction of the mandrel, at least one of the rings being formed from a degradable material; and (c) at least one diameter-expandable circular rubber member placed at a position between the pair of rings on the outer peripheral surface existing in the orthogonal to the axial direction of the mandrel; the percentage of mass loss in the degradable material after immersion for 72 hours in water at a temperature of 150° C. preferably being from 5 to 100%; and a well drilling method comprising the step of plugging well hole using the plug for well drilling process, wherein part or all of the plug for well drilling process degrades after the plugging. | 04-21-2016 |
| 20160130906 | DESTRUCTIBLE FRAC-BALL AND DEVICE AND METHOD FOR USE THEREWITH - A destructible frac-ball is provided that includes a body and a rupture mechanism, and a method for selectively initiating fluid flow within a casing segment is provided that utilizes one or more of the aforesaid frac-balls. The rupture mechanism is in communication with the body, and is operable to selectively initiate and break the body into the plurality of discrete pieces. | 05-12-2016 |
| 20160153241 | METHOD FOR DRILLING OUT A PLUG USING A HYBRID ROTARY CONE DRILL BIT | 06-02-2016 |
| 20160160611 | METHOD AND APPARATUS TO DELIVER A REAGENT TO A DOWNHOLE DEVICE - In one aspect, a downhole device for use in a downhole environment is disclosed, including: a first material with a first degradation rate in the downhole environment and at least one cavity, wherein the at least one cavity contains a second material to degrade the first material at a second degradation rate when the second material is exposed to the downhole environment and the first material, the second degradation rate being higher than the first degradation rate. In certain embodiments, the second material is a solid second material. In certain embodiments, the second material is a gel second material. In certain embodiments the downhole device further includes a protective material to control exposure of the second material to the downhole environment. | 06-09-2016 |
| 20160168924 | STABILIZER | 06-16-2016 |
| 20160177655 | DOWNHOLE TOOLS COMPRISING CAST DEGRADABLE SEALING ELEMENTS | 06-23-2016 |
| 20160201425 | DEGRADABLE WELLBORE ISOLATION DEVICES WITH VARYING FABRICATION METHODS | 07-14-2016 |
| 20160201429 | PRESSURE ACTUATED DISINTEGRATION OF BULK MATERIALS AND OILFIELD RELATED COMPONENTS | 07-14-2016 |
| 20160201435 | FRESH WATER DEGRADABLE DOWNHOLE TOOLS COMPRISING MAGNESIUM AND ALUMINUM ALLOYS | 07-14-2016 |
| 20160251912 | DOWNHOLE TOOL PROTECTION DURING WELLBORE CEMENTING | 09-01-2016 |
| 20160251930 | TECHNIQUE AND APPARATUS FOR USING AN UNTETHERED OBJECT TO FORM A SEAL IN A WELL | 09-01-2016 |
| 20160251934 | DEGRADABLE WELLBORE ISOLATION DEVICES WITH LARGE FLOW AREAS | 09-01-2016 |
| 20170234074 | Drill Bit for Milling Composite Plugs | 08-17-2017 |
| 20170234092 | HYBRID ROLLER CONE AND JUNK MILL BIT | 08-17-2017 |
| 20180023359 | PLUG RECEPTION ASSEMBLY AND METHOD OF REDUCING RESTRICTION IN A BOREHOLE | 01-25-2018 |
