With Central Conduit And Fluid Port To Space Outside Patents (Class 166/185)
  • Patent number: 9670730
    Abstract: A method is for establishing a new well path from an existing well, wherein the existing well, at least in a portion where the new well path is to be established, is delineated radially by a casing.
    Type: Grant
    Filed: February 13, 2013
    Date of Patent: June 6, 2017
    Assignee: Hydra Systems AS
    Inventors: Arne Gunnar Larsen, Patrick Andersen, Roy Inge Jensen, Arnt Olav Dahl, Morten Myhre
  • Patent number: 9560120
    Abstract: A deploy service is provided to determine a set of software artifacts that needs to be transmitted to a target machine upon receiving an application deployment request from a user of a client device. For instance, the deploy service may compare versions of software artifacts on the target machine with the software artifacts of the application that the user desires to deploy to determine the set of software artifacts that needs to be transmitted. Instead of having to transmit the entire application, some embodiments transmit only a small portion that is reflective of what has been changed between the old version of the application and the new version of the application. This enables the transfer of large files across the Internet to be more efficient.
    Type: Grant
    Filed: May 8, 2015
    Date of Patent: January 31, 2017
    Assignee: Amazon Technologies, Inc.
    Inventors: Nicholas A. Allen, Elena Dykhno
  • Patent number: 9546313
    Abstract: Magnesium oxysulfate cement compositions and methods for controlling and preventing fluid and gas flow through a wellbore are described. The compositions and methods may be implemented to provide a barrier to fluid and gas flow between casings or in other operations such as squeeze operations. Magnesium oxysulfate cement compositions may include an admixture of magnesium oxide, magnesium sulfate trihydrate and water. When admixed with water, the compositions rapidly transition from a flowable state to a solid state with formation of little or no gel strength before the transition and further have a near-linear relationship between the time required for the transition to occur and the composition temperature at which the transition occurs enabling the user to determine the time within which the transition will occur. Additives, such as accelerators and inhibitors can be added to modify the time in which the compositions make the transition from flowable state to solid state.
    Type: Grant
    Filed: December 13, 2013
    Date of Patent: January 17, 2017
    Inventor: Brian Henry Tomlinson
  • Patent number: 9470062
    Abstract: A downhole tool for use in a wellbore and that is attached to a perforating string that creates perforations in a portion of the wellbore. Where the downhole tool can selectively flow fluid from the perforating string to surface, or circulate flow from surface to an annular space between the tool and a wellbore wall. The tool includes pressure actuated valves that provide the flow diverting functionality. The valves are in cooperation with one another to prevent fluid from the portion of the wellbore having the perforations from flowing into the annular space. A pressure actuated selector assembly, which is made up of a piston and specially configured mandrels that are coaxially stacked, selectively moves separate mandrels in an axial direction for opening and closing the valves.
    Type: Grant
    Filed: February 24, 2014
    Date of Patent: October 18, 2016
    Assignee: Baker Hughes Incorporated
    Inventor: Eugene Stolboushkin
  • Patent number: 9284722
    Abstract: A method for reducing the extent of treatment required for groundwater comprises the steps of (A) determining one of groundwater (1) flow, and (2) chemistry within at least one of a plurality of fluid zones within a subsurface well having a primary pump positioned at least partially therein; (B) modifying fluid dynamics within the subsurface well based on at least one of the groundwater flow and chemistry; (C) selectively extracting groundwater from at least one of the plurality of fluid zones with the primary pump; and (D) removing one or more contaminants from the groundwater with a fluid treatment system. Additionally, the step of determining can include the use of miniaturized technologies, such as miniaturized flow profiling technologies, miniaturized water sampling technologies and miniaturized sensors.
    Type: Grant
    Filed: June 13, 2013
    Date of Patent: March 15, 2016
    Assignee: BESST, Inc.
    Inventor: Noah R. Heller
  • Patent number: 9080415
    Abstract: An annular barrier system for expanding an annular barrier in an annulus between a well tubular structure and an inside wall of a borehole downhole includes an annular barrier having a tubular part for mounting as part of the well tubular structure. The annular barrier further has an expandable sleeve surrounding the tubular part, at least one end of the expandable sleeve being fastened in a fastener of a connection part in the tubular part. The annular barrier system also comprises a tool for expanding the expandable sleeve by letting a pressurized fluid through a passage in the tubular part into a space between the expandable sleeve and the tubular part.
    Type: Grant
    Filed: January 12, 2010
    Date of Patent: July 14, 2015
    Assignee: WELLTEC A/S
    Inventors: Jørgen Hallundbæk, Paul Hazel
  • Publication number: 20150096756
    Abstract: Methods and systems of treating hydrocarbon containing formations are described herein. A system for treating a subterranean hydrocarbon containing formation includes a wellbore, and one or more packers positioned in the wellbore. At least one of the packers allows fluid to be injected in a subterranean hydrocarbon containing formation while allowing fluid to be produced from the wellbore.
    Type: Application
    Filed: April 19, 2013
    Publication date: April 9, 2015
    Inventors: Mukul Mani Sharma, Ripudaman Manchanda, Evan Daniel Gilmore
  • Publication number: 20150060064
    Abstract: Well treatment with an untethered and/or autonomous device. In situ channelization treatment fluids used in multistage well treatment with an untethered and/or autonomous device is also disclosed. Also disclosed are methods and/or systems for treating a subterranean formation penetrated by a wellbore, relating to in situ channelization treatment fluids, which may optionally be energized, and untethered and/or autonomous devices.
    Type: Application
    Filed: October 1, 2013
    Publication date: March 5, 2015
    Applicant: Schlumberger Technology Corporation
    Inventors: Ted Lafferty, Matthew J. Miller
  • Publication number: 20150047842
    Abstract: An apparatus for wellbore treatment includes a tubular with one or more solid, erodible blocks on its outer surface. The blocks carry a chemical for wellbore treatment that is released in the wellbore by erosion of the blocks against the wellbore wall. A method for wellbore treatment employs the tubular to release the chemical in the well by erosion of the blocks.
    Type: Application
    Filed: August 15, 2014
    Publication date: February 19, 2015
    Inventor: TERRY HOSKINS
  • Publication number: 20150027706
    Abstract: A cementing port collar has an opening sleeve biased from a closed position to an opened position relative to the collar's exit port, and a first restraint temporarily holds the opening sleeve closed. The collar also has a closing sleeve biased from an opened position to a closed position, and a second restraint temporarily holds the closing sleeve opened. During cementing, the first restraint is electronically activated with a first trigger to release the opening sleeve opened so cement slurry can pass out of the collar's exit port to the borehole annulus. When cementing is completed, the second restraint is electronically activated with a second trigger to release the closing sleeve closed to close off the collar to the borehole so the cement can set. The restraints can include bands of synthetic fiber, which are burned by fuses activated by a controller of the collar responding to passage of RFID tags.
    Type: Application
    Filed: July 26, 2013
    Publication date: January 29, 2015
    Applicant: Wealtherford/Lamb, Inc.
    Inventor: Joshua V. Symms
  • Patent number: 8783341
    Abstract: A downhole plug includes a body and an element system disposed about the body. The plug further includes a first and second back-up ring member having two or more tapered wedges. The tapered wedges are at least partially separated by two or more converging grooves. First and second cones are disposed adjacent the first and second back-up ring members.
    Type: Grant
    Filed: July 2, 2010
    Date of Patent: July 22, 2014
    Inventor: W. Lynn Frazier
  • Publication number: 20140151052
    Abstract: A kobe sub includes a kobe installed in a port of the sub, the kobe includes a cap portion accessible in the inner bore, a base mounted in the port and connected to the cap portion, a channel extending through the base and closed by the cap portion; and an inflow controller positioned to control fluid flowing through the channel toward the inner bore when the cap portion is opened; and a port opening tool for opening the cap portion. The kobe may be employed with a frac port.
    Type: Application
    Filed: June 20, 2012
    Publication date: June 5, 2014
    Applicant: PACKERS PLUS ENERGY SERVICES INC.
    Inventors: Daniel Jon Themig, Robert Joe Coon
  • Publication number: 20140151039
    Abstract: An arrangement having a body with at least one drain provided in the body is disclosed. The drain is configured to receive fluid when the body is expanded from a first unexpanded condition to a second expanded condition. At least one flowline is connectable to the drain. A screen is positioned over the drain and is configurable to expand from the first unexpanded condition to the second expanded condition.
    Type: Application
    Filed: June 25, 2012
    Publication date: June 5, 2014
    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Pierre-Yves Corre, Stephane Metayer, Alexander F. Zazovsky, Stephen Yeldell, Jean-Louis Pessin
  • Patent number: 8720543
    Abstract: A sealing system between a relatively rotating element and a stationary element has at least three sealing elements arranged between the rotating element and the stationary element and arranged in series between a process fluid and an environment, and a barrier fluid arrangement to provide a barrier fluid to spaces formed between the sealing elements. The barrier fluid arrangement has at least two compensator devices where under use the pressure in the process fluid is acting on one side of a piston in the compensator device and the pressure in the barrier fluid is acting on the opposite side of the piston. There is a difference between cross sectional areas of the two sides of the piston and the difference varies between the at least two compensator devices.
    Type: Grant
    Filed: February 15, 2010
    Date of Patent: May 13, 2014
    Assignee: Reelwell AS
    Inventors: Morten Olav Meling, Harald Syse
  • Publication number: 20140116718
    Abstract: A system and/or a method collects formation fluids using a single packer with expansion rings and/or an irregular sealing layer. The packer may have an expansion ring extending around an outer circumference. The expansion ring may seal a portion of a wellbore to sample fluid from a formation. An irregular sealing layer may facilitate leaking between drains of the packer. The irregular sealing layer may have grooves through which fluid may flow. The irregular sealing layer may be composed of fibers and/or plastic.
    Type: Application
    Filed: November 1, 2012
    Publication date: May 1, 2014
    Applicant: Schlumberger Technology Corporation
    Inventors: Pierre-Yves Corre, Jean-Louis Pessin, Julian J. Pop, Stephane Metayer, Kathiravane Tingat Cody
  • Patent number: 8561689
    Abstract: A downhole apparatus has a radially expanding portion comprising a swellable elastomeric material selected to increase in volume on exposure to at least one predetermined fluid. A support assembly is operable to be deployed from a first retracted position to a second expanded condition. The support assembly comprises an inner surface arranged to face the radially expanding portion, and at least a portion of the inner surface is concave. The support assembly may be configured to direct a force from the swellable material to boost or energise a seal created between the radially expanding portion and a surrounding surface in use.
    Type: Grant
    Filed: April 28, 2010
    Date of Patent: October 22, 2013
    Assignee: Swelltec Limited
    Inventors: Kim Nutley, Brian Nutley
  • Patent number: 8522886
    Abstract: A downhole apparatus adapted to be run on a workstring in a well bore. The apparatus has a body including ports and a valve which is rotatable to open and close the ports to selectively allow fluid flow through the body between regions of a well bore above and below the apparatus. The valve is rotated via a gearbox and motor in the apparatus. A sealing arrangement between the valve and body is also described. A method of running the apparatus in a well bore and monitoring pressure above the apparatus in order to control opening and closing of the valve under predetermined conditions is presented.
    Type: Grant
    Filed: October 23, 2007
    Date of Patent: September 3, 2013
    Assignee: Red Spider Technology Limited
    Inventors: Michael J. Christie, Stuart Gordon, Irvine C. Brown, Michael A. Reid
  • Patent number: 8511394
    Abstract: A method for isolating a perforated interval of a well, the well including a casing liner having a wall with a plurality of perforations therethrough forming the perforated interval, the method comprising: providing a tool including a tubular body including an inner diameter and an outer surface, a first open end and a second open end, the first and second open ends providing access to the inner diameter; and a sealing element to isolate a mid region of the outer surface from the first open end and the second open end; positioning the tool in the well with the tubular first open end adjacent and above an uppermost perforation of the perforated interval and the second open end adjacent and below a lowermost perforation of the perforated interval; and installing the tool in the well with the sealing element sealing between the tubular body and the casing wall above the uppermost perforation of the perforated interval and below the lowermost perforation of the perforated interval to isolate fluid flow between th
    Type: Grant
    Filed: June 8, 2009
    Date of Patent: August 20, 2013
    Assignee: Packers Plus Energy Services Inc.
    Inventor: Daniel Jon Themig
  • Patent number: 8459376
    Abstract: A system for drilling a well bore with an under-balanced hydrostatic pressure. The system includes a tubular member containing a first port, a compression member disposed about the outer portion of the tubular member and having an internal sliding mandrel extending therefrom with a second port, an external sliding sleeve having a third port and being in contact with the internal sliding mandrel and operatively associated with the internal sliding mandrel, and a compressible seal disposed about the external sliding mandrel that is responsive to a longitudinal weight transferred to the compression member. In a closed position the first, second and third port are misaligned and in an open position the first, second and third ports are aligned.
    Type: Grant
    Filed: December 29, 2010
    Date of Patent: June 11, 2013
    Inventor: Danny T. Williams
  • Publication number: 20130037273
    Abstract: A method and apparatus for wellbore control include a downhole facing ball stop and sealing area that can stop and seal with an actuator ball migrating toward surface with wellbore returns or production. The downhole facing ball stop operates with the returning actuator ball to create a seal against any returns or production migrating toward surface such that well control is provided until the ball is removed from the sealing area or a bypass is opened around the seal.
    Type: Application
    Filed: April 21, 2011
    Publication date: February 14, 2013
    Applicant: PACKERS PLUS ENERGY SERVICES INC.
    Inventors: Daniel Jon Themig, Michael Kenyon
  • Publication number: 20120325466
    Abstract: A wellbore fluid treatment assembly includes: a tubing string, a fluid port extending through the tubing string wall, the fluid port positioned in a shift gap created by movement of a sliding sleeve valve when opening the fluid port; and a tool for locating the fluid port in the tubing string, the tool including: a body, a locking protrusion encircling a circumference of the body, at least a portion of the locking protrusion having a length measured along the tool's long axis selected to fit into the shift gap.
    Type: Application
    Filed: June 20, 2012
    Publication date: December 27, 2012
    Applicant: PACKERS PLUS ENERGY SERVICES INC.
    Inventor: DANIEL JON THEMIG
  • Publication number: 20120000674
    Abstract: The present invention relates to a jetting tool and method useful for inserting coiled or stick tubing further into subterranean wells, to permit additional production capacity to be realized from the well. The tool is located near a distal end of the tubing and can be used to generate and insertion thrust that facilitates insertion of the tubing.
    Type: Application
    Filed: June 30, 2011
    Publication date: January 5, 2012
    Inventor: Dale B. Seekford
  • Publication number: 20110240284
    Abstract: An apparatus (100) for controlling the flow rate of a fluid during downhole operations. The apparatus (100) includes a tubular member (134) having a flow path (136) between inner and outer portions of the tubular member (134). The flow path (136) includes an inlet (138) in an inner sidewall (140) and an outlet (142) in an outer sidewall (144) of the tubular member (134). The inlet (138) and the outlet (142) are laterally offset from each other. A fluidic device (146) is positioned in the flow path (136) between the inlet (138) and the outlet (142). The fluidic device (146) is embedded within the tubular member (134) between the inner sidewall (140) and the outer sidewall (144). The fluidic device (146) includes a nozzle (154) having a throat portion (156) and a diffuser portion (158) such that fluid will flow through the nozzle (154) at a critical flow rate.
    Type: Application
    Filed: March 30, 2010
    Publication date: October 6, 2011
    Applicant: HALLIBURTON ENERGY SERVICES, INC.
    Inventors: Syed Hamid, Michael Linley Fripp, Edward John Patton
  • Patent number: 7913770
    Abstract: Methods and devices for equalizing an atmospheric chamber within a well tool in a controlled manner following the operation of setting the well tool. A packer setting tool has a setting mechanism with an atmospheric chamber and an equalization assembly to permit the pressure differential between the atmospheric chamber and the surrounding annulus to be substantially equalized.
    Type: Grant
    Filed: June 30, 2008
    Date of Patent: March 29, 2011
    Assignee: Baker Hughes Incorporated
    Inventors: Robert D. Schramm, Marcus A. Avant
  • Publication number: 20110067890
    Abstract: A method for isolating a perforated interval of a well, the well including a casing liner having a wall with a plurality of perforations therethrough forming the perforated interval, the method comprising: providing a tool including a tubular body including an inner diameter and an outer surface, a first open end and a second open end, the first and second open ends providing access to the inner diameter; and a sealing element to isolate a mid region of the outer surface from the first open end and the second open end; positioning the tool in the well with the tubular first open end adjacent and above an uppermost perforation of the perforated interval and the second open end adjacent and below a lowermost perforation of the perforated interval; and installing the tool in the well with the sealing element sealing between the tubular body and the casing wall above the uppermost perforation of the perforated interval and below the lowermost perforation of the perforated interval to isolate fluid flow between th
    Type: Application
    Filed: June 8, 2009
    Publication date: March 24, 2011
    Applicant: PACKERS PLUS ENERGY SERVICES INC.
    Inventor: Daniel Jon Themig
  • Patent number: 7878239
    Abstract: A fluid collecting apparatus inserted in a borehole for collecting fluid in the borehole. The fluid collecting apparatus may include a first packer and a second packer which are selectively adhered to an inside of the borehole, a first supply pipe and a second supply pipe which supply expansion fluid to each of the first packer and the second packer, and a guide tube which guides fluid in a collecting space between the first packer and the second packer to an outside of the borehole. Also, the second supply pipe moves with the second packer in a longitudinal direction of the borehole, and a passage which does not communicate with the first supply pipe is formed. Accordingly, the fluid collecting apparatus may independently control the first and second packers, and thus fluid in a desired depth and region within the borehole may be easily collected.
    Type: Grant
    Filed: November 26, 2008
    Date of Patent: February 1, 2011
    Assignees: Korea Atomic Energy Research Institute, Korea Hydro & Nuclear Power Co., Ltd.
    Inventors: Yong Kwon Koh, Kyung Woo Park, Si Won Yoo, Jong Won Choi
  • Patent number: 7836961
    Abstract: A tool includes an integrated hydraulic setting and hydrostatic setting mechanism that has a first part responsive to hydraulic pressure applied through a conduit, and a second part responsive to hydrostatic pressure. An activatable element can be activated by the integrated hydraulic setting and hydrostatic setting mechanism.
    Type: Grant
    Filed: March 5, 2008
    Date of Patent: November 23, 2010
    Assignee: Schlumberger Technology Corporation
    Inventors: Haoming Li, Bryan Burwell
  • Publication number: 20100276137
    Abstract: A downhole apparatus and support assembly is described. The downhole apparatus has a radially expanding portion comprising a swellable elastomeric material selected to increase in volume on exposure to at least one predetermined fluid, and the support assembly is operable to be deployed from a first retracted position to a second expanded condition. The support assembly comprises an inner surface arranged to face the radially expanding portion, and at least a portion of the inner surface is concave. In another aspect the support assembly is configured to direct a force from the swellable material to boost or energize a seal created between the radially expanding portion and a surrounding surface in use.
    Type: Application
    Filed: April 28, 2010
    Publication date: November 4, 2010
    Applicant: Swelltec Limited
    Inventors: Kim Nutley, Brian Nutley
  • Publication number: 20100230101
    Abstract: The invention discloses an apparatus (40) comprising: a setting section (1) surrounded by a first sleeve (2), said first sleeve being expandable and impermeable to a material; an inflating means (1a, 3a) for inflating said first sleeve, said inflating means ensuring that the first sleeve can be in contact with a first zone (60a) of a tube (10) which is permeable to said material, so that said first zone of said tube becomes impermeable to said material; and further comprising a second sleeve portion (4) partially permeable to said material on a second zone (60A?) and attached to said first sleeve so that: a path (2a) is provided between said first sleeve and said second sleeve portion and so that, when the first sleeve is inflated the second zone can be in contact with said tube allowing the material to flow in the path and through the second zone. Also, the invention discloses the associated method for treatment of a near zone and/or a far zone of a well with the disclosed apparatus.
    Type: Application
    Filed: June 2, 2008
    Publication date: September 16, 2010
    Inventors: Christophe Rayssiguier, Denis Prost, Mickael Allouche
  • Publication number: 20100200218
    Abstract: Apparatus and method for treating zones in a wellbore. The apparatus includes an expandable packer assembly and a sealing element positioned in the treatment assembly above the packer assembly. A communication port is positioned between the sealing element and the packer assembly. A plurality of slips will grippingly engage the well above the port through which treatment fluid is communicated to resist upward force caused by treatment pressure in the well acting on the sealing element. The sealing element may be a cup packer.
    Type: Application
    Filed: February 6, 2009
    Publication date: August 12, 2010
    Inventors: Troy Palidwar, Gary Maier
  • Patent number: 7610958
    Abstract: Disclosed herein is a device that relates to an actuator comprising a plurality of individual piston chambers pressurized by a common pressure source. A plurality of pistons are in operable communication with the piston chambers, the pistons each being in operable communication with an actuatable device, such that the plurality of pistons simultaneously act upon the actuatable device upon application of pressure to the plurality of piston chambers.
    Type: Grant
    Filed: July 24, 2006
    Date of Patent: November 3, 2009
    Assignee: Baker Hughes Incorporated
    Inventor: Peter Barnes Moyes
  • Publication number: 20090107665
    Abstract: Disclosed are retrievable through-tubing tools and methods for use in wellbores to inject fluids at subterranean locations wherein the tool have spaced foamed seal elements that are retracted during installation and expand when in use.
    Type: Application
    Filed: December 9, 2008
    Publication date: April 30, 2009
    Inventors: Diederik van Batenburg, Verlaan Marco
  • Publication number: 20090032255
    Abstract: An embodiment of a well bore servicing apparatus includes a housing having a through bore and at least one high pressure fluid aperture in the housing, the fluid aperture being in fluid communication with the through bore to provide a high pressure fluid stream to the well bore, and a removable member coupled to the housing and disposed adjacent the fluid jet forming aperture and isolating the fluid jet forming aperture from an exterior of the housing.
    Type: Application
    Filed: August 3, 2007
    Publication date: February 5, 2009
    Applicant: Halliburton Energy Services, Inc.
    Inventors: Jim Surjaatmadja, Matthew Howell
  • Publication number: 20090008083
    Abstract: A tubing string assembly for fluid treatment of a wellbore includes substantially pressure holding closures spaced along the tubing string, which each close at least one port through the tubing string wall. The closures are openable by a sleeve drivable through the tubing string inner bore.
    Type: Application
    Filed: September 11, 2008
    Publication date: January 8, 2009
    Applicant: PACKERS PLUS ENERGY SERVICES INC.
    Inventors: DANIEL JON THEMIG, JIM FEHR
  • Patent number: 7468890
    Abstract: A graphics card heat-dissipating device includes: a main body, a support seat, and a fixed element. The main body has a first heat-dissipating portion and a second heat-dissipating portion, and the first heat-dissipating portion has a first opening and the second heat-dissipating portion has a second opening. The support seat is used for supporting a chip, and the support seat has a third opening. The fixed element is fixed on the first heat-dissipating portion by passing through the second opening, the third opening and the first opening in sequence for attaching the chip on the first heat-dissipating portion. Therefore, the heat convection function and the heat-dissipating efficiency are increased.
    Type: Grant
    Filed: June 12, 2007
    Date of Patent: December 23, 2008
    Assignee: Cooler Master Co., Ltd.
    Inventor: Wei-Pin Lin
  • Publication number: 20080190605
    Abstract: Embodiments of the present invention provide a method and apparatus for flow testing multiple zones in a single trip. In one embodiment, a method of flow testing multiple zones in a wellbore includes lowering a tool string into the wellbore. The tool string includes an inflatable packer or plug and an electric pump. The method further includes operating the pump, thereby inflating the packer or plug and isolating a first zone from one or more other zones; monitoring flow from the first zone; deflating the packer or plug; moving the tool string in the wellbore; and operating the pump, thereby inflating the packer or plug and isolating a second zone from one or more other zones; and monitoring flow from the second zone. The zones are monitored in one trip.
    Type: Application
    Filed: February 12, 2008
    Publication date: August 14, 2008
    Inventors: Timothy Dale Clapp, Robert Murphy, Paul James Wilson, Mark Rogers
  • Patent number: 7387157
    Abstract: A dynamic inflatable sealing device for maintaining the pressure within an inflatable element at least substantially equal to the pressure in the annulus to maintain the inflatable element in a sealing position. The dynamic sealing device includes an inflatable element forming an internal chamber, the inflatable element expandable to sealing engagement with a wall, and a dynamic valve mechanism in operational connection between the internal chamber and exterior of the internal chamber substantially communicating the pressure external of the inflatable element to the internal chamber.
    Type: Grant
    Filed: September 14, 2005
    Date of Patent: June 17, 2008
    Assignee: Schlumberger Technology Corporation
    Inventors: Philippe Gambier, Jose F. Garcia, John Whitsitt
  • Patent number: 7134488
    Abstract: An isolation assembly for use with coiled tubing is described. The isolation assembly has a check valve for providing selective fluid communication through from the coiled tubing, through the isolation assembly, and into a downhole tool, such a straddle packer. The isolation assembly includes a shuttle moveable within a housing, and plurality of ports to selectively provide fluid communication from within the isolation assembly below the check valve, through the ports, and into the annulus, thus allowing selective surface-controlled equalization of downhole equipment. Also described is a bottom hole assembly including the isolation assembly. An improved method of fracing a formation includes providing a check valve, thus improving the life of the coiled tubing and the safety of the operation, and reducing the time to perform a given downhole operation.
    Type: Grant
    Filed: April 22, 2004
    Date of Patent: November 14, 2006
    Assignee: BJ Services Company
    Inventors: Eric Hughson Tudor, William George Gavin
  • Patent number: 6955216
    Abstract: A device for injecting a fluid into an earth formation surrounding a wellbore, comprising a body suitable to be arranged in the wellbore and being provided with means for connecting the body to a tubing, a fluid chamber for storage of said fluid, and a pair of inflatable packers arranged to isolate a portion of the wellbore between the packers from the remainder of the wellbore upon inflation of the packers, the body further being provided with an outlet port located between the packers for flow of fluid from the fluid chamber to outside the device, means for inflating the packers upon the occurrence of a primary fluid pressure in the tubing, and means for ejecting fluid from the fluid chamber via the outlet port to outside the device upon the occurrence of a secondary fluid pressure in the tubing, wherein the secondary fluid pressure is higher than the primary fluid pressure.
    Type: Grant
    Filed: November 24, 2000
    Date of Patent: October 18, 2005
    Assignee: Shell Oil Company
    Inventors: Wilhelmus Hubertus Paulus Maria Heijnen, Maria Joao Ramos Correia Morato Pena
  • Patent number: 6907936
    Abstract: A tubing string assembly is disclosed for fluid treatment of a wellbore. The tubing string can be used for staged wellbore fluid treatment where a selected segment of the wellbore is treated, while other segments are sealed off. The tubing string can also be used where a ported tubing string is required to be run in in a pressure tight condition and later is needed to be in an open-port condition.
    Type: Grant
    Filed: November 19, 2002
    Date of Patent: June 21, 2005
    Assignee: Packers Plus Energy Services Inc.
    Inventors: Jim Fehr, Daniel Jon Themig
  • Patent number: 6776229
    Abstract: A check enhancer for use in a well comprises a housing portion and an injector portion disposed in the housing portion. The housing portion includes an outer body defining a fluid cavity therein with a plurality of body ports in communication with the fluid cavity. The injector portion includes a check valve and a dispersement nipple in communication therewith. The check valve is connected to the outer body, and the dispersement nipple extends into the fluid cavity. The check valve allows fluid flow from the tubing through nipple ports defined in the dispersement nipple. The nipple ports are longitudinally spaced from the body ports so that the fluid cavity remains substantially filled with fluid with the dispersement nipple substantially submerged within the fluid.
    Type: Grant
    Filed: February 10, 2003
    Date of Patent: August 17, 2004
    Inventor: Danny Joe Floyd
  • Patent number: 6702015
    Abstract: A technique to facilitate deployment of power cable and at least one capillary tube through a wellbore tool, such as a packer. The technique allows both the power cable and the at least one capillary tube to extend through a single pass-through opening in the wellbore tool.
    Type: Grant
    Filed: January 8, 2002
    Date of Patent: March 9, 2004
    Assignee: Schlumberger Technology Corporation
    Inventors: Robert P. Fielder, III, Timothy W. Collen, Massimiliano Pozzoni
  • Patent number: 6695057
    Abstract: A collar for injecting fluid, such as a formation treating fluid, into a wellbore, and a method for using same. The collar is disposed between the upper and lower packing elements of a pack-off system during the treatment of an area of interest within a wellbore. The collar first comprises an inner mandrel running essentially the length of the collar. The inner bore of the collar is in fluid communication with the annular region between the collar and the surrounding perforated casing by a set of actuation ports. A second set of ports, known as frac ports, is disposed within the mandrel. In accordance with one aspect of the invention, the collar further comprises a tubular case which substantially seals the frac ports in a first position, and slidably moves along the outer surface of the mandrel in order to expose the frac ports in a second position. In operation, the upper and lower packing elements are set at a first fluid pressure level.
    Type: Grant
    Filed: February 11, 2002
    Date of Patent: February 24, 2004
    Assignee: Weatherford/Lamb, Inc.
    Inventors: Gary D. Ingram, Corey E. Hoffman, Richard L. Giroux
  • Patent number: 6655454
    Abstract: A check enhancer for use in a well comprises an outer housing portion and an inner injector portion disposed in the housing portion. The housing portion includes an outer body defining a fluid cavity therein with a plurality of body ports in communication with the fluid cavity and an adapter which slidably receives a portion of a length of tubing therethrough. A tubing fitting connects the tubing to the adapter. The injector portion includes a check valve and a dispersement nipple attached thereto. The check valve is connected to the tubing in the fluid cavity by another tubing fitting, and the check valve allows fluid flow from the tubing through nipple ports defined in the dispersement nipple. The nipple ports are longitudinally spaced from the body ports so that the fluid cavity remains substantially filled with fluid with the dispersement nipple substantially submerged within the fluid.
    Type: Grant
    Filed: June 20, 2002
    Date of Patent: December 2, 2003
    Inventor: Danny Joe Floyd
  • Publication number: 20030037932
    Abstract: The present invention, therefore, discloses in certain, but not necessarily all, embodiments a method for reclaiming a borehole extending from an earth surface into the earth, part of which borehole is in a lost circulation zone, the method including closing off the borehole to fluid flow above the lost circulation zone by installing a packer system with an inflatable packer element, a plurality of ribs mounted around the inflatable packer element, and a valve apparatus in the borehole above the lost circulation zone, the packer system made of drillable material, inflating the inflatable packer element with cement, and allowing the cement to set so that the inflatable packer and the valve apparatus effectively seal off the borehole to fluid flow.
    Type: Application
    Filed: August 27, 2001
    Publication date: February 27, 2003
    Inventors: Brett Guillory, David Ward
  • Publication number: 20020195248
    Abstract: A collar for injecting fluid, such as a formation treating fluid, into a wellbore, and a method for using same. The collar is disposed between the upper and lower packing elements of a pack-off system during the treatment of an area of interest within a wellbore. The collar first comprises an inner mandrel running essentially the length of the collar. The inner bore of the collar is in fluid communication with the annular region between the collar and the surrounding perforated casing by a set of actuation ports. A second set of ports, known as frac ports, is disposed within the mandrel. In accordance with one aspect of the invention, the collar further comprises a tubular case which substantially seals the frac ports in a first position, and slidably moves along the outer surface of the mandrel in order to expose the frac ports in a second position. In operation, the upper and lower packing elements are set at a first fluid pressure level.
    Type: Application
    Filed: February 11, 2002
    Publication date: December 26, 2002
    Inventors: Gary D. Ingram, Corey E. Hoffman, Richard L. Giroux
  • Publication number: 20020162660
    Abstract: The present invention relates to straddle packer systems and methods of using them for downhole isolation of zones for fracturing treatment. More specifically, the system includes upper and lower seal systems having resiliently flexible sealing elements hydraulically and operatively connected to one another which are responsive to an increase in hydraulic pressure for setting the sealing elements at a first hydraulic pressure threshold. Additionally, the system includes a control system hydraulically and operatively connected between the upper and lower packer systems which is responsive to an increase in hydraulic pressure at a second hydraulic pressure threshold higher for activating a pressure switch system within the control system for opening at least one frac valve in the control system.
    Type: Application
    Filed: December 19, 2001
    Publication date: November 7, 2002
    Inventors: Karol Depiak, Fred Jagert
  • Patent number: 6427773
    Abstract: A tubing plug is adapted for insertion into a tubing string for sealing the tubing string. The tubing plug is comprised of a housing having an outer surface, wherein the housing is adapted for insertion in the tubing string such that an annulus is defined between the tubing string and the outer surface of the housing and wherein the housing defines a fluid passage therethrough, the fluid passage having an upper end and a lower end. A sealing mechanism is associated with the housing for sealing the annulus and a two-way fluid bypass is provided for selectively permitting a flow of a fluid across the sealing mechanism. Finally, a one-way valve is located at the lower end of the fluid passage for selectively permitting a flow of a fluid in a first direction from the upper end to the lower end of the fluid passage and for preventing a flow of a fluid in a second direction from the lower end to the upper end of the fluid passage.
    Type: Grant
    Filed: September 21, 2000
    Date of Patent: August 6, 2002
    Assignee: Lonkar Services Ltd.
    Inventor: Tim Albers
  • Publication number: 20020062963
    Abstract: A tool string, such as one used for performing fracturing operations or other types of operations, includes a valve, a valve operator, and a sealing assembly that in one arrangement includes packers to define a sealed zone. The tool string is carried on a tubing, through which fluid flow may be pumped to the sealed zone. The valve operator is actuated in response to fluid flow above a predetermined flow rate. When the flow rate at greater than the predetermined flow rate does not exist, the valve operator remains in a first position that corresponds to the valve being open. However, in response to a fluid flow rate at greater than the predetermined flow rate, the valve operator is actuated to a second position to close the valve.
    Type: Application
    Filed: November 29, 2000
    Publication date: May 30, 2002
    Inventors: David M. Eslinger, Howard L. McGill, James M. Costley, Randolph J. Sheffield, Warren M. Zemlak
  • Patent number: 6371207
    Abstract: A tubular body or mandrel incorporated into a string of tubular pipe, on which first and second swab cups and a casing scraper are mounted, is run into a cased earth borehole to displace a first fluid in the borehole, usually a drilling fluid, with a second fluid, usually either a completion fluid or a workover fluid. In a first embodiment, reverse circulation, in which the second fluid is pumped into the borehole annulus above the swab cups, and in which the first fluid is thereby pumped back towards the earth's surface through the interior of the string of tubular pipe, causes displacement of the first fluid merely by lowering the string of pipe while pumping the second fluid into the borehole annulus. In a second embodiment, using normal circulation, the first fluid is pumped from the earth's surface downwardly through the interior of the string of tubular pipe into the borehole annulus between the pair of swab cups.
    Type: Grant
    Filed: June 10, 1999
    Date of Patent: April 16, 2002
    Assignee: M-I L.L.C.
    Inventor: J. Scott Reynolds