| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 175002000 | BORING WITH EXPLOSION IN INACCESSIBLE HOLE | 74 |
| 20090139766 | Methods of Perforation Using Viscoelastic Surfactant Fluids and Associated Compositions - The invention provides a method for perforating a well with a perforating fluid comprising a viscoelastic surfactant that essentially stops fluid leak-off after perforation in an overbalanced condition. Another aspect of the invention provides the perforating fluid in itself. The well has a wellbore defined by a generally cylindrical casing in at least a portion of the wellbore (i.e., the wellbore is cased, although it is not necessary cased in its entire length). The wellbore passes through a subterranean formation that comprises hydrocarbon formation fluids (such as oil and/or gas), at least in certain strata. The method comprises placing a perforating device in a wellbore which includes at least one explosive perforating charge that can be detonated in order to perforate the casing and allow the formation fluids to enter the wellbore. The casing is located between the subterranean formation and the perforating device. A perforating fluid including at least one viscoelastic surfactant is placed in the wellbore between the perforating device and the casing, in at least a portion of the wellbore. In other words, the perforating fluid is present in the wellbore adjacent to the perforating device. The explosive charge(s) in the perforating device is detonated, such that the perforating device forms at least one perforation in the casing that permits the flow of hydrocarbon formation fluids from the subterranean formation into the wellbore. As a result of the detonation, at least a portion of the perforating fluid is put in communication with the subterranean formation. | 06-04-2009 |
| 20090183916 | SYSTEM AND METHOD FOR ENHANCED WELLBORE PERFORATIONS - A method for perforating a subterranean formation includes positioning a shaped charge and a reactant composite material in a carrier; positioning the carrier in the wellbore; detonating the shaped charge; and disintegrating the reactant composite material using a shock generated by the detonated shaped charge. The method may also include initiating a first deflagration by using carbon and heat resulting from the detonation of the shaped charge and an oxygen component of the disintegrated reactant composite material. A system for performing the method may include a carrier, a shaped charge positioned in the carrier; and a reactant composite material positioned in the carrier. The reactant composite material may be configured to disintegrate upon detonation of the shaped charge. | 07-23-2009 |
| 20100000789 | Novel Device And Methods for Firing Perforating Guns - A perforating gun train for perforating two or more zones of interest includes two or more gun sets made up of guns, one or more activators, and other associated equipment. An illustrative apparatus may include a first perforating gun; an activator responsive to the firing of the first perforating gun and a fuse element detonated by the activator; and a second perforating gun that is fired by the fuse element. An illustrative method for perforating a subterranean formation may include forming a perforating gun train using at least a first perforating gun and a second perforating gun; and energetically coupling the first perforating gun and the second perforating gun with an activator. | 01-07-2010 |
| 20100044101 | METHODS, SYSTEMS, AND APPARATUS FOR PRODUCTION OF HYDROCARBONS FROM A SUBTERRANEAN FORMATION - Methods, systems, and apparatus that are suitable for use in production of hydrocarbons from subterranean heavy oil deposits employ a subterranean cavity in communication with a borehole. The cavity is preferably formed along a U-tube borehole by coiled tubing reaming operations and/or radial drilling and explosive blasting. | 02-25-2010 |
| 20100089643 | EXPOSED HOLLOW CARRIER PERFORATION GUN AND CHARGE HOLDER - The perforation gun is comprised of a tubular carrier, a charge holder, a plurality of sealed charges, and a detonating cord. The tubular carrier has a length and a plurality of openings. The charge holder has a length and is comprised of a plurality of mounting locations which are each capable of receiving one of the sealed charges. The charge holder is capable of being secured within the carrier. The detonating cord is coupled to at least one sealed charge. In the mounted position and when the charge holder is secured within the carrier, the charges are aligned with the openings in the carrier such that, upon detonation, charge blasts emitted from the charges exit though the carrier openings and perforate a well casing and cement. In one aspect of the invention, the carrier openings are spirally arranged and spaced along the length of the carrier. In still another aspect of the invention, the openings are vertically arranged and spaced along the length of the carrier. In still another aspect of the invention, the carrier is closed at the top and bottom. In still another aspect of the invention, the carrier is capable of capturing debris created by a charge blast emitted from the sealed charges. | 04-15-2010 |
| 20100133004 | System and Method for Verifying Perforating Gun Status Prior to Perforating a Wellbore - A system for verifying perforating gun status prior to perforating a wellbore. The system includes a perforating gun ( | 06-03-2010 |
| 20100133005 | Method for the Enhancement of Dynamic Underbalanced Systems and Optimization of Gun Weight - By using reactive shaped charges, a dynamic underbalance effect associated with detonation of a perforating system is enhanced without compromising shot density. Fewer shaped charges can be loaded to achieve the same or better effective shot density as a gun fully loaded with conventional shaped charges, thereby increasing the free volume within the gun while creating debris-free tunnels with fractured tips and substantially eliminating the crushed zone surrounding each perforated tunnel. Further, the strength and grade of gun steel required to construct the gun can be reduced without compromising the amount the gun swells following detonation. | 06-03-2010 |
| 20100147587 | WELL COMPLETION APPARATUS AND METHODS - A wellbore tool includes a perforating charge adapted to create a tunnel in a subterranean formation upon activation; a propellant that provides a pressure cycle when activated; and a delay device operationally connected to the perforating charge and the propellant to activate the perforating charge and the propellant in a manner to influence a selected wellbore condition. | 06-17-2010 |
| 20100212960 | Method for optimizing the prediction and assessment of earthquakes and/or seismic vibrations - The scales that allow for the shear planes (first scale), the rock and/or crust geometry (second scale), and the change of the geometries as earthquake systematics (third scale) are the basis for prediction and reduction of intensity. Actions to generate mini-movements to reduce the intensity of earthquakes are then concentrated on those areas where the stress concentrations generate jerky movements to alter the rock geometry (third scale). Based on the scale, the large-scale areas that influence the local stress concentrations and are involved in the jerky movements are thus taken into consideration. | 08-26-2010 |
| 20100243323 | PRESSURE COMPENSATION FOR A PERFORATING GUN - A perforating system having a perforating gun with a pressurizable gun body. The gun body can be pressurized prior to deployment in a wellbore, or while in the wellbore. Pressurizing the gun body can include adding fluid into the gun body, such as a pressurized gas, a liquid, or combustion products. A seal diaphragm can be used to transfer wellbore pressure into the gun body. | 09-30-2010 |
| 20100270076 | METHOD AND EQUIPMENT FOR SMALL-CHARGE BLASTING - A method for small-charge blasting, and a rock drilling unit used therein. By means of a rock drilling machine of the rock drilling unit, a drill hole is first drilled into material to be excavated, after which one or more cartridges comprising a propellant charge are fed through a drilling tool onto the bottom of the drill hole. The drilling unit comprises a cartridge feed station, which is separate from the rock drilling machine and from which the cartridges may be fed into a longitudinal channel in the drilling tool. | 10-28-2010 |
| 20100300750 | Perforating Apparatus for Enhanced Performance in High Pressure Wellbores - A perforating apparatus ( | 12-02-2010 |
| 20110139505 | SHAPED CHARGE - A perforating apparatus that is usable with a well includes a shaped charge. The shaped charge includes a case, an explosive and a liner. The liner is adapted to form a perforation jet to form a perforation tunnel and promote an exothermic reaction inside the tunnel to create a pressure wave to force debris from the tunnel. | 06-16-2011 |
| 20110266053 | CARTRIDGE FOR BREAKING ROCK - A rock breaking cartridge in which an energetic composition is ignited by an actuator which acts on a primer through the medium of water in a confined volume between the actuator and the primer. | 11-03-2011 |
| 20120152614 | COUPLER COMPLIANCE TUNING FOR MITIGATING SHOCK PRODUCED BY WELL PERFORATING - A method of mitigating perforating effects produced by well perforating can include causing a shock model to predict perforating effects for a proposed perforating string, optimizing a compliance curve of at least one proposed coupler, thereby mitigating the perforating effects for the proposed perforating string, and providing at least one actual coupler having substantially the same compliance curve as the proposed coupler. A well system can comprise a perforating string including at least one perforating gun and multiple couplers, each of the couplers having a compliance curve, and at least two of the compliance curves being different from each other. A method of mitigating perforating effects produced by well perforating can include interconnecting multiple couplers spaced apart in a perforating string, each of the couplers having a compliance curve, and selecting the compliance curves based on predictions by a shock model of shock generated by the perforating string. | 06-21-2012 |
| 20120152615 | PERFORATING STRING WITH LONGITUDINAL SHOCK DE-COUPLER - A shock de-coupler for use with a perforating string can include perforating string connectors at opposite ends of the de-coupler, a longitudinal axis extending between the connectors, and a biasing device which resists displacement of one connector relative to the other connector in both opposite directions along the longitudinal axis, whereby the first connector is biased toward a predetermined position relative to the second connector. A perforating string can include a shock de-coupler interconnected longitudinally between components of the perforating string, with the shock de-coupler variably resisting displacement of one component away from a predetermined position relative to the other component in each longitudinal direction, and in which a compliance of the shock de-coupler substantially decreases in response to displacement of the first component a predetermined distance away from the predetermined position relative to the second component. | 06-21-2012 |
| 20120152616 | PERFORATING STRING WITH BENDING SHOCK DE-COUPLER - A bending shock de-coupler for use with a perforating string can include perforating string connectors at opposite ends of the de-coupler. A bending compliance of the de-coupler may substantially increase between the connectors. A well system can include a perforating string including at least one perforating gun and multiple bending shock de-couplers, each of the de-couplers having a bending compliance, and at least two of the bending compliances being different from each other. A perforating string can include a bending shock de-coupler interconnected longitudinally between two components of the perforating string. A bending compliance of the bending shock de-coupler may substantially decrease in response to angular displacement of one of the components a predetermined amount relative to the other component. | 06-21-2012 |
| 20130014990 | Novel Device and Methods for Firing Perforating Guns - A perforating gun train for perforating two or more zones of interest includes two or more gun sets made up of guns, one or more activators, and other associated equipment. An illustrative apparatus may include a first perforating gun; an activator responsive to the firing of the first perforating gun and a fuse element detonated by the activator; and a second perforating gun that is fired by the fuse element. An illustrative method for perforating a subterranean formation may include forming a perforating gun train using at least a first perforating gun and a second perforating gun; and energetically coupling the first perforating gun and the second perforating gun with an activator. | 01-17-2013 |
| 20130043074 | ELECTROMECHANICAL ASSEMBLY FOR CONNECTING A SERIES OF GUNS USED IN THE PERFORATION OF WELLS - Electromechanical assembly for connecting a series of guns used in the perforation of petroleum producing wells. Each gun has a cylindrical housing for a charge-carrier loaded with explosive shaped-charges set in radial fashion. The charges are in contact with a detonating cord that is in contact with an electronically activated detonator. The series of guns are joined firmly by intermediary joints and terminate in a bottom sub on its lower extreme, where the series is initiated by a firing head which is connected to the surface with an electrical connection. It is possible to detonate the charge-carrier of each gun, beginning with the bottommost gun that remains active. | 02-21-2013 |
| 20130056269 | DEGRADABLE SHAPED CHARGE AND PERFORATING GUN SYSTEM - A selectively corrodible perforating gun system is disclosed. The perforating gun system includes a shaped charge comprising a charge case having a charge cavity, a liner disposed within the charge cavity and an explosive disposed within the charge cavity between the liner and the charge case, wherein the charge case and liner are each formed from selectively corrodible powder compact material. The perforating gun system also includes a shaped charge housing configured to house the shaped charge. | 03-07-2013 |
| 20130118805 | DISAPPEARING PERFORATING GUN SYSTEM - A system and methodology facilitates creation of perforations along a wellbore. The technique utilizes a perforating gun system having cooperating components, such as a carrier, a loading system, and a plurality of shaped charges. The cooperating components are constructed to break down into multiple smaller pieces upon detonation of the plurality of shaped charges. This allows the perforating gun system to effectively disappear within the wellbore such that any remaining small pieces do not interfere with well flow and/or later interventions. | 05-16-2013 |
| 20130126237 | Pass-through Bulkhead Connection Switch for a Perforating Gun - Embodiments of the present invention relate to systems, methods, and apparatus for reliably communicating a detonation signal and perforating oil and/or gas well casings. Particularly, at least one embodiment includes a pass-through bulkhead connection switch that can reliably withstand high operating temperatures and pressures. Such pass-through bulkhead connection switch can be used in perforating gun assemblies and can eliminate or reduce incidents of failed detonations. | 05-23-2013 |
| 20130126238 | Oil Well Perforators - An oil and gas well shaped charge perforator capable of providing an exothermic reaction after detonation is provided, comprising a housing ( | 05-23-2013 |
| 20130153295 | COUPLER COMPLIANCE TUNING FOR MITIGATING SHOCK PRODUCED BY WELL PERFORATING - A method of mitigating perforating effects produced by well perforating can include causing a shock model to predict perforating effects for a proposed perforating string, optimizing a compliance curve of at least one proposed coupler, thereby mitigating the perforating effects for the proposed perforating string, and providing at least one actual coupler having substantially the same compliance curve as the proposed coupler. A well system can comprise a perforating string including at least one perforating gun and multiple couplers, each of the couplers having a compliance curve, and at least two of the compliance curves being different from each other. A method of mitigating perforating effects produced by well perforating can include interconnecting multiple couplers spaced apart in a perforating string, each of the couplers having a compliance curve, and selecting the compliance curves based on predictions by a shock model of shock generated by the perforating string. | 06-20-2013 |
| 20130206475 | METHOD TO OPTIMIZE PERFORATIONS FOR HYDRAULIC FRACTURING IN ANISOTROPIC EARTH FORMATIONS - The subject disclosure relates to determining an optimum orientation for perforations around the circumference of a subsurface borehole and optimum wellbore fluid initiation pressure for hydraulic fracturing in anisotropic formations. | 08-15-2013 |
| 20130270003 | DEVICES AND METHODS FOR PERFORATING A WELLBORE - An apparatus and method for perforating a subterranean formation is disclosed. The apparatus includes a tubular carrier; a charge tube disposed in the tubular carrier; and at least one shaped charge mounted in the charge tube which includes a casing, an explosive material and a liner enclosing the explosive material within the casing. An apex portion of the liner has a cross-sectional thickness greater than a cross-sectional thickness of any other portion of the liner. The cross-sectional thickness of the apex portion may be at least fifty percent thicker than a cross-section of a portion adjacent the apex portion. A density of the apex portion may be greater than the density of any other portions of the liner. | 10-17-2013 |
| 20130277108 | ENERGY TRANSFER DEVICE - A energy transfer device ( | 10-24-2013 |
| 20130327571 | UTILIZATION OF SPHEROIDIZED TUNGSTEN IN SHAPED CHARGE SYSTEMS - A shaped charge includes a casing, a liner disposed within an opening of the casing and an explosive disposed between the casing and the liner. The liner is made of a metal powder blend that includes a spheroidized metal powder. The spheroidized metal powder includes a spheroidized tungsten powder. The metal powder blend may further include a binder and a lubricant. The binder includes copper or lead. The lubricant includes graphite. | 12-12-2013 |
| 20140034384 | METHOD AND APPARATUS FOR EXPENDABLE TUBING-CONVEYED PERFORATING GUN - Methods and apparatus are presented for a “disappearing” perforator gun assembly. In a preferred method of perforating a well casing, inserted into the well casing is a tubing conveyed perforator having an outer tubular made from a metallic glass alloy having high strength and low impact resistance. An inner structure is positioned within the outer tubular and holds one or more explosive charges. Upon detonating the explosive charges, the outer tubular is fragmented. The inner structure is preferably also substantially destroyed upon detonation of the one or more explosive charges. For example, the inner structure can be made from a combustible material, corrodible, dissolvable, etc., material. A disintegration-enhancing material is optionally positioned between the outer tubular and the inner structure. Additional embodiments are presented having gun housings which dematerialize upon detonation of the charges. | 02-06-2014 |
| 20140076631 | Perforation Gun String Energy Propagation Management with Tuned Mass Damper - A perforation tool assembly comprises a perforation gun, and a mass energy absorber coupled to the perforation gun. The mass energy absorber is configured to alter the propagation of mechanical energy released by firing one or more perforation guns. The mass energy absorber comprises a mass and at least one absorber, and the at least one absorber is disposed between the mass and the perforating gun. | 03-20-2014 |
| 20140083764 | METHOD AND APPARATUS FOR EXPENDABLE TUBING-CONVEYED PERFORATING GUN - Methods and apparatus are presented for a “disappearing” perforator gun assembly. In a preferred method of perforating a well casing, inserted into the well casing is a tubing conveyed perforator having an outer tubular made from a metallic glass alloy having high strength and low impact resistance. An inner structure is positioned within the outer tubular and holds one or more explosive charges. Upon detonating the explosive charges, the outer tubular is fragmented. The inner structure is preferably also substantially destroyed upon detonation of the one or more explosive charges. For example, the inner structure can be made from a combustible material, corrodible, dissolvable, etc., material. A disintegration-enhancing material is optionally positioned between the outer tubular and the inner structure. Additional embodiments are presented having gun housings which dematerialize upon detonation of the charges. | 03-27-2014 |
| 20140102788 | PERFORATING ASSEMBLY CONTROL - A perforating assembly includes a material that can respond to a magnetic field by changing shape multiple times and causing a fire control circuit to activate and deactivate. The material may be a magnetic shape-memory alloy and can change shape when the magnetic field is removed or inverted. When the material changes shape, the material can cause another component of the perforating assembly to change position to activate or deactivate the fire control circuit, as desired. | 04-17-2014 |
| 20140116775 | WELL PERFORATING APPARATUS - The present invention discloses a wellbore perforating apparatus. The apparatus includes a tubular body and a perforating charge. The tubular body has a wall defining an interior space and an exterior space and the wall has a cavity. In some embodiments, the cavity may be shaped to define a charge socket that receives a perforating charge. The perforating charge is configured in the cavity at a location inside the wall. The perforating charge is configured to discharge toward and into the interior space and penetrate into the exterior space by perforating the wall across the interior space from the location of the perforating charge. | 05-01-2014 |
| 20140144702 | Perforating Gun Debris Retention Assembly and Method of Use - A perforating gun system comprises at least one charge disposed within a gun body, and a first sleeve disposed within the gun body about the at least one charge. The first sleeve comprises a first expansion section, and the first sleeve is configured to undergo non-uniform expansion in response to the detonation of the at least one charge. | 05-29-2014 |
| 20140262502 | Wellbore Servicing Tools, Systems and Methods Utilizing Near-Field Communication - A wellbore servicing system comprising a controller node disposed within a wellbore, and a tool node configured for movement through the wellbore, wherein the tool node communicates with the controller node via a near field communication (NFC) signal, wherein prior to communication with the controller node, the tool node will not perform at least one function and, after communication with the controller node, the tool node will selectively perform the at least one function. | 09-18-2014 |
| 20140262503 | Perforation Gun String Energy Propagation Management with Tuned Mass Damper - A perforation tool assembly comprises a perforation gun, and a mass energy absorber coupled to the perforation gun. The mass energy absorber is configured to alter the propagation of mechanical energy released by firing one or more perforation guns. The mass energy absorber comprises a mass and at least one absorber, and the at least one absorber is disposed between the mass and the perforating gun. | 09-18-2014 |
| 20140291022 | AMORPHOUS SHAPED CHARGE COMPONENT AND MANUFACTURE - A shaped charge incorporating an amorphous-based material component. The amorphous-based material component may be a liner for the shaped charge to enhance a jet for a perforating application. Other components of the shaped charge and/or perforating gun that accommodates the shaped charge may be of amorphous-based materials. Further, the liner and other components of the shaped charge may be manufactured by way of three dimensional printing. Indeed, a multi-material three dimensional print application may be utilized to form shaped charge components simultaneously along with an entire perforating gun system. Thus, tailored morphology and material gradient characteristics may be readily incorporated into the gun and shaped charge components with a considerable degree of precision. | 10-02-2014 |
| 20150144399 | ENERGY TRANSFER DEVICE - An energy transfer device ( | 05-28-2015 |
| 175300500 | Explosive charge carried by projectile | 1 |
| 20140209381 | PRESSURE INDUCING CHARGE - A charge assembly for incorporation into a downhole tool to induce pressure at an interior of the tool during a downhole application. The assembly includes a reactive powder metals that is particularly configured of a reaction rate slower than that of a high energy explosive directed at the application. Thus, upon triggering of the explosive and downhole application in a high pressure well environment, reaction of the powder metals may serve to substantially reduce any pressure differential at the tool. As such, shock related damage due to sudden introduction of pressure differential wave to the tool may be minimized. | 07-31-2014 |
| 175004000 | Driving core receiver by explosion or with receptacle collecting material in bore | 1 |
| 20100163305 | Apparatus and Methods for Sidewall Percussion Coring Using a Voltage Activated Igniter - An apparatus and methods for sidewall percussion coring service are disclosed. In some embodiments, the side-wall percussion coring tool includes a voltage activated igniter, explosive material, and a core barrel in communication with the explosive material, wherein activation of the igniter causes detonation of the explosive material to propel the core barrel from tool. Some method embodiments for performing sidewall percussion coring service using the disclosed sidewall percussion coring tool include positioning the tool within a wellbore, activating the voltage activated igniter housed within the tool, detonating the explosive material within the tool with the voltage activated igniter, propelling a core barrel from the tool into the surrounding formation by detonation of the explosive material, retrieving the core barrel from the formation, and removing the tool from the wellbore. | 07-01-2010 |
| 175400500 | Directing successive projectiles or charges in same path | 3 |
| 20100032206 | Device and method for explosive drilling - The invention relates to a device and a method for explosive drilling. Explosive capsules are fired by a firing device at a material to be stripped. A high degree of safety is attained in that use is made of an explosive with liquid oxygen that is only produced immediately before its application. | 02-11-2010 |
| 20130098681 | COMBINED FRACTURING AND PERFORATING METHOD AND DEVICE FOR OIL AND GAS WELL - A combined fracturing and perforating method and device for oil and gas well are disclosed. The method utilizes an explosion of a perforating charge ( | 04-25-2013 |
| 20130292174 | COMPOSITE LINERS FOR PERFORATORS - A shaped charge having a charge case and liner with an outer layer and an inner layer. The liner is a generally hollow frustoconically shaped member with an open end and a closed end, where the closed end of the liner inserts into an opening in the charge case. An explosive is provided between the liner and the charge case. The inner layer of the liner includes a higher density material than material used for forming the outer layer. | 11-07-2013 |
| 175400510 | With position orienting or indicating | 7 |
| 20090288879 | SYSTEM TO PERFORATE A CEMENTED LINER HAVING LINES OR TOOLS OUTSIDE THE LINER - The present application relates to a downhole perforating system having a cemented-in lower completion including one or more orienting nipples, each orienting nipple having a recess key, and one or more lines or tools carried on the exterior of the lower completion and oriented relative to the recess key. The downhole perforating system also includes a perforating string having one or more blank sections oriented relative to an orienting key that is brought into alignment with the recess key when the perforating string is landed in the orienting nipple. Upon landing, the perforating string can be fired without damaging the lines or tools outside the lower completion. | 11-26-2009 |
| 20100230163 | System and Method for Dynamically Adjusting the Center of Gravity of a Perforating Apparatus - A perforating apparatus ( | 09-16-2010 |
| 20120193143 | PRE-VERIFICATION OF PERFORATION ALIGNMENT - A perforating system, comprising a perforating gun with shaped charges, and a pre-detonation orientation apparatus and method. The pre-detonation orientation device comprises an orientation device in communication with the firing means of the perforating gun. Detonation of the shaped charges can be contingent upon the perforating gun orientation. | 08-02-2012 |
| 20140131097 | Pressure Limiting Device for Well Perforation Gun String - A perforation gun. The perforation gun comprises a tool body, the tool body defining at least one shouldered hole wherein the shouldered hole comprises a hole through a wall of the tool body and a shoulder that is thinner than the wall of the tool body and at least one perforating explosive charge disposed within the tool body. | 05-15-2014 |
| 20160108708 | APPARATUS AND METHOD EMPLOYING PERFORATING GUN FOR SAME LOCATION MULTIPLE RESERVOIR PENETRATIONS - Methods and apparatus are provided for conducting multiple successive same-location firings of a number of shaped charges carried by a perforating gun that is lowered into the wellbore and precisely positioned to align its charges with the penetration created by the first fired-charges in order to produce deeper and larger diameter penetrations that result in enhanced hydraulic fracturing of the reservoir and increased gas production from the completed well. | 04-21-2016 |
| 20160168962 | Assembly and Method For Multi-Zone Fracture Stimulation of A Reservoir Using Autonomous Tubular Units | 06-16-2016 |
| 20160376878 | Projectile tool with rotatable blades - The present invention relates to a method and apparatus for firing and propelling one or more projectiles into an earthen or subterranean formation for the purpose of stimulating and enhancing communication between a well bore and said formation. | 12-29-2016 |
| 175400520 | With wall engaging packer or anchor | 1 |
| 20110011643 | PERFORATING AND FRACTURING SYSTEM - A system for use in borehole completion is provided and includes a perforating sub, a firing sub having a first port and an interior and including a firing assembly disposable within the interior and operably coupled to the perforating sub and a drilling fluid barrier, which is formed with a second port and is displaceable toward a position at which the first and second ports align to form a fluid path through the interior that is sufficiently pressurizable to actuate the firing assembly, a drop plug selectively engageable with the drilling fluid barrier to enable displacement thereof to the position in response to applied pressures and an isolation sub, into which the drop plug is receivable following disengagement thereof from the drilling fluid barrier. | 01-20-2011 |
| 175400540 | With bore condition firing control, or compensating means | 3 |
| 20130000979 | Perforating Gun Assembly and Method for Controlling Wellbore Pressure Regimes During Perforating - A method comprises: a. determining a configuration of a gun string, b. determining, by a computer, a pressure transient at a location in a wellbore, c. comparing the one or more pressures with the one or more pressure thresholds at the location, and d. perforating the wellbore with the gun string using the determined configuration of the gun string when the one or more pressures meet the one or more pressure thresholds at the location. The location in the wellbore has one or more pressure thresholds, and the pressure transient comprises one or more pressures. | 01-03-2013 |
| 20130199843 | INTERRUPTOR SUB, PERFORATING GUN HAVING THE SAME, AND METHOD OF BLOCKING BALLISTIC TRANSFER - An interruption sub for a downhole tool the downhole tool activatable by detonation. The interruption sub includes a barrier movable between a biased closed position and an open position. Preventing ballistic transfer to the downhole tool in the closed position and allowing ballistic transfer to the downhole tool in the open position. A detonation path within the interruption sub, wherein the barrier is hydraulically or electronically movable from the closed position to the open position in response to at least one condition acceptable for ballistic transfer. Also included is a downhole tool activatable by detonation. | 08-08-2013 |
| 20130277109 | Surface Safe Explosive Tool - An explosive tool comprises a body structure, a charge, a detonator to ignite the charge via propagation of thermal energy, a pressure actuated safety to prevent propagation of sufficient thermal energy to ignite the charge when the pressure actuated safety is subjected to a surface pressure and to not prevent propagation of sufficient thermal energy to ignite the charge when the pressure actuated safety is subjected to at least a predefined pressure threshold, and a temperature actuated safety to prevent propagation of sufficient thermal energy to ignite the charge when the temperature actuated safety is subjected to a surface temperature and to not prevent propagation of sufficient thermal energy to ignite the charge when the temperature actuated safety is subjected to at least a predefined temperature threshold. The charge, the detonator, the pressure actuated safety, and the temperature actuated safety are contained within the body structure. | 10-24-2013 |
| 175400550 | Independent firing of plural charges | 1 |
| 20120168226 | METHOD OF FABRICATION AND USE OF INTEGRATED DETONATORS - A detonator assembly is provided for use in oilfield operations to detonate an explosive downhole including a capacitor discharge unit and initiator electrically connected together to form a single unit. Further, provided is a method of fabricating an integrated detonator. Additionally, a method of use for an integrated detonating unit is provided. | 07-05-2012 |
| 175400560 | Firing control mechanically actuated in bore | 4 |
| 20100108378 | Perforation Tool with Switch - A perforation tool e.g. for perforation of a formation, a well or the like downhole by detonation of a charge. The perforation tool has at least one charge and at least one switch for detonation of the charge. The switch has a housing, at least one contact, a shaft having a first end with a fastening member enabling a slidable fastening of the shaft in a predetermined position in relation to the tool and a second end for extending into the housing, and a conductor provided on the shaft enabling an electrical current to be conducted between the contact and the for detonation of a charge when the shaft extends within the housing. | 05-06-2010 |
| 20100206633 | Pressure Cycle Operated Perforating Firing Head - Pressure cycle operated apparatus and methods. A method of actuating a firing head includes the steps of: reciprocably displacing an actuator piston of the firing head, the displacing step including the piston being alternately pressure balanced and unbalanced; and igniting a combustible material in response to the piston displacing step. A method of generating electricity includes: reciprocably displacing a piston, the displacing step including the piston being alternately pressure balanced and unbalanced; and generating electricity in response to the piston displacing step. A firing head includes an actuator piston separating at least two chambers; a check valve which permits one-way flow between the chambers; a flow restrictor which restricts flow between the chambers; a biasing device which biases the piston toward one of the chambers; and a firing pin releasing device which releases a firing pin in response to displacement of the piston. | 08-19-2010 |
| 20110088946 | PRESSURE CYCLE OPERATED PERFORATING FIRING HEAD - Pressure cycle operated apparatus and methods. A method of actuating a firing head includes the steps of: reciprocably displacing an actuator piston of the firing head, the displacing step including the piston being alternately pressure balanced and unbalanced; and igniting a combustible material in response to the piston displacing step. A method of generating electricity includes: reciprocably displacing a piston, the displacing step including the piston being alternately pressure balanced and unbalanced; and generating electricity in response to the piston displacing step. A firing head includes an actuator piston separating at least two chambers; a check valve which permits one-way flow between the chambers; a flow restrictor which restricts flow between the chambers; a biasing device which biases the piston toward one of the chambers; and a firing pin releasing device which releases a firing pin in response to displacement of the piston. | 04-21-2011 |
| 20150376993 | COILED TUBING CONNECTOR FOR DOWNHOLE TOOLS - A quick connection for coiled tubing run tools eases the assembly and disassembly while deploying such tools. The quick connection utilizes a locking collet and an inner mandrel with locking sleeve system. Such a quick connection does not require perfect alignment between mating pieces. | 12-31-2015 |
| 175400570 | Projectile forms bore | 12 |
| 20150300092 | Slow Drilling Assembly and Method - A wellbore tubular-conveyed drill assembly comprising a wellbore tubular, an electrical drilling mechanism coupled to an outside surface of the wellbore tubular, wherein the electrical drilling mechanism has a refracted position and an extended position, wherein the electrical drilling mechanism drills one or more openings in a subterranean formation when in the extended position, and a power source coupled to the electrical drilling mechanism. A method comprising extending an electrical drilling mechanism in a direction away from a wellbore tubular, wherein the electrical drilling mechanism is coupled to an outside surface of the wellbore tubular, and drilling one or more openings in a subterranean formation with the electrical drilling mechanism. | 10-22-2015 |
| 20150316359 | CHARGE CASE FRAGMENTATION CONTROL FOR GUN SURVIVAL - A method for forming a perforation is disclosed. The method comprises positioning a perforating gun at a desired location in the formation. The perforating gun comprises a gun body and a charge carrier. The method further comprises disposing one or more shaped charges within the charge carrier. The one or more shaped charges comprise an outer case, an inner liner, and an explosive material retained between the outer case and the inner liner. The outer case of the shaped charge comprises one or more predefined fracture lines. The method further comprises detonating at least one shaped charge, wherein detonating the at least one shaped charge forms one or more perforations in the formation. | 11-05-2015 |
| 20150376992 | METHODS OF CONTROLLING THE DYNAMIC PRESSURE CREATED DURING DETONATION OF A SHAPED CHARGE USING A SUBSTANCE - A method of controlling a dynamic pressure created during detonation of a shaped charge comprises: positioning the shaped charge in a wellbore, wherein the shaped charge comprises a main explosive load, wherein a substance is included in the main explosive load or is positioned adjacent to the main explosive load, wherein the substance increases or decreases the dynamic pressure or increases or decreases the duration of a pressure pulse created during detonation of the shaped charge; whereas a substantially identical shaped charge without the substance does not increase or decrease the dynamic pressure nor increase or decrease the duration of the pressure pulse during detonation. A method of controlling the balance of a portion of a wellbore comprises: positioning the shaped charge in the portion of the wellbore; and creating a desired balance in the portion of the wellbore. | 12-31-2015 |
| 20150377597 | Shaped Charge Liner with Nanoparticles | 12-31-2015 |
| 20160032654 | ENCAPSULATED EXPLOSIVES FOR DRILLING WELLBORES - Systems and methods for drilling operations may use encapsulated explosives to complement the performance of downhole cutting tools. An exemplary method may include drilling a wellbore penetrating a subterranean formation with a downhole cutting tool; circulating a drilling fluid in the wellbore, wherein the drilling fluid comprises a base fluid and an encapsulated explosive having an average diameter of about 10 nm to about 20 microns; triggering detonation of the encapsulated explosive; and detonating the encapsulated explosive proximal to a portion of the subterranean formation adjacent the downhole cutting tool. | 02-04-2016 |
| 20160047235 | CAPTURING DATA FOR PHYSICAL STATES ASSOCIATED WITH PERFORATING STRING - Certain aspects are directed to capturing data regarding physical states associated with a perforating string. In one aspect, a sensing tool is provided. The sensing tool includes at least one sensor and a processor positioned in an isolated chamber of the sensing tool. The processor samples data from the sensor at a first sampling rate associated with the deployment of a perforating string. The data is associated with at least one parameter with respect to the perforating string. The processor detects a trigger condition associated with a perforation operation of the perforating string. The processor switches to a second sampling rate in response to detecting the trigger condition. The second sampling rate is greater than the first sampling rate and is associated with the perforation operation. The processor samples data at the second sampling rate for a period of time in which the perforation operation is at least partially performed. | 02-18-2016 |
| 20160084048 | Cohesively Enhanced Modular Perforating Gun - Embodiments may take the form of a perforating gun of modular assembly. The perforating gun may include at least one centralizing member at an interface between a loading tube and a carrier. Among modular components, the gun may also include an initiator assembly module that is electrically coupled to a modular feedthrough with a connector. The insert and the centralizing member may enhance axial cohesiveness of the modular gun. A shock absorbing mount may be located within the carrier and may receiving the initiator assembly module to provide added axial cohesiveness to the modular gun. | 03-24-2016 |
| 20160090826 | HYBRID BIG HOLE LINER - A shaped-charge liner for a shaped-charge assembly is provided. The shaped-charge assembly includes a housing, a single liner, and explosive material between the housing and the liner. The single liner includes an apex portion constructed from a first material and a skirt portion made from a second material that is different than the first material. | 03-31-2016 |
| 20160123081 | RAM ACCELERATOR SYSTEM WITH RAIL TUBE - A ram accelerator device may utilize rails arranged within a guide tube that may be emplaced downhole. The rails may serve to direct a hypervelocity projectile along the length of the guide tube. The rails may carry utilities or provide other services to operate the system. For example, electrical wiring for power, control signaling, and so forth, may be placed within the rails. In another example, gasses may be delivered by the rails. | 05-05-2016 |
| 20160153239 | Method of Forming Lateral Boreholes From a Parent Wellbore | 06-02-2016 |
| 20160186536 | Coaxial perforating charge and its perforation method for self-eliminating compacted zone - A coaxial perforating charge includes a shaped charge and a container having a fracture explosive pack inside. The container is coaxially provided at a front end of the shaped charge; the fracture explosive pack is a ring-shaped explosive pack formed by impregnating a fracture explosive for eliminating a compacted zone into the container; the fracture explosive pack is coaxially arranged with the shaped charge. The fracture explosive includes ammonium perchlorate, aluminum powder, additive, and dioctyl sebacate; the additive is hydroxyl-terminated polybutadiene (HTPB), or a mixture of HTPB, N,N′-diphenyl-p-phenylenediamine and toluene di-isocyanate. A perforation method thereof, for self-eliminating a compacted zone, includes steps of: running a jet perforating gun downward; perforating while self-eliminating a compacted zone. The charge and its perforation method are reasonably designed, convenient, safe, reliable, well performed, and able to perforate while self-eliminating the compacted zone, which effectively eliminates an impact on rock permeability of the compacted zone. | 06-30-2016 |
| 20160376879 | Detonator Structure And System - A technique facilitates controlled detonation in well environments and other types of environments. Electronics for controlling detonation of a pellet of explosive material are mounted on a structure, such as a circuit board. The pellet is operatively coupled with the electronics and positioned to extend outwardly from the structure. Another explosive component is arranged across the pellet at a predetermined angle, e.g. a right angle, with respect to a longitudinal axis of the pellet. In well applications or other applications utilizing shaped charges, the explosive component may be coupled to the shaped charge via a detonator cord. | 12-29-2016 |
| 175400600 | Concave-shaped charge | 3 |
| 20090038846 | Perforating gun - An improved perforating gun having a tubular housing, a tubular carrier and a charge carried by the tubular carrier. The tubular carrier comprises an inside diameter, an outside diameter and an opening disposed between the inside diameter and the outside diameter. The charge comprises a forward end positioned in the opening between the inside diameter and the outside diameter. The tubular carrier increases a collapsible-pressure rating for the housing and positions the charge closer to the formation. | 02-12-2009 |
| 20100252323 | PROCESS FOR ASSEMBLING A LOADING TUBE - A process is disclosed for assembling a loading tube for a perforating gun for use in a perforating system. At a first location, e.g., a shop, which is not the location at which perforating operations will be conducted, the loading tube is completely assembled. The completely assembled loading tubing is then transported to a second location where perforating operations are to be conducted. In one embodiment, an RF-safe initiator, wiring, a detonating cord and a plurality of shaped charges are installed into the loading tube at a first location. The RF-safe initiators may comprise an exploding foil initiator or an exploding bridge wire. A process for assembling a loading tube for a single-shot perforating gun is also disclosed. | 10-07-2010 |
| 20160376877 | PERFORATING GUN FOR UNDERBALANCED PERFORATING - A perforating gun has shaped charges that can generate a high-pressure gas. A valve sub connects to the perforating gun and a reservoir sub connects to the valve sub. The valve sub has an enclosure with a port. A mandrel in the enclosure has a piston head and a fluid path extending at least partially through the mandrel. A sleeve is slidably mounted on the mandrel and selectively blocks fluid flow through the port. A pressure chamber in the sleeve receives the generated high-pressure gas via the fluid path. The sleeve slides toward the perforating gun after a predetermined pressure is created by the generated high-pressure gas in the pressure chamber. The reservoir sub may have at least one chamber in fluid communication with the interior of the valve sub. | 12-29-2016 |
