Perforating, Weakening, Bending Or Separating Pipe At An Unprepared Point Patents (Class 166/297)
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Publication number: 20120318507Abstract: A method and apparatus for completing a horizontal hydrocarbon well includes cementing a casing string in the well and creating passages through the casing string adjacent float equipment near the casing toe by slowly dissolving a plug with completion fluid used to pump cement into an annulus between the casing string and bore hole. By the time the cement sets up, the plug dissolves leaving passages in the casing string through which a first frac job may be pumped or which allows pumping perforating equipment into the horizontal leg without requiring a coiled tubing run. The technique can also be used in vertical wells to save a perforating gun run.Type: ApplicationFiled: June 17, 2011Publication date: December 20, 2012Inventor: W. Lynn Frazier
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Publication number: 20120318508Abstract: A perforation tool assembly is provided. The perforation tool assembly comprises an energy train, a first perforation gun, and a second perforation gun. The energy train comprises a moderator to reduce the speed of propagation of a detonation in a direction parallel to the axis of the perforation tool assembly. The first perforation gun comprises a plurality of explosive charges coupled to a first portion of the energy train. The second perforation gun comprises a plurality of explosive charges coupled to a second portion of the energy train, wherein the second portion of the energy train is coupled to the first portion of the energy train.Type: ApplicationFiled: August 25, 2012Publication date: December 20, 2012Applicant: HALLIBURTON ENERGY SERVICES, INC.Inventors: Timothy S. Glenn, John P. Rodgers, Jeff A. Nelson, John D. Burleson, Marco Serra, John H. Hales
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Patent number: 8327926Abstract: A method for providing a torch apparatus into a well bore for providing heat to a material that includes the step of inserting the torch apparatus into the well bore, such that a plurality of slots along the torch apparatus are oriented to provide the heat and a source of oxygen to the material. The method further includes igniting a fuel load of the torch apparatus to provide the heat and the source of oxygen through the plurality of slots to the material so that the portion of the material is at least partially consumed. The interstitial spaces between the plurality of slots allow longitudinal flow of heat and the source of oxygen along the torch apparatus without interfering with the flow of heat and the source of oxygen through the slots.Type: GrantFiled: August 13, 2008Date of Patent: December 11, 2012Assignee: Robertson Intellectual Properties, LLCInventor: Michael C. Robertson
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Publication number: 20120298361Abstract: A system and method of perforating by stacking a perforating string within a wellbore, then deploying the perforating string to a designated depth for detonating shaped charges in the perforating string. The string can be formed by anchoring a single perforating gun in the wellbore, then landing subsequent guns on one another atop the anchored gun. Wet connects on the ends of the perforating guns enable mechanical engagement of each adjacent gun as well as signal communication through the connections.Type: ApplicationFiled: May 26, 2011Publication date: November 29, 2012Applicant: BAKER HUGHES INCORPORATEDInventor: Tim W. Sampson
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Publication number: 20120292027Abstract: A cut and pull spear is configured to obtain multiple grips in a tubular to be cut under tension. The slips are set mechanically with the aid of drag blocks to hold a portion of the assembly while a mandrel is manipulated. An annular seal is set in conjunction with the slips to provide well control during the cut. An internal bypass around the seal can be in the open position to allow circulation during the cut. The bypass can be closed to control a well kick with mechanical manipulation as the seal remains set. If the tubular will not release after an initial cut, the spear can be triggered to release and be reset at another location. The mandrel is open to circulation while the slips and seal are set and the cut is being made. Cuttings are filtered before entering the bypass to keep the cuttings out of the blowout preventers.Type: ApplicationFiled: May 16, 2011Publication date: November 22, 2012Applicant: BAKER HUGHES INCORPORATEDInventors: Stephen L. Crow, Marcelle H. Hedrick, Erik V. Nordenstam, Christopher W. Guidry
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Publication number: 20120292028Abstract: A cut and pull spear is configured to obtain multiple grips in a tubular to be cut under tension. The slips are set mechanically with the aid of drag blocks to hold a portion of the assembly while a mandrel is manipulated. An annular seal is set in conjunction with the slips to provide well control during the cut. An internal bypass around the seal can be in the open position to allow circulation during the cut. The bypass can be closed to control a well kick with mechanical manipulation as the seal remains set. If the tubular will not release after an initial cut, the spear can be triggered to release and be reset at another location. The mandrel is open to circulation while the slips and seal are set and the cut is being made. Cuttings are filtered before entering the bypass to keep the cuttings out of the blowout preventers.Type: ApplicationFiled: May 16, 2011Publication date: November 22, 2012Applicant: BAKER HUGHES INCORPORATEDInventors: Stephen L. Crow, Marcelle H. Hedrick, Erik V. Nordenstam, Christopher W. Guidry
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Patent number: 8307900Abstract: The disclosure, in on aspect, provides a method for performing a laser operation in a wellbore that includes displacing a wellbore fluid with a laser-compatible medium proximate a location in the wellbore where a work is desired to be performed; positioning a laser head proximate the laser-compatible medium; and passing a laser beam via the laser-compatible medium to the location for performing the laser operation. In another aspect, the disclosure provides a laser apparatus for performing a laser operation at a worksite having a fluid that includes a laser power unit that supplies laser energy to a laser head placed proximate the worksite; a fluid displacement unit that displaces at least a portion of the fluid adjacent the worksite with a laser-compatible medium; and a controller that operates the laser head to pass the laser beam to the worksite through the laser-compatible medium. In another aspect, the disclosure provides an imager associated with the laser apparatus that provides images of the worksite.Type: GrantFiled: January 10, 2007Date of Patent: November 13, 2012Assignee: Baker Hughes IncorporatedInventors: Gerald D. Lynde, Joseph P. DeGeare
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Patent number: 8302693Abstract: A free falling drop sub carries an explosive tool such as a shaped charge pipe cutter or well perforator. The drop sub includes an aperture plugging element to isolate an upper pipe string from a lower pipe string. An upper pipe string fluid pressure actuated valve element retained by shear pins is released to admit the upper string pressure against a pressure displaced firing pin. Displacement of the firing pin initiates detonation of the explosive tool.Type: GrantFiled: April 5, 2012Date of Patent: November 6, 2012Inventors: Don Umphries, Gabe Williger
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Publication number: 20120273201Abstract: A perforation tool assembly is provided. The perforation tool assembly comprises an energy train, a first perforation gun, and a second perforation gun. The energy train comprises a moderator to reduce the speed of propagation of a detonation in a direction parallel to the axis of the perforation tool assembly. The first perforation gun comprises a plurality of explosive charges coupled to a first portion of the energy train. The second perforation gun comprises a plurality of explosive charges coupled to a second portion of the energy train, wherein the second portion of the energy train is coupled to the first portion of the energy train.Type: ApplicationFiled: April 29, 2011Publication date: November 1, 2012Applicant: HALLIBURTON ENERGY SERVICES, INC.Inventors: Timothy S. Glenn, John P. Rodgers, Jeff A. Nelson, John D. Burleson, Marco Serra, John H. Hales
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Patent number: 8286706Abstract: 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.Type: GrantFiled: March 26, 2010Date of Patent: October 16, 2012Assignee: Baker Hughes IncorporatedInventors: Jason W. McCann, Mark Sloan
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Publication number: 20120247769Abstract: A system can include multiple explosive assemblies, each assembly comprising an outer housing, an explosive component rotatable relative to the housing, and a selective firing module which causes detonation of the component in response to a predetermined signal. A method can include assembling multiple explosive assemblies at a location remote from a well, installing a selective firing module, an electrical detonator and an explosive component in a connector, and connecting the connector to an outer housing, and then transporting the assemblies from the remote location to the well. A well perforating method can include assembling multiple perforating guns, each gun comprising a gun body, a perforating charge, and a selective firing module which causes detonation of the charge in response to a predetermined signal. The guns are installed in a wellbore, with the charge of each gun rotating relative to the respective gun body.Type: ApplicationFiled: April 1, 2011Publication date: October 4, 2012Applicant: HALLIBURTON ENERGY SERVICES, INC.Inventors: Timothy G. SCHACHERER, Marvin G. BATRES, Tommy THAMMAVONGSA, Randall S. MOORE
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Publication number: 20120247770Abstract: A method of controlling a blowout comprises: releasing at least a first tubing string into a portion of a well system, wherein the step of releasing comprises activating a release table; and causing or allowing a blowout preventer to close. The methods further comprise: compressing at least a portion of a second tubing string and a third tubing string together, wherein the step of compressing comprises activating a crimping device; cutting through the wall of at least a third tubing string, wherein the step of cutting comprises activating a cutting device, and wherein the step of cutting is performed after the step of compressing; and releasing at least the second tubing string and the third tubing string into a portion of a well system, wherein the step of releasing comprises activating a release table.Type: ApplicationFiled: February 13, 2012Publication date: October 4, 2012Applicant: HALLIBURTON ENERGY SERVICES, INC.Inventors: Thomas Owen ROANE, Andrew David PENNO, Patrick Patchi BOURGNEUF
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Publication number: 20120247771Abstract: The perforating gun and methods of arming a perforating gun facilitates electrically connecting an arming device carrying the detonator to the loading tube carrying the explosive charges prior to ballistically connecting the arming device to the loading tube. Subsequent to establishing electrical continuity across the loading tube and arming device, the arming device can be ballistically connected to the loading tube thereby arming the perforating gun.Type: ApplicationFiled: March 23, 2012Publication date: October 4, 2012Inventors: Francois Black, Billy Anthony
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Patent number: 8276656Abstract: A perforating gun, according to one or more aspects of the present disclosure, comprises a loading tube and a plurality of charges mounted in the loading tube with at least a portion of the plurality of charges being tilted relative to an axis of the loading tube. Wherein the plurality of tilted charges are tilted relative to the axis to create a selected reactive dynamic force on the perforating gun to counter a detrimental force on the perforating gun in response to detonation of the plurality of charges.Type: GrantFiled: December 21, 2007Date of Patent: October 2, 2012Assignee: Schlumberger Technology CorporationInventor: Kenneth R. Goodman
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Patent number: 8272441Abstract: A system for positioning a downhole tool along a pipe string, the system having a series of seating subs inserted along the length of the pipe string wherein each seating sub has a seating aperture disposed around its internal periphery so as to form a bore plug seat of smaller diameter than the diameter of the pipe. The seating apertures are given distinctive diameters that are consecutively arranged along the pipe string length so that the aperture diameters decrease with increasing depth. A drop assembly having an aperture plugging diameter selected to pressure seal a selected aperture includes a bore pressure activated by-pass valve and firing head.Type: GrantFiled: July 19, 2011Date of Patent: September 25, 2012Inventors: Don Umphries, Gabe Williger
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Publication number: 20120234542Abstract: A method for performing an operation in the wellbore may include at least partially separating a wellbore tubular while reducing a compression in a section of the wellbore tubular using a force applicator in the wellbore. An apparatus for performing the downhole operation may include a cutter configured to at least partially sever a wellbore tubular; and a force applicator configured to reduce a compression in a section of a wellbore tubular proximate to the cutter.Type: ApplicationFiled: March 15, 2012Publication date: September 20, 2012Applicant: BAKER HUGHES INCORPORATEDInventor: Alan L. McFall
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Patent number: 8256516Abstract: A system and a method provide a downhole mechanical energy absorber that protects downhole tools from impact loads and shock loads that occur during run-in contacts, tool drops, perforating blasts, and other impact events. A continuous localized inelastic deformation of a tube is a primary energy absorber in a load limiting design of the downhole mechanical energy absorber.Type: GrantFiled: May 20, 2009Date of Patent: September 4, 2012Assignee: Starboard Innovations, LLCInventor: John P. Rodgers
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Patent number: 8245770Abstract: By using reactive shaped charges to perforate failure prone formations, the present invention is able to keep formation sand in place and increase productivity. An efficient flow distribution is surprisingly produced without requiring surge flow or post-perforation stimulation. Further, using the secondary reactive effects of reactive shaped charges allows for the reduction of the risk of erosion and minimization of sand production. In a preferred embodiment, a liner capable of producing a strongly exothermic intermetallic reaction between liner components within and around the tunnel is used to achieve a high percentage of substantially clean and enlarged perforation tunnels conducive to flow or gravel packing.Type: GrantFiled: November 30, 2009Date of Patent: August 21, 2012Assignee: Geodynamics, Inc.Inventors: Matthew Robert George Bell, David S. Wesson, Nathan Garret Clark, John Thomas Hardesty
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Publication number: 20120199351Abstract: A method for providing a torch apparatus into a well bore for providing heat to a material that includes the step of inserting the torch apparatus into the well bore, such that a plurality of slots along the torch apparatus are oriented to provide the heat and a source of oxygen to the material. The method further includes igniting a fuel load of the torch apparatus to provide the heat and the source of oxygen through the plurality of slots to the material so that the portion of the material is at least partially consumed. The interstitial spaces between the plurality of slots allow longitudinal flow of heat and the source of oxygen along the torch apparatus without interfering with the flow of heat and the source of oxygen through the slots.Type: ApplicationFiled: August 13, 2008Publication date: August 9, 2012Inventor: Michael C. Robertson
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Publication number: 20120199352Abstract: A cartridge assembly for use with a perforating system having a contact terminal that connects to a perforating signal line when inserted into a receptacle end of a perforating gun. A detonator may be included in an end of the cartridge assembly for initiating a detonating cord in the perforating gun. The cartridge assembly is a modular unit that replaces the manual connections made when assembling a string of perforating guns. The cartridge assembly may optionally include a controller switch for controlling current flow through the cartridge assembly.Type: ApplicationFiled: February 3, 2012Publication date: August 9, 2012Applicant: Baker Hughes IncorporatedInventors: Ronald Lanclos, James Weekley, Jason McCann, Mark Sloan
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Patent number: 8235102Abstract: A torch apparatus for consuming a material having a fuel load that produces heat and a source of oxygen when burned, and a plurality of slots having interstitial spaces therebetween for allowing longitudinal flow of fluid along the torch apparatus without interfering with the flow of fluid through the slots. The slots are oriented such that the heat and source of oxygen are provided to a material that is at least partially consumed when exposed to heat and oxygen, to thereby cause destruction of an object containing the material or disengagement of the object such that it falls into the wellbore.Type: GrantFiled: August 13, 2008Date of Patent: August 7, 2012Assignee: Robertson Intellectual Properties, LLCInventor: Michael C. Robertson
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Publication number: 20120186816Abstract: Disclosed systems and methods provide well creation in a single trip. Some system embodiments include: a casing string having a distal end with a latch assembly; and a drillstring latched within the casing string by the latch assembly, the drillstring having at least one tool for perforation and stimulation. A pressure while drilling tool and one or more packers may be provided in the drillstring to further enable the stimulation operation. Prior to perforation, the casing string is cemented in place via a cement valve, and the drillstring is unlatched and raised to the desired completion position. The perforation and stimulation process can be repeated to provide multiple completions. The drillstring can be removed from the borehole or seated in place to control production. Logging instruments can be included for steering and/or use in making completion decisions.Type: ApplicationFiled: October 4, 2010Publication date: July 26, 2012Applicant: Halliburton Energy Services, Inc.Inventors: Ron Dirksen, Kehinde Samuel Adesina, Mark Edward Keller
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Publication number: 20120181026Abstract: A method of adjusting a pressure reduction to occur in a wellbore following firing of at least one perforating gun can include determining a desired free gun volume which corresponds to a desired pressure reduction in the wellbore resulting from firing of the perforating gun, and varying a free gun volume of the perforating gun until the free gun volume is substantially the same as the desired free gun volume. A well system can include at least one perforating gun positioned in a wellbore, the perforating gun comprising multiple perforating charges and a free gun volume, and the free gun volume being reduced by presence of a flowable material about the multiple perforating charges.Type: ApplicationFiled: January 6, 2012Publication date: July 19, 2012Applicant: HALLIBURTON ENERGY SERVICES, INC.Inventors: Cam LE, Dennis J. HAGGERTY
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Patent number: 8215397Abstract: A system for dynamic underbalanced perforation of a hydrocarbon well includes a perforation fluid located within the hydrocarbon well. A perforation gun is suspended within the perforation fluid and a completion fluid is located within the hydrocarbon uphole of the perforation fluid. An isolation fluid is located within the hydrocarbon well uphole of the perforation fluid and downhole of the completion fluid. A method of perforating a hydrocarbon well includes a perforation fluid placed in the hydrocarbon well. A perforation gun is placed within the perforation fluid. A completion fluid is placed in the hydrocarbon well. An isolation fluid is placed in the hydrocarbon well. A local dynamic underbalance condition is created in the hydrocarbon well. A flow of the completion fluid downhole is inhibited.Type: GrantFiled: December 30, 2009Date of Patent: July 10, 2012Assignee: Schlumberger Technology CorporationInventor: Martin Griffith
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Publication number: 20120168162Abstract: A shaped charge assembly for use in a perforating gun that further comprises a charge carrier, and gun housing. The charge carrier substantially encapsulates the closed portion of the shaped charge and extends from the outer periphery of the shaped charge to the inner diameter of the associated gun housing. Encapsulating the shaped charge substantially reduces the introduction of debris into the wellbore resulting from detonation of the perforating gun shaped charges. The charge carrier can include a multiplicity of shaped charges therein.Type: ApplicationFiled: July 13, 2006Publication date: July 5, 2012Inventors: Timothy Sampson, Anna Schwartz, Mark Sloan, Avigdor Hetz, Jason McCann
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Publication number: 20120168150Abstract: Disclosed are plasma charges and methods for using plasma charges in completing a well.Type: ApplicationFiled: December 14, 2011Publication date: July 5, 2012Inventor: Hongfa Huang
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Publication number: 20120168163Abstract: An apparatus includes a string that extends into a well and a tool that is disposed in the string. The tool is adapted to form a seat to catch an object communicated to the tool via a passageway of the string in response to the tool being perforated.Type: ApplicationFiled: August 3, 2011Publication date: July 5, 2012Inventors: Michael J. Bertoja, Robert A. Parrott, Bruno Lecerf, Vitaliy Timoshenko, Sergey Balakin, Elena Tarasova, Gary Rytlewski, Billy Anthony
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Publication number: 20120160492Abstract: A shaped charge includes a casing; a liner located within an opening of the casing; and an explosive located in the region between the casing and the liner, wherein at least one of the liner and the explosive comprises an intermetallic mixture comprising boron and a reactant metal. The reactant metal is one selected from the group consisting of Ti, Mg, Zr, Mo, and a combination thereof. A method for perforating in a well includes positioning a perforating gun in the well, wherein the perforating gun includes a shaped charge that includes: a casing; a liner located within an opening of the casing; and an explosive located in the region between the casing and the liner, wherein at least one of the liner and the explosive includes an intermetallic mixture that contains boron and a reactant metal; and detonating the shaped charge in the well.Type: ApplicationFiled: December 16, 2011Publication date: June 28, 2012Inventors: Timothy A. Andrzejak, Claude Dewayne Jones
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Publication number: 20120160491Abstract: A perforating gun includes a plurality of shaped charges located at a first distance from a detonator along a plurality of detonating cords and forming a first group, wherein the first group of shaped charges is configured to be detonated simultaneously. The plurality of detonating cords are of the same length.Type: ApplicationFiled: December 12, 2011Publication date: June 28, 2012Inventors: Kenneth R. Goodman, Steven W. Henderson
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Publication number: 20120152542Abstract: A formation testing method can include interconnecting multiple pressure sensors and multiple perforating guns in a perforating string, the pressure sensors being longitudinally spaced apart along the perforating string, firing the perforating guns and the pressure sensors measuring pressure variations in a wellbore after firing the perforating guns. Another formation testing method can include interconnecting multiple pressure sensors and multiple perforating guns in a perforating string, firing the perforating guns, thereby perforating a wellbore at multiple formation intervals, each of the pressure sensors being positioned proximate a corresponding one of the formation intervals, and each pressure sensor measuring pressure variations in the wellbore proximate the corresponding interval after firing the perforating guns.Type: ApplicationFiled: December 8, 2011Publication date: June 21, 2012Applicant: HALLIBURTON ENERGY SERVICES, INC.Inventor: Cam LE
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Publication number: 20120138302Abstract: A device for well stimulation comprising a carrying element (22) with a first delimiting element (23) and a second delimiting element (25), also at least one charge pack (30), which comprises one or more charge units (31) of a solid fuel, and also at least one detonator (40) for detonating the at least one charge pack (31), the charge pack or the charge packs being arranged on the carrying element (22) between the delimiting elements (23, 25), wherein the charge units (31) are configured as cylinders with a continuous axial clearance, and the carrying element (22) is formed as a rod or cable and is led through the axial clearances.Type: ApplicationFiled: November 30, 2011Publication date: June 7, 2012Applicant: WINTERSHALL HOLDING GMBHInventor: Vladimir STEHLE
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Publication number: 20120138301Abstract: A multilateral completions assembly having selectively isolated lateral legs during hardware installation. The assembly includes a variety of isolation sleeves disposed interior of the main bore casing and adjacent corresponding pre-located windows through the casing. Thus, lateral legs may be sequentially created through the formation at each window in a manner that allows for follow-on isolation. As a result, fluid losses from newly formed legs may be avoided during completions operations. That is, as each leg is formed it may also be isolated in advance of forming of the next leg thereby enhancing the efficiency of completions operations as well as follow-on production.Type: ApplicationFiled: August 1, 2011Publication date: June 7, 2012Applicant: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Anwar Ahmed Maher Assal, Nabil Batita
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Patent number: 8181699Abstract: A cutting assembly for external conduits on a tubing string features a breakaway in the string that can be severed with a tensile force. Preferably each external conduit is run through a cutter housing. Upon severing of the string and applying a pickup force, a tension is applied to each external conduit since the severing of the string happens above all the cutter housings. Each housing cuts at least one conduit and the upper portion of the string brings with it the upper portion of the external conduit while the lower portions of each cut external conduit are retained in the cutter housings that remain downhole below the breakaway. In that manner there are no loose external conduit ends to interfere with and/or disturb subsequent fishing or other wellbore operations.Type: GrantFiled: May 20, 2009Date of Patent: May 22, 2012Assignee: Baker Hughes IncorporatedInventors: Anthony C. Zavesky, Steven G. Blair, Christopher W. Guidry, Steve Rosenblatt
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Publication number: 20120118569Abstract: An oxygen scavenger for completion brines effective and stable in high temperature subterranean formations. In one embodiment, the scavenger contains erythorbate and alkylhydroxlyamine.Type: ApplicationFiled: November 16, 2010Publication date: May 17, 2012Inventor: Jay Paul Deville
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Publication number: 20120118568Abstract: A method for wellbore perforation in which a section of the wellbore to be perforated is isolated and purged of wellbore fluid to provide a clear path for laser beam transmittal. A laser beam emitter in the purged wellbore section transmits a laser beam pulse from the laser beam emitter to a target area of a sidewall and formation lithology of the purged wellbore section, thereby altering a mechanical property of a material of the sidewall and formation lithology and producing material debris. A liquid jet pulse of a liquid is transmitted immediately following termination of the laser beam pulse to the target area, thereby removing the material debris from the target area. This cycle is then repeated until the desired perforation depth has been achieved.Type: ApplicationFiled: November 11, 2010Publication date: May 17, 2012Applicants: HALLIBURTON ENERGY SERVICES, INC., GAS TECHNOLOGY INSTITUTEInventors: Mark Kleefisch, Colin Hawthorn, Henry David Reynolds, Neal Gregory Skinner, Jim Basuki Surjaatmadja, Roger Lynn Schultz, Timothy Holiman Hunter
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Publication number: 20120118570Abstract: There is described a device for machining apparatus arranged for machining of a portion of a casing positioned in a wellbore, wherein a return fluid conduit extends from the machining apparatus in a direction toward a deposit area arranged in the wellbore. Also described is a method for machining of a portion of a casing positioned in a wellbore, wherein the method comprises the steps of: arranging a return fluid conduit between a machining apparatus and a deposit area or an area connected to the deposit area, providing a particle carrying liquid flow (M) in a direction from the machining apparatus and toward the deposit area, during the machining of the casing leading metal shavings into the liquid flow (M), and directing the liquid flow (M) into the return fluid conduit, as the metal shavings are held back and deposited in the wellbore.Type: ApplicationFiled: April 12, 2010Publication date: May 17, 2012Applicant: West Production Technology ASInventors: Helge Krohn, Mads Grinrod
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Publication number: 20120111566Abstract: A method of stimulating a subterranean formation using a tubular member with one or more burst disks therein.Type: ApplicationFiled: June 22, 2010Publication date: May 10, 2012Applicant: TRICAN WELL SERVICE LTD.Inventors: Scott Sherman, Robert Pugh, Sean Majko, Steve Scherschel
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Publication number: 20120103612Abstract: A system for opening a window in a casing string (42) positioned in a wellbore (32). The system includes a hydraulic pressure intensifier (116) having a housing and a piston assembly with a differential piston area. The piston assembly is longitudinally shiftable relative to the housing and is initially secured relative thereto to prevent longitudinal movement therebetween. An anchor assembly (114) is operable to longitudinally secure the hydraulic pressure intensifier (116) within the casing string (42). A window opening tool (118) operably associated with the hydraulic pressure intensifier (116) is operably engagable with the casing string (42) such that when the anchor assembly (114) is longitudinally secured within the casing string (42) and the piston assembly is unsecured relative to the housing under hydrostatic pressure, longitudinal movement of the piston assembly transmits a force to the window opening tool (118), thereby opening the window in the casing string (42).Type: ApplicationFiled: October 29, 2010Publication date: May 3, 2012Applicant: HALLIBURTON ENERGY SERVICES, INC.Inventors: Thomas Owen Roane, Stuart Alexander Telfer
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Patent number: 8167044Abstract: 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.Type: GrantFiled: December 16, 2009Date of Patent: May 1, 2012Assignee: Sclumberger Technology CorporationInventors: Hongfa Huang, Brenden M. Grove, Philip Kneisl
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Publication number: 20120073815Abstract: Techniques for shearing a tubular of a wellbore penetrating a subterranean formation with a blowout preventer are provided. The blowout preventer has a housing with a hole therethrough for receiving the tubular. The techniques relate to a blade assembly including a ram block movable between a non-engagement position and an engagement position about the tubular, a blade carried by the ram block for cuttingly engaging the tubular, and a retractable guide carried by the ram block and slidably movable therealong. The restractable guide has a guide surface for urging the tubular into a desired location in the blowout preventer as the ram block moves to the engagement position.Type: ApplicationFiled: September 28, 2011Publication date: March 29, 2012Applicant: NATIONAL OILWELL VARCO, L.P.Inventors: FRANK BENJAMIN SPRINGETT, CHRISTOPHER DALE JOHNSON, SHERN EUGENE PETERS, ERIC TREVOR ENSLEY
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Patent number: 8136584Abstract: A tubing punch and setting tool (TPST), operating on a single run for improved well bore intervention. The tool includes a setting tool for connecting to and setting a reference tool in a tubing string, a punch tool for punching holes in the tubing string wall, and actuation means to trigger the sequencing of the setting tool and the punch tool. The tool can be run on wireline, e-line or coiled tubing and allows a reference tool to be run and set on the same trip as punching holes in the tubing string. The reference tool can be an anchor tool. With the distance known accurately between the anchor tool and the punched holes, a shortened retrofit gas lift straddle can be deployed.Type: GrantFiled: January 29, 2009Date of Patent: March 20, 2012Assignee: Red Spider Technology LimitedInventors: William Stephen Burnett, Irvine Cardno Brown
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Patent number: 8136608Abstract: A wellbore tool string includes a perforating gun having a plurality of explosive perforating charges and a shock mitigation tool. The shock mitigation tool including a tubular body having a top end, a bottom end, and a chamber; a barrier disposed proximate the bottom end in communication with the chamber; and a plurality of actuators connected with the body proximate to the top end of the body, each actuator opening a port in the body providing fluid communication with the chamber when the plurality of actuators are activated.Type: GrantFiled: December 16, 2008Date of Patent: March 20, 2012Assignee: Schlumberger Technology CorporationInventor: Kenneth Goodman
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Patent number: 8127832Abstract: Methods and apparatus for stimulating oil or gas wells using material cemented outside the casing. Reaction agents, usually comprising oxygen-rich material and a coil of high order explosive, are positioned around the outside of the well casing at a desired level in a carrier and reacted later. The stimulation operation is initiated by firing a shaped charge into the high order explosive material. The combination of the explosive force of the high order explosive and burning of the oxygen-rich material fractures and cleans the formation adjacent to the well casing. The reaction agents may be provided in a sleeve supported on the casing joint at the time it is inserted into the well. In another embodiment, all components would be cemented externally to the casing and reacted remotely by a coded signal.Type: GrantFiled: September 23, 2010Date of Patent: March 6, 2012Inventor: Lesley O. Bond
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Patent number: 8127846Abstract: A method and system for cementing and perforating a wellbore in a single step by coupling a perforating gun with a wiper plug. The method includes injecting cement in a wellbore having casing therein and an annulus between the casing and wellbore. A wiper plug is dropped on the cement having a perforating gun attached to the wiper plug. The plug is forced downward pulling the perforating gun along. The downward motion of the plug in turn pushes the cement out the bottom end of the casing and into the annulus. The cement in the annulus is allowed to set and the perforating gun is activated.Type: GrantFiled: February 27, 2009Date of Patent: March 6, 2012Assignee: Baker Hughes IncorporatedInventors: Freeman L. Hill, Randy L. Evans, John H. Clark, Mark L. Sloan, William D. Myers, Jr., Joseph Gregory Barolak, George Patton
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Patent number: 8130118Abstract: A system is disclosed as having first and second tubular tool string components. Each component has a first end and a second end, and the first end of the first component is coupled to the second end of the second component through mating threads. First and second inductive coils are disposed within the first end of the first component and the second end of the second component, respectively. Each inductive coil has at least one turn of an electrical conductor, and the first coil is in magnetic communication with the second coil. The first coil has more turns than the second coil.Type: GrantFiled: April 29, 2009Date of Patent: March 6, 2012Assignee: Schlumberger Technology CorporationInventors: David R Hall, Scott Dahlgren, Paul Schramm
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Patent number: 8127848Abstract: A method of perforating a wellbore by forming a perforation that is aligned with a reservoir characteristic, such as direction of maximum stress, lines of constant formation properties, and the formation dip. The wellbore can be perforated using a perforating system employing a shaped charge, a mechanical device, or a high pressure fluid. The perforating system can be aligned by asymmetric weights, a motor, or manipulation from the wellbore surface.Type: GrantFiled: March 26, 2009Date of Patent: March 6, 2012Assignee: Baker Hughes IncorporatedInventors: William D. Myers, Jr., Randy L. Evans
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Publication number: 20120043083Abstract: The disclosure provides a blowout preventer (BOP) system with a ram having a shear blade with a shear blade profile to shear a tubular member disposed in the BOP. The shear blade profile can include a stress concentrator and centering shaped surface. The stress concentrator and the centering shaped surface can be laterally offset from a centerline of ram travel and on opposite sides of the centerline. An opposing second shear blade can have a mirror image of the shear blade profile with the stress concentrator and centering shaped surface reversed to the orientation of the first shear blade. Further, the ram can include a mandrel with a mandrel profile for the tubular member to deform around during the shearing process and to reduce an overall lateral width of the sheared tubular member in the BOP through-bore to allow retrieval of the deformed sheared tubular member from the BOP.Type: ApplicationFiled: August 12, 2011Publication date: February 23, 2012Applicant: T-3 PROPERTY HOLDINGS, INC.Inventor: Douglas JAHNKE
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Publication number: 20120037366Abstract: One or more burst disks, for isolating downhole communication between a tubular and a hydrocarbon-bearing formation, are fit with a shaped explosive charge. Detonation of the shaped charge is initiated by the rupture of the burst disk. In a system for stimulating the formation, one or more sets of two or more shaped charge, enhanced burst disks are located at a location along the tubular corresponding to a selected interval for stimulation. The enhanced burst disks can be fit with a chamber of known pressure for establishing a known and significant pressure differential across the burst disk for enabling substantially simultaneous rupture at the selected interval.Type: ApplicationFiled: August 9, 2011Publication date: February 16, 2012Applicant: TRICAN WELL SERVICE LTD.Inventor: Scott SHERMAN
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Publication number: 20120037365Abstract: A perforating gun designed to orient a charge holding structure (e.g., tube, solid rod) within a barrel of the perforating gun to be at the same position relative to a wellbore casing regardless of a position of the barrel of the perforating gun. A charge assembly receivable within the barrel includes the charge holding structure and first and second end caps that are rotatably interconnected to the charge holding structure and non-rotatably interconnected to the barrel. As the charge holding structure is always or substantially always designed to maintain a common orientation in relation to the wellbore casing, explosive charges associated with the charge holding structure so as to fire towards particular location on the wellbore casing may always or substantially always perforate such particular locations upon or after the explosive charges have fired.Type: ApplicationFiled: November 29, 2010Publication date: February 16, 2012Applicant: CCS Leasing and Rental, LLCInventors: Manuel Torres, Darwin Holte
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Publication number: 20120018157Abstract: A ballistic transfer delay device and method of use. The ballistic transfer delay device does not include a firing pin and it is not pressure initiated. The device comprises a time delay fuse, a through-bulkhead initiator to initiate the time delay fuse, and an output booster to ballistically transfer the energy from the initiated time delay fuse.Type: ApplicationFiled: July 6, 2011Publication date: January 26, 2012Applicant: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Bennie C. Gill, Steven W. Henderson