Class / Patent application number | Description | Number of patent applications / Date published |
166192000 | Flow stopping type; e.g., plug | 67 |
20080245524 | Tubular running tool and method of using same - An automated tubular running tool for use in drilling systems and the like allows for the picking up, positioning, stabbing and threadedly connecting a tubular segment to a tubular string being held by the rig by a spider. The tool comprises a pivoting arm, which can pickup, position, stab and threadedly connect the tubular segment. The tool further features an integral elevator, which then lowers the piping string tubing string into the well bore. This tubular running tool allows for the connection of tubular segments to a tubular string without the need of personnel. | 10-09-2008 |
20090133868 | Aqueous Two-Phase Emulsion Gel Systems for Zone Isolation - A low viscosity wellbore polymer fluid gelling system comprising an aqueous medium and a water-in-water emulsion comprising a plurality of polymers or oligomers, including at least one removable polymer or oligomer, and at least one gelling polymer or oligomer, wherein said fluid has a low viscosity when injected, and the gelling polymer forms a gel downhole which has a storage modulus of at least about 60 Pa after the removable polymer is removed from the fluid. The invention also provides a method of isolating at least one zone of a subterranean formation penetrated by a wellbore, including the steps of preparing a water-in-water emulsion comprising a plurality of polymers or oligomers including at least one removable polymer or oligomer, and at least one gellable polymer or oligomer; combining the water-in-water emulsion with an aqueous medium to prepare a low viscosity polymer fluid; introducing the fluid into a zone in the formation, removing the at least one removable polymer or oligomer, and allowing a remaining gellable oligomer, polymer or polymers to form a gel, isolating the zone from at least one other zone in the formation. | 05-28-2009 |
20090159267 | Methods and Materials for Subterranean Fluid Forming Barriers in Materials Surrounding Wells - Disclosed is a method and material for forming a fluid barrier in the material surrounding a wellbore. The method involves temporarily opening a fracture extending from the wellbore and then depositing particulates in the fracture which will swell when exposed to the fluid. The particles are deposited in the fracture without causing appreciable swelling thereof and then, after the fracture closes, the particles are allowed to swell when contacted with the fluid to form a fluid barrier. | 06-25-2009 |
20100038075 | SEAL OR FLUID BARRIER USING STRANDS - The present invention provides for a seal or barrier comprising strands that are woven or wrapped in an overlapping manner such as, for example, helical or circumferential patterns. | 02-18-2010 |
20100126714 | Plug Device - A plug device for closing of a pipe bore where the plug comprises an exterior sleeve formed in a flexible material, and a setting mechanism, and where the setting mechanism comprises wedges which between their passive position and their active position are displaced along a curved path. | 05-27-2010 |
20100163222 | DEVICE FOR A TEST PLUG | 07-01-2010 |
20100252254 | Apparatus and Method with Hydrocarbon Swellable and Water Swellable Body - A swellable apparatus for filling a space in oil or gas tool such as a wellbore packer is described. The swellable apparatus comprise a hydrocarbon swellable body which swells on exposure to a hydrocarbon fluid, and at least one water swellable body which swells on exposure to a second fluid comprising water. The hydrocarbon swellable body is interposed between the aqueous fluid and the water swellable body and comprises at least one access pathway configured to permit the passage of water to the water swellable body. The pathway may be formed by perforation, or by incorporating an additive into the hydrocarbon material, such as a foaming agent or polyoctenamer. Embodiments of the invention comprise variations in cross-linking in the hydrocarbon swellable body. | 10-07-2010 |
20110277988 | PLUG - A plug for installation in a well is described, which comprises a housing ( | 11-17-2011 |
20120006531 | Fitting to plug an exposed deep sea pipe - The present invention comprises a fitting that is inserted into an exposed pipe in a deep sea by a submersible robot. The robot rotates a bolt which in turn rotates a gear wheel. When said gear wheel is rotated, it will rotate two diametrically opposite drill bits. A spring is placed between the drill bits so that said spring pushes the drill bits toward the inside bore of said exposed pipe. The two diametrically opposite drill bits drill and attach themselves to the inside bore of said exposed pipe. | 01-12-2012 |
20120043074 | High pressure oil pipe bullet plug - A rubber bullet-shaped cylindrical device that functions to non-invasively plug a gushing pipe of high pressure oil. The steel belted inflatable rubber plugging device with attached high pressure hoses is inserted into a gushing oil well pipe while it pumps shipboard a high pressure stream of recycled oil itself that will not freeze at the gushing oil well to fight or knife through the oil and the pressure of the oil gushing to assist with inserting and descending the apparatus into the pipe while the operator follows a sequence of operational steps. A hose that has a vacuum applied to reduce the size of the inflatable bladder to allow it to fit it into the pipe unrestricted until it stops at the right location then recycled oil that will not freeze is pumped into the bladder to seal the oil well and to allow the cement pouring operation. | 02-23-2012 |
20120097386 | Downhole Flow Device with Erosion Resistant and Pressure Assisted Metal Seal - A downhole flow device has a sliding and ported sleeves. A seal has a first component on the sliding sleeve and a second component on the ported sleeve. These components engage one another to seal flow through the ports in the ported sleeve. The components move apart to allow fluid flow through the ports. The components are protected from abrasion and flow by virtue of the seal's structure and how it is opened. The sliding sleeve moves hydraulically along an axis of the ported sleeve to reveal successive ports defined along the sleeve's axis. Operation of the device and the seal address both erosion and damage from differential pressure problems. Thus, the seal prevent damage when unloading a differential pressure across it, and abrasive flow does not have the opportunity to impinge on the sealing surfaces to cause erosion. | 04-26-2012 |
20120152524 | MODULAR FRACTURE PLUG AND METHOD OF CONSTRUCTION THEREOF - A modular fracture plug and method of construction thereof for temporarily sealing off a well is provided. The fracture plug includes an inner substrate material and an outer shell. The outer shell is provided having a plurality of individual sections bonded to one another. One of the sections provides a closed base, while another of the sections provides a closed cover, and one or more of the sections provide an intermediate section between the base and the cover. The intermediate section has a through opening forming at least a portion of the cavity. | 06-21-2012 |
20120305238 | High Temperature Crosslinked Polysulfones Used for Downhole Devices - Thermally crosslinked polysulfone may be made from linear polysulfone, such as polyethersulfone, in powder form blended with a powdered inorganic peroxide such as magnesium peroxide or another oxygen source, to form a mixture followed by compression inside a mold. The mixture is cured at a an elevated temperature, for instance above 325° C., for an effective period of time to form a dense object. The object is then boiled in water, optionally under pressure, to remove the salt to give a structure that is open and porous which may be used as a filtration device on a downhole tool for hydrocarbon recovery. If a powdered salt is not used, a thermally crosslinked, solid, void-free polysulfone is made which may be strong and rigid at ambient, surface temperatures, but is an elastomer at elevated downhole temperatures, and is thus suitable for use as a packer or an O-ring. | 12-06-2012 |
20130014938 | APPARATUS FOR STAGE-CEMENTING AN OIL WELL - An apparatus for use in stage-cementing an oil well in the region of a lost-circulation zone that is proximate an annular space defined by the lower end of an outer casing surrounding an inner casing include a load-bearing annular steel plate of substantial thickness that is positioned on, and maintained stationary relative to the inner casing by supporting and retaining means secured to the inner casing, the outer diameter of the plate being less than the inside diameter of the outer casing so that the plate can be lowered with the inner casing string to the desired location inside of the outer casing and, with a layer of gravel, to provide a seal and support the cement poured into the annulus between the inner and outer casings. | 01-17-2013 |
20130081801 | Methods for Improving Coatings on Downhole Tools - The present invention relates to the use of degradable coatings suitable for use on downhole tools. In particular, the present invention relates to pliable coatings for use on downhole tools that have been designed to be able to resist flaking or breaking off of the tool in response to a physical shock. Some embodiments of the present invention provide methods of reacting lactic acid, glycolic acid, or a combination thereof in a polymerization reaction to form a degradable polymer; combining the degradable polymer and a plasticizer to form a coating composition; applying the coating composition to a downhole tool; placing the coated downhole tool into a portion of a subterranean formation; and, hydrolyzing the degradable polymer of the coating composition to release an acid and degrade the coating. | 04-04-2013 |
20130087323 | Multi-function Surge Reduction Apparatus - A multi-function diverter tool is disclosed that allows positive-indication opening and closing of the tool in a downhole environment. | 04-11-2013 |
20130277044 | Frac Plug Body - A frac plug mandrel assembly has an inner core that permits flow that is surrounded by a thin wall tube that distributes compressive loading, such as that applied by the set sealing element to the core. The core is a cylindrically shaped insert for inside the tube and allows flow until a ball or plug is landed on a seat to close off the flow through the core. The core can have a star pattern with a series of radially extending segments from a solid hub or a cylindrical shape of a honeycomb or other porous structure that has the requisite strength to resist collapse from compressive loading of the set sealing element while still allowing sufficient flow area for fluid displacement. | 10-24-2013 |
20130284424 | Downhole Circulating Valve Having a Seal Plug - A downhole circulating valve includes a generally tubular outer housing having a generally axially extending internal passageway. At least one generally longitudinally extending circulating passageway is formed through at least a portion of the housing. At least one exterior port and at least one interior port are in fluid communication with the circulating passageway. At least one seal plug is disposed within the circulating passageway. The seal plug has a first position relative to the housing wherein the seal plug is remote from the exterior port and the interior port, thereby allowing fluid flow between the exterior port and the interior port through the circulating passageway. The seal plug has a second position relative to the housing wherein the seal plug is between the exterior port and the interior port and wherein the seal plug forms at least one metal-to-metal seal with the circulating passageway, thereby preventing fluid flow between the exterior port and the interior port. | 10-31-2013 |
20130327517 | PIN-LESS COMPOSITE SLEEVE OR COUPLING TO COMPOSITE MANDREL OR SHAFT CONNECTIONS - Different methods, devices, and systems of downhole tools are disclosed. The tools each has a sleeve attached to a mandrel to form a composite frac or bridge plug or similar coupling to a downhole tool tubing product without the use of shear pins and with tensile and compressive strength over and above what can be achieved solely with adhesive bonding, especially at elevated operating temperatures and pressures. | 12-12-2013 |
20140076539 | PLUGGING DEVICE - The present invention relates to a plugging device ( | 03-20-2014 |
20140196888 | FLOW CONTROL SYSTEM - A downhole flow control apparatus comprising: at least one tubular body ( | 07-17-2014 |
20140262212 | RESIN SYSTEM FOR COMPOSITE DOWNHOLE FRAC PLUG AND BRIDGE PLUG TOOLS AND RELATED METHODS - A new resin blend is disclosed, which may be referred to as a hybrid resin. The resin blend includes an effective amount of benzoxazine resin or benzoxazine derivative mixed with at least one of epoxy resin, phenolic resins and other thermosetting polymers at varying ratios. The new resin blend has enhanced hot/wet performance in down hole frac and bridge plug applications in a cost effective manner with ease of processing. | 09-18-2014 |
20150013965 | WELLBORE COMPOSITE PLUG ASSEMBLY - A down hole tool assembly can be installed at a desired location within a subterranean wellbore that is capable of isolating one portion of the wellbore from another, while sealing fluid pressure within the wellbore from at least one direction. The plug assembly can include components constructed of non-metallic material that can be drilled, milled or mechanically broken up more quickly and efficiently than conventional wellbore plugs. | 01-15-2015 |
20150090440 | Applications of Degradable Polymer 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. | 04-02-2015 |
20150096743 | PROTECTIVE COATING FOR A SUBSTRATE - A coating having a gradient composite structure, applied to a substrate, which may be a disposable tool. The gradient composite comprises a bonding component and an erosion and/or corrosion resistant component. When applied to a disposable tool, such as a ball and seat assembly in a downhole environment, the coating enhances the performance of disintegrable materials used in such tools. The coating may be configured to expire at the end of a selected duration, allowing the underlying material to disintegrate. | 04-09-2015 |
20150101796 | DOWNHOLE SYSTEM FOR ISOLATING SECTIONS OF A WELLBORE - Embodiments of the disclosure pertain to a downhole system useable for isolating sections of a wellbore that includes a work string comprising a downhole end; a setting sleeve coupled with the downhole end; and a downhole tool engaged with the setting sleeve during run-in, the downhole tool further comprising a mandrel, a composite member, and at least one slip, wherein the setting sleeve comprises at least one channel. | 04-16-2015 |
20150107823 | DOWNHOLE TOOL FOR OPENING A TRAVELLING VALVE ASSEMBLY OF A RECIPROCATING DOWNHOLE PUMP - A downhole tool for opening a travelling valve assembly of a downhole pump is disposed with the travelling valve assembly within a pump barrel, and includes a substantially cylindrical housing and a piston. The housing defines an axial bore extending from a bottom opening for fluid communication with the pump barrel, a radial port for fluid communication between the axial bore and the pump barrel, and a channel formed in the outer surface of the housing for fluid communication between the radial port and the travelling valve assembly. The piston occludes the axial bore above the radial port, and in response to an upward pressure exerted by a production fluid below the piston, slides upwardly within the axial bore to engage and open a valve member of the travelling valve assembly. | 04-23-2015 |
20150290858 | SOLIDIFICATION- AND EXTRUSION-MOLDED ARTICLE OF POLYGLYCOLIC ACID AND METHOD FOR MANUFACTURING SAME - Provided are: a polyglycolic acid (PGA) solidification- and extrusion-molded article that is formed from a resin material containing PGA, the PGA having a weight average molecular weight of 100,000 to 300,000 and a melt viscosity (temperature: 270° C.; shearing speed: 120 sec | 10-15-2015 |
20160053570 | SWELLABLE PACKER WITH REINFORCEMENT AND ANTI-EXTRUSION FEATURES - A packer assembly for use in a subterranean well can include a seal element which swells in the well, a reinforcement in the seal element, and an extrusion barrier which displaces outward in response to swelling of an end portion of the seal element, the reinforcement being longitudinally spaced apart from the end portion of the seal element. A method of constructing a packer assembly can include positioning a reinforcement in a seal element which swells in response to contact with a fluid, the positioning including longitudinally spacing opposite ends of the reinforcement away from opposite end portions of the seal element, and installing extrusion barriers which radially outwardly overlie the seal element end portions. | 02-25-2016 |
20160060998 | Plug apparatus - The present invention relates to a disintegratable plug apparatus for use in connection with petroleum wells, especially during pressure testing of such petroleum wells, wherein the plug apparatus comprises an outer housing surrounding at least one sealing device and a plurality of supporting bodies, at least one of the supporting bodies being in engagement with a locking device for locking to a locking sleeve, the at least one supporting body being brought out of engagement with the locking device after application of a predetermined pressure on the plug apparatus, whereby the at least one supporting body and the at least one sealing device are permitted an axial movement in the outer housing, this movement resulting in the at least one sealing device being brought into contact with loading devices adapted to subject the at least one sealing device to load so as to produce disintegration of the at least one sealing device. | 03-03-2016 |
20160177636 | TUBING ASSEMBLY WITH A TEMPORARY SEAL | 06-23-2016 |
166193000 | Free falling type (e.g., dropped ball) | 36 |
20090101334 | MULTILAYERED BALL SEALER AND METHOD OF USE THEREOF - A multilayered ball sealer having a deformable layer. The multilayered ball sealer has an outer or intermediate layer that is deformable under pressure. In the former, the deformable layer may be water-soluble or hydrolysable. In the latter, the outer layer is a sheath that contains the deformable layer and adapts to its shape. A multilayered ball sealer may be used as a diversion agent by being suspended in a fluid injected into a wellbore and applying pressure to deform the shape of the intermediate layer such that the multilayered ball sealer adapts to the shape of a perforation opening on which the multilayered ball sealer has seated. | 04-23-2009 |
20100155055 | DROP BALLS - A drop ball for use in wellbore activities, such as wellbores in oil and gas drilling, completion and/or production activities comprising a generally spherical body, the spherical body carrying at least one marker, which contains and/or can determine at least one parameter related to the drop ball, the wellbore and/or activities being conducted in the wellbore. | 06-24-2010 |
20100212884 | Ratchet Mechanism in a Fluid Actuated Device - In one aspect of the present invention, a tool comprises a fluid path defined by a bore formed within a tubular body. A guided sleeve and a reciprocating sleeve are both disposed within the bore. A gearwheel is located on an outer surface of the guided sleeve and at least one pawl located on an inner surface of the reciprocating sleeve. When the reciprocating sleeve translates axially, it rotates in a first direction. As the reciprocating rotates, the at least one pawl pushes the gearwheel and causes the guided sleeve to rotate in the first direction into a new position. | 08-26-2010 |
20110061856 | TUBULAR SEAT AND TUBULAR ACTUATING SYSTEM - A pluggable seat includes, a first portion, positionable within a tubular, that is receptive to a runnable member seatable thereagainst, a second portion positioned downstream of the first portion, having a radial dimension smaller than a smallest radial dimension of the first portion, and a profile disposed at the second portion configured to increase resistance to extrusion of a runnable member past the pluggable seat in comparison to the same pluggable seat without the profile. | 03-17-2011 |
20110277989 | CONFIGURABLE BRIDGE PLUGS AND METHODS FOR USING SAME - An insert for a downhole plug for use in a wellbore is provided, comprising a body having a bore at least partially formed therethrough, wherein one or more threads are disposed on an outer surface of the body for engaging the plug; and at least one interface is disposed on an end of the body for connecting to a tool to screw the insert into at least a portion of the plug. | 11-17-2011 |
20120145378 | BOTTOM SET DOWNHOLE PLUG - A plug for isolating a wellbore. The plug can include a body having a first end and a second end, wherein the body is formed from one or more composite materials and adapted to receive a setting tool through the first end thereof, at least one malleable element disposed about the body, at least one slip disposed about the body, at least one conical member disposed about the body, and one or more shearable threads disposed on an inner surface of the body, adjacent the second end thereof, wherein the one or more shearable threads are adapted to receive at least a portion of a setting tool that enters the body through the first end thereof, and wherein the one or more shearable threads are adapted to engage the setting tool when disposed through the body and adapted to release the setting tool when exposed to a predetermined axial force. | 06-14-2012 |
20120145379 | BOTTOM SET DOWNHOLE PLUG - A plug for isolating a wellbore. The plug can include a body having a first end and a second end, wherein the body is formed from one or more composite materials and adapted to receive a setting tool through the first end thereof, at least one malleable element disposed about the body, at least one slip disposed about the body, at least one conical member disposed about the body, and one or more shearable threads disposed on an inner surface of the body, adjacent the second end thereof, wherein the one or more shearable threads are adapted to receive at least a portion of a setting tool that enters the body through the first end thereof, and wherein the one or more shearable threads are adapted to engage the setting tool when disposed through the body and adapted to release the setting tool when exposed to a predetermined axial force. | 06-14-2012 |
20120152525 | LOW PROFILE, HIGH CAPACITY BALL INJECTOR - An injector spool supports a plurality of ball injector assemblies having respective ball cartridges adapted to load one frac ball at a time into a ball chamber of a ball launcher of the respective ball injector assemblies to provide a low profile, high capacity ball injector. | 06-21-2012 |
20120261115 | BALL SEAT HAVING BALL SUPPORT MEMBER - Apparatuses for restricting fluid flow through a well conduit comprise a tubular member having an inner wall surface defining a bore and a seat in sliding engagement with the inner wall surface. Operatively associated with the seat is a plug element support member having an expanded position when the apparatus is in a run-in position and a contracted position when the apparatus is in a set position. A plug element adapted to be disposed into the bore and landed on the seat to restrict fluid flow through the bore and the well conduit is used to move the seat which in turn moves the plug element support member from the expanded position to the contracted position, thereby providing support to the plug member landed on the seat. | 10-18-2012 |
20120279700 | CONFIGURABLE DOWNHOLE TOOLS AND METHODS FOR USING SAME - An insert for a downhole plug for use in a wellbore is provided. The insert can include a body having a bore formed at least partially therethrough. One or more threads can be disposed on an outer surface of the body and adapted to threadably engage an inner surface of the plug proximate a first end of the plug. One or more shearable threads can be disposed on an inner surface of the body. The one or more shearable threads can be adapted to threadably engage a setting tool that enters the plug through the first end thereof and to deform to release the setting tool when exposed to a predetermined force that is less than a force required to deform the one or more threads disposed on the outer surface of the body. At least one impediment can be disposed within the body. | 11-08-2012 |
20130098600 | Manufacturing Technique for a Composite Ball for Use Downhole in a Hydrocarbon Wellbore - A system and method for a composite ball for use downhole in a hydrocarbon wellbore, the composite ball having: a core; a fiber structure arranged around the core, wherein the fiber structure has non-uniform oriented fiber; and a resin within and encasing the fiber structure arranged around the core. A system and method for fabricating a composite ball for use downhole in a hydrocarbon wellbore, including arranging at least one fiber m a plurality of non-uniform orientations around a core; infusing a resin onto the at least one fiber arranged around the core; and forming a resin skin on the composite ball. | 04-25-2013 |
20130160992 | DISSOLVABLE TOOL - A dissolvable tool includes a body having at least one stress riser configured to concentrate stress thereat to accelerate structural degradation of the body through chemical reaction under applied stress within a reactive environment. | 06-27-2013 |
20130240203 | DECOMPOSABLE IMPEDIMENTS FOR DOWNHOLE TOOLS AND METHODS FOR USING SAME - A plug for isolating a wellbore is provided. The plug can include a mandrel having a bore formed therethrough, at least one sealing element disposed about the mandrel, at least one slip disposed about the mandrel, at least one conical member disposed about the mandrel, and an insert disposed at least partially within the bore of the mandrel. The insert can include a body, at least one circumferential groove disposed on an outer surface of the body, wherein the at least one circumferential groove is adapted to retain an elastomeric seal, and at least one interface disposed on an end of the body for securing the insert into the mandrel. The body can also have a bore formed only partially therethrough or a bore formed completely therethrough with the body being adapted to receive an impediment that restricts fluid flow in at least one direction through the body. At least one of the body and the impediment can include one or more decomposable materials. | 09-19-2013 |
20130284425 | Dissolvable Tool - A dissolvable tool includes, a body with a surface having at least one perforation therethrough, the at least one perforation being dimensioned to control a rate of intrusion of an environment reactive with at least a portion of the dissolvable tool located below the surface. | 10-31-2013 |
20140166265 | BALL DROP WELLHEAD CONTROL APPARATUS - A ball drop wellhead control apparatus provides a control ball between one of a frac ball drop and a frac ball injector used to drop frac balls into a frac fluid stream being pumped into a subterranean well to ensure that only frac balls intended to be dropped reach the frac fluid stream. | 06-19-2014 |
20140251594 | Millable Fracture Balls Composed of Metal - A ball is used for engaging in a downhole seat and can be milled out after use. The ball has a spherical body with an outer surface. An interior of the spherical body is composed of a metallic material, such as aluminum. The spherical body has a plurality of holes formed therein. The holes extend from at least one common vertex point on the outer surface of the spherical body and extend at angles partially into the interior of the spherical body. | 09-11-2014 |
20140345852 | LANDING COLLAR - A landing collar having a housing, a first sleeve configured to receive a lead wiper plug, and a latching mechanism configured to couple the first sleeve to an inner wall of the housing. The latching mechanism including a c-ring coupled to the housing and a landing insert disposed within the c-ring. | 11-27-2014 |
20140367083 | MODULAR CHANGEABLE FRACTIONATION PLUG - A modular changeable fractionation plug for use in a wellbore with a crown engagement and a plug receiving end formed on a mandrel which is adapted to be a caged ball configuration, a drop ball configuration and a bridge plug configuration. | 12-18-2014 |
20150101797 | DOWNHOLE TOOL AND METHOD OF USE - A downhole tool useable for isolating sections of a wellbore, the downhole tool including a setting sleeve; and a mandrel further comprising a first end and a second end. The second end includes a first outer surface area and a second outer surface area. The second outer surface area is in contact with the setting sleeve prior to setting of the tool, and at least part of the first outer surface area is not in contact with the setting sleeve prior to setting of the tool. | 04-16-2015 |
20150345247 | Hydraulic Fracturing Ball Sealers - A hydraulic fracturing ball sealer used in fracturing of shale formations. A preferred embodiment is constructed of a generally spherical core and a pair of hemispherical shells positioned about the core. The shells are secured to each other along an equatorial seam. The multilayer frac-ball provides a strong but machinable structure with a pliable outer surface that is corrosion resistant, has a specific gravity that allows it to float in the fracturing fluid, and is relatively easy and inexpensive to manufacture. The frac-ball of the present invention is a two piece metal and polymer design. A two-part embodiment comprises a polymer core with a metal case or shell. A layer of epoxy resin may be used to secure the shell to the core. Alternate embodiments include multiple layers of different materials, generally arranged concentrically within the spherical shape. The surface of the frac-ball may be smooth, scored, or serrated. | 12-03-2015 |
20150354312 | CORRODIBLE DOWNHOLE ARTICLE AND METHOD OF REMOVING THE ARTICLE FROM DOWNHOLE ENVIRONMENT - A method of removing a corrodible downhole article having a surface coating includes eroding the surface coating by physical abrasion, chemical etching, or a combination of physical abrasion and chemical etching, the surface coating comprising a metallic layer of a metal resistant to corrosion by a corrosive material. | 12-10-2015 |
20160084035 | Packer Bridge Plug with Removable/Dissolvable Ball Seat - A packer tool is provided having a moveable, resizeable or dissolvable ball seat. In the process of fracking, it is expensive to run tools into and out of the well. It is therefore desirable to run in tools that can serve multiple purposes during the fracking process. The present invention in at least one embodiment is therefore to a packer tool that can be used to seal a well bore and when the ball is removed presents only a small resistance to the production flow up through the plug. The removal of the ball is facilitated by removing the ball seat as an obstacle to the upward flow of the ball by dissolving, moving or resizing the ball seat. | 03-24-2016 |
20160177656 | DECELERATOR DEVICE FOR BALL ACTIVATED DOWNHOLE TOOLS | 06-23-2016 |
166194000 | With sleeve valve | 13 |
20100126715 | Device or Actuating a Bottom Tool - The invention relates to a bottom tool comprising a tubular body ( | 05-27-2010 |
20100212885 | Downhole Tool Actuation having a Seat with a Fluid By-Pass - In one aspect of the present invention, a downhole tool has a fluid path defined by a bore formed within a tubular body of the tool, a reciprocating sleeve located within the bore, the sleeve has a segmented seat with a fluid by-pass; at least one seat segment is positioned by an outer diameter of the sleeve to complete the seat, and a relief formed in a wall adjacent the outer diameter of the sleeve; wherein when the seat is occupied by an obstruction only a portion of the fluid path is obstructed and fluid impinging the obstruction causes the sleeve to move in the direction of flow until the at least one segment is relieved by the relief and releases the obstruction. | 08-26-2010 |
20100212886 | Downhole Tool Actuation having a Seat with a Fluid By-Pass - In one aspect of the present invention, a downhole tool has a fluid path defined by a bore formed within a tubular body of the tool, a reciprocating sleeve located within the bore, the sleeve has a segmented seat with a fluid by-pass; at least one seat segment is positioned by an outer diameter of the sleeve to complete the seat, and a relief formed in a wall adjacent the outer diameter of the sleeve; wherein when the seat is occupied by an obstruction only a portion of the fluid path is obstructed and fluid impinging the obstruction causes the sleeve to move in the direction of flow until the at least one segment is relieved by the relief and releases the obstruction. | 08-26-2010 |
20120103593 | System for a Downhole String with a Downhole Valve - In one aspect of the present invention, a system for a downhole string comprises a fluid path defined by a bore formed within a tubular component. A reciprocating valve is located within a wall of the bore hydraulically connecting the bore with a fluid passage. The valve comprises a substantially cylindrical shaped housing. First and second ports are disposed on a circumference of the housing, and a fluid pathway is disposed intermediate the first and second ports. The valve comprises an axially slidable spool disposed within and coaxial with the housing and comprises a blocker. The blocker is configured to slide axially so to block and unblock the fluid pathway to control a flow from the bore to the fluid passage. The valve comprises a plurality of seals. Each seal is disposed opposite of the blocker causing pressure to be equally applied to the blocker and the plurality of seals. | 05-03-2012 |
20120103594 | System for a Downhole String with a Downhole Valve - In one aspect of the present invention, a system for a downhole string comprises a fluid path defined by a bore formed within a tubular component. A reciprocating valve is located within a wall of the bore hydraulically connecting the bore with a fluid passage. The valve comprises a substantially cylindrical shaped housing. First and second ports are disposed on a circumference of the housing, and a fluid pathway is disposed intermediate the first and second ports. The valve comprises an axially slidable spool disposed within and coaxial with the housing and comprises a blocker. The blocker is configured to slide axially so to block and unblock the fluid pathway to control a flow from the bore to the fluid passage. The valve comprises a plurality of seals. Each seal is disposed opposite of the blocker causing pressure to be equally applied to the blocker and the plurality of seals. | 05-03-2012 |
20120103595 | Sintered Polycrystalline Diamond Tubular Members - In one aspect of the present invention, an external tubular member comprises an external outside surface and an external inside surface joined by an external wall thickness. The external wall thickness comprises external sintered polycrystalline diamond. An internal member comprises an internal outside surface and an internal width. The internal width comprises internal sintered polycrystalline diamond. The external inside surface is adjacent to the internal outside surface. | 05-03-2012 |
20120199341 | Segmented Collapsible Ball Seat Allowing Ball Recovery - A series of ball seat assemblies preferably used to open a series of sliding sleeves for formation access to a zone that is to be fractured allows sequential shifting of the sleeves with a single ball. The ball is guided by a tapered member with a lower outlet larger than the ball. The ball lands on the segments that are initially supported. Some leakage occurs between the segments but not enough to prevent pressure buildup to shift the sleeves. The tapered member closely fits to the segments to minimize leakage. Shifting the segments axially allows them to retract so the ball passes to eventually land on a non-leaking seat so that the zone can be fractured. The ball is recovered at the surface after passing the retracted segments and going through the undistorted opening in the tapered member. | 08-09-2012 |
20120318497 | Downhole tool - A downhole tool may include a generally hollow piston having a trigger element extending therefrom, the piston configured to slide along an axial cavity extending through a tubular body of the tool. The trigger element may move from a first position where the trigger engages a support on the body and the piston is fixed, to a second position where the trigger disengages and the piston is released. The tool may also include a generally tubular relief sleeve releasably coupled with the piston using a shear pin, while the trigger element is in the first position, and disposed between the trigger and an extension of the piston, to allow the sleeve to slide between the trigger and the extension after shearing of the pin. The piston, sleeve and pin may be configured to allow the sleeve to release from the piston in response to the shearing of the pin. | 12-20-2012 |
20130133878 | Setting Subterranean Tools with Flow Generated Shock Wave - A circulation sub is provided that has a ball seat and a circulation port that is closed when a ball is landed on the seat. An axial passage directs the pressure surge created with the landing of the ball on the seat to the port with the actuation piston for the tool. The surge in pressure operates the actuation piston to set the tool, which is preferably a packer. In an alternative embodiment raising the circulation rate through a constriction in a circulation sub breaks a shear device and allows the restriction to shift to cover a circulation port. The pressure surge that ensues continues through the restriction to the actuating piston for the tool to set the tool. | 05-30-2013 |
20130192819 | SUBTERRANEAN WELL TOOLS HAVING NONMETALLIC DRAG BLOCK SLEEVES - Disclosed is a drag block assembly for use on a downhole tool for location in a cased wellbore. The tool has a hollow mandrel for suspension from a tubing string. The drag block, slips and packing elements mounted on the mandrel are moveable between the run and set positions by movement of the drag block, while engaging a lug on the mandrel. The drag block assembly comprises longitudinally spaced rings comprising resilient material connected together by longitudinally extending members. | 08-01-2013 |
20140008055 | Multi-function Surge Reduction Apparatus - A multi-function diverter tool is disclosed that allows positive-indication opening and closing of the tool in a downhole environment. | 01-09-2014 |
20140083678 | BALL SEAT FOR A WELL FRACTURING APPARATUS AND METHOD OF MAKING AND USING SAME - Device and an apparatus incorporating the device for use in wellbore fracturing applications. The device is a ball seat that allows for use of a smaller difference in ball size versus the size of an opening in the ball seat. The ball seat is constructed of metallic material and polymeric material. | 03-27-2014 |
20140182838 | MULTI-LEVEL SLIDING SLEEVE - A multi-level sliding sleeve including an outer cylinder, an inner sliding sleeve, a combined ball socket, a guider, an expander, an upper gland, a lower gland, and a ball. The outer cylinder includes internal threads in an upper end and external threads in a lower end, and the outer cylinder including an external wall including a plurality of drainage holes along the peripheral direction. The inner sliding sleeve is mounted to an inner wall of the outer cylinder through shear pins. The inner sliding sleeve includes a plurality of square holes in the middle along the peripheral direction, each of which is equipped with a ball socket inside. The ball sockets combine together to form a combined ball socket. The combined ball socket is equipped with the guider in the upper end and the expander in the lower end. | 07-03-2014 |