Spring Set Patents (Class 166/214)
  • Patent number: 9759034
    Abstract: A frac plug mandrel assembly has an inner core that permits flow that is surrounded by a thin wall tube that distributes compressive loading, such as that applied by the set sealing element to the core. The core is a cylindrically shaped insert for inside the tube and allows flow until a ball or plug is landed on a seat to close off the flow through the core. The core can have a star pattern with a series of radially extending segments from a solid hub or a cylindrical shape of a honeycomb or other porous structure that has the requisite strength to resist collapse from compressive loading of the set sealing element while still allowing sufficient flow area for fluid displacement.
    Type: Grant
    Filed: April 20, 2012
    Date of Patent: September 12, 2017
    Assignee: Baker Hughes Incorporated
    Inventors: James G. King, Edward J. O'Malley
  • Patent number: 9657547
    Abstract: A frac plug is configured to seal a pipe of a downhole well. The frac plug includes a cylindrical plug member comprising a glass body made of a tempered or high-compression glass. The plug member has axial opposite ends with a tapered outer diameter surface extending along its length between the ends. The frac plug further includes a seal of compressible material extending substantially around the plug member outer diameter. The seal has opposite axial ends corresponding to the axial ends of the plug member. The seal is movable axially relative to, and compressible against, the plug member outer diameter surface, thus allowing the seal expand radially outward to engage the bore of the pipe. The frac plug is anchored in the pipe bore with clamping portions on axially opposite ends of the plug member. The clamping portion may include bore engagement portions that are arcuate or radially expanding fingers.
    Type: Grant
    Filed: October 28, 2014
    Date of Patent: May 23, 2017
    Assignee: RAYOTEK SCIENTIFIC, INC.
    Inventor: William Raggio
  • Patent number: 9212528
    Abstract: A lock assembly including a plurality of dogs, each dog being circumferentially adjacent to at least one other dog in the plurality and each dog including a load bearing surface. An extender body is operatively arranged to transition the plurality of dogs between a retracted configuration and an extended configuration. The load bearing surface of each dog is operatively arranged in the extended configuration for engaging against a shoulder of a radially adjacent structure for supporting the lock assembly. The load bearing surfaces of the dogs together form a substantially circumferentially continuous shape when arranged in one of the retracted or extended configurations. And method of locking radially adjacent components.
    Type: Grant
    Filed: December 17, 2012
    Date of Patent: December 15, 2015
    Assignee: Baker Hughes Incorporated
    Inventor: Steven S. Black
  • Publication number: 20150144327
    Abstract: A torque anchor intended to block the rotation of a production string with respect to a casing of a well, the torque anchor comprising a body, at least two supports mobile with respect to the body, wheels borne by the supports, the wheels being suitable for running on an inner face of said casing, at least one restraining device suitable for exerting a force on said wheels in order to anchor said wheels in said casing. Each restraining device comprises a set of springs suitable for acting on the set of said supports and a guide capable of guiding said set of springs; said guide being borne by said supports; said guide being mobile with respect to at least one support.
    Type: Application
    Filed: November 24, 2014
    Publication date: May 28, 2015
    Inventors: Francois Millet, Stephen Burrows
  • Publication number: 20150083406
    Abstract: A downhole tractor assembly that is configured for open-hole applications. The assembly includes a force monitoring mechanism to help monitor and control forces imparted through a drive mechanism of the tractor in real time. As such, damage to open-hole formations due to excessive tractoring forces may be minimized along with mechanical damage to the tractor. Furthermore, the drive mechanism of the tractor may include multiple sondes and bowsprings with gripping saddles specially configured for contacting the well wall across a large area in a non-point and line manner so as to avoid digging into and damaging the well wall during tractoring.
    Type: Application
    Filed: December 2, 2014
    Publication date: March 26, 2015
    Inventors: Keith R. Nelson, Gohar Saeed, Franz Aguirre
  • Patent number: 8978776
    Abstract: An expandable tubular to be used within geologic structures and a method of manufacturing thereof has a substantially tubular shaped member with an axis extending therethrough. The tubular member has one or more helical member formed within a wall of the tubular member, and the helical member may be defined about the axis of the tubular shaped member. Further, a plurality of elongated perforations are formed within the wall of tubular member, and the tubular member is compressible from a larger diameter to a smaller diameter. When compressed, the tubular member stores expansive energy within the wall, in which the tubular member may then expand back to a larger diameter when the expansive energy is released.
    Type: Grant
    Filed: April 17, 2008
    Date of Patent: March 17, 2015
    Assignee: Dynamic Tubular Systems, Inc.
    Inventor: Jeffery A. Spray
  • Publication number: 20150047829
    Abstract: A torque anchor intended to block the rotation of a production string with respect to a casing of a well; the torque anchor comprising a body and anchor cassettes comprising a wheel having a circumference and a wheel spindle supporting said wheel, a contact point of the circumference of the wheel being intended to come into contact with the casing, an opposite point being arranged diametrically opposite the contact point. For each anchor cassette, the wheel is mounted on the end of the wheel spindle; a positioning angle comprised between 30° and 180° being defined between a first straight line passing through the centre of the casing and the contact point and a second straight line passing through the centre of the casing and the opposite point.
    Type: Application
    Filed: August 12, 2014
    Publication date: February 19, 2015
    Inventors: Francois Millet, Stephen Burrows
  • Patent number: 8893807
    Abstract: An actuation tool uses a lock that when released allows a moving magnet to move into position to repel another magnet. The repelling force on the second magnet moves it away from a locking position on a stored potential energy system where the release of the potential energy creates kinetic energy to drive an actuation assembly to set the tool. In a preferred application the tool can be a liner hanger. The release device can be a selectively energized electromagnet or a solenoid that shifts at least one magnet into alignment with at least one second magnet so as to defeat the second magnet from effectively storing the potential energy that can set the tool when the lock is defeated.
    Type: Grant
    Filed: March 15, 2011
    Date of Patent: November 25, 2014
    Assignee: Baker Hughes Incorporated
    Inventor: Alasdair R. Tait
  • Patent number: 8800650
    Abstract: An expandable tubular includes a plurality of leaves formed from sheet material that have curved surfaces. The leaves extend around a portion or fully around the diameter of the tubular structure. Some of the adjacent leaves of the tubular are coupled together. The tubular is compressed to a smaller diameter so that it can be inserted through previously deployed tubular assemblies. Once the tubular is properly positioned, it is deployed and coupled or not coupled to a previously deployed tubular assembly. The tubular is useful for all types of wells and boreholes.
    Type: Grant
    Filed: March 12, 2007
    Date of Patent: August 12, 2014
    Assignee: Dynamic Tubular Systems, Inc.
    Inventors: Jeffery A. Spray, Steven Svedeman, David Walter, Peter Mckeighan, Shane Siebanaler, Peter Dewhurst, Steven Hobson, Doug Foss, Holger Wirz, Aaron Sharpe, Michael Apostal
  • Publication number: 20140000870
    Abstract: A safety valve can be disposed in a wellbore that is through a fluid-producing formation. The safety valve can include a flow tube that is allowed to move at least partially independent, or free, from a piston assembly to avoid negative effects from forces on the flow tube from a closing assembly, such as one including a flapper. For example, the flow tube may not be required to be rigidly connected to a piston assembly such that the flow tube can move more than the piston assembly moves.
    Type: Application
    Filed: June 27, 2012
    Publication date: January 2, 2014
    Applicant: HALLIBURTON ENERGY SERVICES, INC.
    Inventors: James Dan Vick, JR., Leo G. Collins, Jeremy Pike Brimer
  • Patent number: 8485265
    Abstract: Downhole devices including degradable materials and methods of using such devices to control downhole operations are disclosed. A method for controlling a downhole operation includes providing a device that includes a degradable material downhole; and degrading the degradable material to activate the device. Activation of the device may result in a displacement or flow (actuators) that may be used to control or monitor (sensor) a downhole oilfield operation. A downhole device for use in a well penetrating a formation includes, in part or in whole, a degradable material.
    Type: Grant
    Filed: June 27, 2007
    Date of Patent: July 16, 2013
    Assignee: Schlumberger Technology Corporation
    Inventors: Manuel Marya, Rashmi Bhavsar
  • Patent number: 8328242
    Abstract: Various novel connectors are provided. In one embodiment, the connector includes a collar configured to receive first and second components. In this embodiment, the connector may also include a load ring configured to be received in a groove of the second component and to move into and out of engagement with the collar when the second component is received by the collar. The connector of this illustrative embodiment may also include a cotter configured for installation to the second component and to inhibit disengagement of the load ring from the collar. In some embodiments, engagement of the load ring and the collar effects securing of the first and second components to one another. Other devices, systems, and methods related to connectors are also disclosed.
    Type: Grant
    Filed: January 8, 2009
    Date of Patent: December 11, 2012
    Assignee: Cameron International Corporation
    Inventors: Kirk P. Guidry, Dennis P. Nguyen, Joseph R. Wilhelmi, Terry L. Shinn
  • Publication number: 20120273231
    Abstract: An apparatus comprises a support member operable to be disposed within a tubular member that includes a threaded connection with a pin member. The tubular member is coupled to an expansion device that is operable to radially expand the tubular member and a pin catcher that is operable to engage the pin member as the expansion device and pin catcher move axially through the tubular member.
    Type: Application
    Filed: April 28, 2011
    Publication date: November 1, 2012
    Applicant: ENVENTURE GLOBAL TECHNOLOGY, L.L.C.
    Inventor: Richard Murray Whiddon
  • Patent number: 8272448
    Abstract: An electrical line for installation in a well for transmitting power to a well pump includes a string of coiled tubing. An electrical cable having insulated electrical conductors embedded within an elastomeric jacket extends longitudinally through the interior passage of the tubing. Body members are placed around the outer periphery of the electrical cable, and the body members are compressed onto the electrical cable through the use of an anchor assembly. The anchor assembly is held in a compressed state through the use of frangible support elements. Once the electrical cable is in place within the coiled tubing, the user applies an external force to cause the support elements to fail, thereby releasing the anchor assembly from its compressed state. The anchor assembly contacts the inner wall of the coiled tubing, such that the weight of the electrical cable is transferred to coiled tubing.
    Type: Grant
    Filed: October 15, 2009
    Date of Patent: September 25, 2012
    Assignee: Baker Hughes Incorporated
    Inventor: John J. Mack
  • Publication number: 20120234530
    Abstract: An actuation tool uses a lock that when released allows a moving magnet to move into position to repel another magnet. The repelling force on the second magnet moves it away from a locking position on a stored potential energy system where the release of the potential energy creates kinetic energy to drive an actuation assembly to set the tool. In a preferred application the tool can be a liner hanger. The release device can be a selectively energized electromagnet or a solenoid that shifts at least one magnet into alignment with at least one second magnet so as to defeat the second magnet from effectively storing the potential energy that can set the tool when the lock is defeated.
    Type: Application
    Filed: March 15, 2011
    Publication date: September 20, 2012
    Applicant: BAKER HUGHES INCORPORATED
    Inventor: Alasdair R. Tait
  • Patent number: 8225869
    Abstract: Methods and devices are provided for accurately determining depths of certain structures in downhole strings. Locator tools comprise a shaft and a plurality of locator springs longitudinally mounted on the shaft. The locator springs are biased to expand and are configured to compress to allow the tool to traverse past restrictions in the downhole string. Each locator spring includes a locating pad that allows it to engage with an internal locating notch in the downhole string. The internal locating notch is sized to mate with the locator tool, i.e., to allow the locator springs to engage the internal locating notch. In this way, the depth of internal locating notches may be determined precisely and accurately by sensing engagement of the tool with the internal locating notch. Advantages of certain embodiments include more accurate depth determination, repeatable engagements of the tool, and reduced false engagements.
    Type: Grant
    Filed: November 7, 2008
    Date of Patent: July 24, 2012
    Assignee: GE Oil & Gas Logging Services, Inc.
    Inventors: Dana M. Beard, Parish Triche, Larry Tidwell
  • Patent number: 7918275
    Abstract: An apparatus for controlling fluid flow into a wellbore tubular includes a flow control member that selectively aligns a port with an opening in communication with a flow bore of the well bore tubular. The flow control member may have an open position wherein the port is aligned with the opening and a closed position wherein the port is misaligned with the opening. The flow control member moves between the open position and closed position in response to a change in drag force applied by a flowing fluid. A biasing element urges the flow control member to the open or the closed position. The apparatus may include a housing receiving the flow control member. The flow control member and the housing may define a flow space that generates a Couette flow that causes the drag force. The flow space may include a hydrophilic and/or water swellable material.
    Type: Grant
    Filed: November 19, 2008
    Date of Patent: April 5, 2011
    Assignee: Baker Hughes Incorporated
    Inventor: Nicholas J. Clem
  • Patent number: 7905295
    Abstract: Submersible pump power cable is inserted into a length of tubing. The device comprises an anchoring system attachable to the cable affixed to the tubing inner surface. The anchoring system includes an anchoring sleeve slideable over the cable and insertable into the tubing. Coiling the tubing with the cable and anchoring system inside energizes the sleeve into an anchoring configuration to anchor the cable within the tubing. The anchoring system continues to anchor the cable after uncoiling the tubing and inserting it into a wellbore.
    Type: Grant
    Filed: September 26, 2008
    Date of Patent: March 15, 2011
    Assignee: Baker Hughes Incorporated
    Inventor: John J. Mack
  • Patent number: 7849928
    Abstract: ESP power cable is inserted into a length of tubing disposed in a wellbore. The device comprises a support attachable to the cable that is in frictional sliding contact with the tubing inner surface. The frictional sliding contact between the support and the tubing reduces axial stress in the cable. Support devices are added at intervals on the cable length, thereby distributing the cable axial stress along the cable.
    Type: Grant
    Filed: June 13, 2008
    Date of Patent: December 14, 2010
    Assignee: Baker Hughes Incorporated
    Inventor: Charles C. Collie
  • Patent number: 7743827
    Abstract: Remote operation wire line core sampling device capable of increasing efficiency of working and maintaining a wall of a hole using a stabilized sea-bottom core drill at a sea-bottom, and adopting a wire line system. The device includes a drill rod held by a chuck of the sea-bottom core drill, a wire line core barrel having, at a tip thereof, a bit for annularly drilling into ground, an inner tube assembly detachably incorporated in the wire line core barrel, and an over-shot assembly having a function for engagement thereof with a spear head part at a top end of an inner tube assembly. The device also includes a water swivel in which water supply ports are formed at upper and lower parts thereof, a modified built-in type over-shot assembly is formed at upper and lower parts thereof, and a modified built-in type over-shot assembly is incorporated therein to reside at an intermediate part thereof.
    Type: Grant
    Filed: September 1, 2004
    Date of Patent: June 29, 2010
    Assignees: Mitsui Engineering & Shipbuilding Co., Ltd., K. Maikai Co., Ltd., Toho Chikakoki Co., Ltd.
    Inventors: Yukio Kadomoto, Isao Yamanaka, Hiroshi Tanaka, Takahiko Tsuchiya
  • Publication number: 20100096144
    Abstract: An electrical line for installation in a well for transmitting power to a well pump includes a string of coiled tubing. An electrical cable having insulated electrical conductors embedded within an elastomeric jacket extends longitudinally through the interior passage of the tubing. Body members are placed around the outer periphery of the electrical cable, and the body members are compressed onto the electrical cable through the use of an anchor assembly. The anchor assembly is held in a compressed state through the use of frangible support elements. Once the electrical cable is in place within the coiled tubing, the user applies an external force to cause the support elements to fail, thereby releasing the anchor assembly from its compressed state. The anchor assembly contacts the inner wall of the coiled tubing, such that the weight of the electrical cable is transferred to coiled tubing.
    Type: Application
    Filed: October 15, 2009
    Publication date: April 22, 2010
    Applicant: Baker Hughes Incorporated
    Inventor: John J. Mack
  • Patent number: 7677321
    Abstract: Expandable tubulars for use in geologic structures, including methods for expanding the expandable tubulars, and methods of manufacturing them, include the use of an expansive energy storage component, which provides a self-expanding feature for the expandable tubulars.
    Type: Grant
    Filed: August 25, 2004
    Date of Patent: March 16, 2010
    Assignee: Dynamic Tubular Systems, Inc.
    Inventor: Jeffery A. Spray
  • Patent number: 7624797
    Abstract: The invention features the use of a shape memory material in a downhole application to provide an energy source for at least in part setting the tool. In a specific application the springs that set slips for a liner hanger are made from the shape memory material and easily pre-compressed below the transition temperature when the material has low modulus of elasticity. The tool is run into position where a heat source such as well fluids or a heater can bring the springs above the transition temperature to store a force. The tool is then independently released to allow the stored force to set the tool.
    Type: Grant
    Filed: July 14, 2006
    Date of Patent: December 1, 2009
    Assignee: Baker Hughes Incorporated
    Inventor: Peter J. Fay
  • Patent number: 7451827
    Abstract: A device for anchoring a casing into a well bore, the device comprising an anchor body mounted in a tool string and a plurality of radially expanding fingers that are mounted in a fingers assembly in a retracted position and they move to an extending position wherein the fingers extend radially from the tool string for anchor against the well bore wall.
    Type: Grant
    Filed: September 19, 2006
    Date of Patent: November 18, 2008
    Inventor: Gustavo Ignacio Carro
  • Patent number: 7090007
    Abstract: A centralizer for use in oil well wireline toolstrings comprising a central mounting rod and floating spring mechanisms between which a number of jointed centralizer arms are connected. The jointed centralizer arms have a section with a concave profile disposed near to their pivot points so that a closing force acting on the arms acts at a greater distance from the pivot, thereby increasing the closing moment and making the centralizer easier to draw into a borehole with a narrow cross-section. The floating spring mechanisms also have a linkage to the presser plate of the spring such that an axial force pulling the centralizer apparatus into a borehole is transferred directly into a force on the spring, thereby reducing the opening moment the springs exert on the centralizer arms.
    Type: Grant
    Filed: April 20, 2001
    Date of Patent: August 15, 2006
    Assignee: Sondex Limited
    Inventors: William P. Stuart-Bruges, Thomas L. Searight, Neil G. Harris
  • Patent number: 7086462
    Abstract: An anchor assembly for a downhole tool has upper and lower frictional engagement member for engaging with an inner wall of the casing. The upper frictional members are spring-tensioned, while the lower frictional engagement members slide, to certain degrees, in relation to a longitudinal axis of the anchor assembly. At the same time conical engagement between the lower frictional members and the supporting surface causes the lower frictional members to extend outwardly and engage the inner surface of the casing. As a result, the working tool, for instance a sand cutter secured to the anchor assembly is stabilized in the casing, and an even cut may be performed.
    Type: Grant
    Filed: June 4, 2004
    Date of Patent: August 8, 2006
    Assignee: Deltide Fishing and Rental Tools, Inc.
    Inventors: David J. Ruttley, Henry P. Boudet
  • Patent number: 7082991
    Abstract: In order to prevent premature separation of the slip and slip spring and to simplify production of the slip casing, a self-centering spring engageable with a packer tool slip is modified according to the present invention. A groove located at a lower center of the slip below the pocket of the slip cooperates with the spring to retain the spring against the slip and is centered within the pocket without requiring partitions or further welding of lugs to retain the springs.
    Type: Grant
    Filed: April 18, 2003
    Date of Patent: August 1, 2006
    Assignee: Team Oil Tools
    Inventors: Michael T. Sommers, Robert L. Brookey
  • Patent number: 7077214
    Abstract: A packer element has a biasing member incorporated with it. The element is either fabricated with the biasing element in a relaxed condition and then the element is stretched prior to insertion downhole or the element is created around the stressed biasing member and is held in that position until allowed to relax downhole. In either event the release of the element increases its diameter while shortening its length. Preferably, an advancing swage triggers the release to allow the element to expand as much as it can go or to the maximum relaxed diameter, whichever is larger. The swage then, preferably, drives the relaxed element toward the borehole wall or the casing.
    Type: Grant
    Filed: May 18, 2004
    Date of Patent: July 18, 2006
    Assignee: Baker Hughes Incorporated
    Inventors: Ray P. Vincent, Dennis G. Jiral
  • Patent number: 6968897
    Abstract: A tool is provided for preventing the rotation of a downhole tool or rotary pump stator, the tool comprising a tubular housing and a jaw which is biased radially outwardly from the tool to engage the casing wall for arresting tool rotation and providing significant stabilization of a rotary pump. In doing so, the tool housing moves oppositely to rest against the casing opposite the jaw. The tool housing and the downhole tool are thereby restrained and stabilized by the casing wall. The tool's jaw is released by opposite tool rotation. Preferably, the jaw is biased outwardly from the tool housing to a casing-engaging position by a torsional member, housed along the axis of the hinge of the jaw. The tool is released from the casing by opposite tool rotation which increasingly compresses the jaw toward the housing, twisting the torsional member into torsion, which then acts to urge the jaw outwardly again. Overextension of the jaw during assembly is prevented using cooperating stops in the jaw and the housing.
    Type: Grant
    Filed: May 9, 2003
    Date of Patent: November 29, 2005
    Assignee: MSI Machineering Solutions Inc.
    Inventors: John P. Doyle, Lynn P. Tessier, James L. Weber
  • Patent number: 6854521
    Abstract: A well completion system for creating a seal between a production tubing (30) and a well casing (34) positioned within a wellbore (32) comprises a production packer (46) that includes a section of the production tubing (30) and at least one seal element (60). The production tubing (30) is then positioned within the well casing (34) that lines the wellbore (32). An expander member (56) that is positioned within the production tubing (30) then travels longitudinally through the production packer (46) to expand the section of the production tubing (30) downhole that includes the seal element (60). This expansion creates a sealing and gripping relationship between the production tubing (30) and the well casing (34).
    Type: Grant
    Filed: March 19, 2002
    Date of Patent: February 15, 2005
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Ralph H. Echols, Tommie A. Freeman, John C. Gano
  • Patent number: 6688397
    Abstract: A system for expanding tubular structures. The system comprises a mandrel that is moved through the center of a tubular structure to increase the diameter of the tubular structure via deformation. The system utilizes an expansion device having a mandrel with multiple segments moved between a contracted state and an expanded state. In one embodiment, the mandrel segments are spring biased to permit a degree of independent movement of each mandrel segment with respect to the other mandrel segments.
    Type: Grant
    Filed: December 17, 2001
    Date of Patent: February 10, 2004
    Assignee: Schlumberger Technology Corporation
    Inventors: Joel McClurkin, Dennis L. Mills, Craig D. Johnson
  • Patent number: 6681853
    Abstract: A tool is provided for preventing the rotation of a downhole tool or rotary pump stator, the tool comprising a tubular housing and a jaw which is biased radially outwardly from the tool to engage the casing wall for arresting tool rotation and providing significant stabilization of a rotary pump. In doing so, the tool housing moves oppositely to rest against the casing opposite the jaw. The tool housing and the downhole tool are thereby restrained and stabilized by the casing wall. The tool's jaw is released by opposite tool rotation. Preferably, the jaw is biased outwardly from the tool housing to a casing-engaging position by a torsional member, housed along the axis of the hinge of the jaw. The tool is released from the casing by opposite tool rotation which increasingly compresses the jaw toward the housing, twisting the torsional member into torsion, which then acts to urge the jaw outwardly again.
    Type: Grant
    Filed: September 26, 2001
    Date of Patent: January 27, 2004
    Assignee: MSI Machineering Solutions Inc.
    Inventors: John P. Doyle, Lynn P. Tessier, James L. Weber
  • Publication number: 20030150610
    Abstract: In a device for sealing a bore hole and discharging drill cuttings and stripped excavation material, including a housing adapted to receive sealing elements and an opening capable of being connected to the bore hole, one side wall of the housing is provided with at least one opening for the connection of a haulage duct, wherein the housing end side facing the bore hole is equipped with a lockable, particularly screwable, sealing flange (13) for the detachable connection with a bore hole lining (11). The sealing flange (13) is rotationally and sealingly mounted within the housing and carries projections, in particular an annular brim (15) which is overlapped by a stop (14) of the housing.
    Type: Application
    Filed: April 7, 2003
    Publication date: August 14, 2003
    Inventors: Bernhard Ebner, Gerhard Weinberger, Bruno Reumuller, Barry Schmitke
  • Patent number: 6311778
    Abstract: A subterranean well tool which is manipulatable by a control mandrel between run-in and set positions within a wellbore having casing includes an assembly which provides a selectively operable lock to prevent premature activation of the assembly from the run-in position towards the set position until a predeterminable compressive load is carried through the well tool by the control mandrel to manipulate the assembly from a first initial position to an intermediate position and thereafter to a final extended position.
    Type: Grant
    Filed: April 18, 2000
    Date of Patent: November 6, 2001
    Assignee: Carisella & Cook Ventures
    Inventors: James V. Carisella, Robert B. Cook, Glenn M. Walls
  • Publication number: 20010015574
    Abstract: Improved method and system for accessing subterranean deposits from the surface that substantially eliminates or reduces the disadvantages and problems associated with previous systems and methods. In particular, the present invention provides an articulated well with a drainage pattern that intersects a horizontal cavity well. The drainage patterns provide access to a large subterranean area from the surface while the vertical cavity well allows entrained water, hydrocarbons, and other deposits to be efficiently removed and/or produced.
    Type: Application
    Filed: February 20, 2001
    Publication date: August 23, 2001
    Applicant: CDX Gas, LLC, a Texas limited liability company
    Inventor: Joseph A. Zupanick
  • Patent number: 6039129
    Abstract: Locking system (196) is provided for selectively locking an external sleeve (76) to a main body (74) of a downhole tool (14). Locking system (196) comprises a pair of opposed holes (198) formed in the main body (74). The holes (198) capture respective locking balls (200). A channel (210) extends from each hole (198) longitudinally about the outer surface of the main body (74). A spring (206) held within the main body (74) acts to push the balls (200) out of holes (198). Openings (212) are also formed in the sleeve (76) and disposed so that the balls (200) can protrude therethrough and contact the inner circumferential surface (28) of a drive sub (12) by virtue of the bias of spring (206). When the internal diameter of the drive sub (12) is relatively small, the balls (200) are pushed inwardly against the spring (206) and reside, at least partially, within holes (198). This prevents the balls from moving longitudinally about channels (210) thereby locking the sleeve (76) to the main body (74).
    Type: Grant
    Filed: February 27, 1998
    Date of Patent: March 21, 2000
    Assignee: DHT Technologies, Ltd.
    Inventor: Galvin Thomas McLeod
  • Patent number: 5979550
    Abstract: Apparatus is provided for stabilizing a PC pump suspended from production tubing. The stabilizing apparatus is connected to the pump and comprises a tubular body having a cylindrical wall, a longitudinal bore contiguous with the production tubing and three or more circumferentially-spaced linkages are disposed in longitudinal slots formed in the exterior of the tubular body. Each linkage comprises at least a passive and an active link pivotally connected end-to-end in series, the passive link being pivoted from the body. An annulus is formed within the cylindrical wall and contains a longitudinally movable annular piston pivotally connected to the active link. The annulus is connected to the bore so that the piston is pressurized dynamically with fluid from the bore. Fluid pressure drives the piston, actuating the active link, thereby causing the linkage to expand radially outwards, the radial force being proportional with the fluid pressure.
    Type: Grant
    Filed: February 24, 1998
    Date of Patent: November 9, 1999
    Assignee: Alberta Ltd.
    Inventor: Lynn P. Tessier
  • Patent number: 5771969
    Abstract: A Helical Bearing Anchor and Catcher for the insertion into a well conduit to anchor well equipment in both linear directions and rotation in one direction. The device has a helical groove in either the mandrel or the drag body to accommodate the helical bearing. The helical bearing has holes within it to accommodate shear pins. The shear pins translate the linear motion from the helical bearing to the drag body. The drag body has a conical surface which contacts slips to drive them outward and grip the inner well conduit wall. Once the slip grips the inner well conduit wall the mandrel and the attached well equipment can not move linearly in either direction or rotate further in the setting direction within the well conduit. The anchor catcher can be unset by rotating the mandrel in the direction opposite to the setting direction. The drag body, pins, and helical bearing all move downward away from the slip.
    Type: Grant
    Filed: November 1, 1995
    Date of Patent: June 30, 1998
    Assignee: Excalibre Oil Tools Ltd.
    Inventor: Thomas William Garay
  • Patent number: 5685370
    Abstract: An assembly for a production string with a downhole pump is disclosed which makes use of the polished bore in the top of the liner already installed in the wellbore. Lugs on the assembly align themselves with longitudinal grooves in the top of the liner assembly as an antirotation feature for when the downhole pump is operated. A signaling assembly, involving a collet which can be ultimately released, gives the surface personnel the feedback they need to know that the assembly has been set in the proper place in the top of the liner string, as opposed to another location in the wellbore. Seals, preferably stacks of opposed chevron seals, can be used to bridge the gap between the assembly and the seal bore at the top of the liner.
    Type: Grant
    Filed: October 31, 1995
    Date of Patent: November 11, 1997
    Assignee: Baker Hughes Incorporated
    Inventors: Sidney K. Smith, Jr., Olav Revheim
  • Patent number: 5579829
    Abstract: A keyless latch assembly automatically aligns and fixes the axial and circumferential position of a whipstock within a surrounding casing joint. Alignment and fixing of the whipstock ensures proper engagement and orientation of a drill bit relative to an access window formed in the casing wall. Spring loaded latches in the assembly register with and extend into corresponding receiving recesses formed on the inner surface of the casing joint. The recesses, which are spaced circumferentially around the interior of the casing joint, contain differing profiles that uniquely mate with corresponding profiles on the latches. The position of the latches relative to the recesses determines the amount of radial latch movement which controls the anchoring and orientation of the assembly within the casing. Confirmation of correct axial location and proper circumferential orientation may be made by surface monitoring of the setting string weight and turning torque.
    Type: Grant
    Filed: June 29, 1995
    Date of Patent: December 3, 1996
    Assignee: Baroid Technology, Inc.
    Inventors: Laurier E. Comeau, Elis Vandenberg
  • Patent number: 5390735
    Abstract: A locking system which includes landing nipples connectable in a well flow conduit and a lock mandrel to which well flow control devices are connectable. The landing nipples have an unrestricted full bore flow passage with a locking groove and profiled locating recesses with one square shoulder in the flow passage. The lock mandrel may be lowered through full bore landing nipples to automatically locate in the full bore landing nipple in which the lock mandrel is to be operated to lock and expand a seal system to sealingly engage the landing nipple. The lock mandrel utilizes locking lugs engageable in the landing nipple locking grooves. The automatic locator device has locating keys with one or two square shoulders, which locate the lock mandrel in a landing nipple. After operating, the lock mandrel is releasably retained locked and sealed in the landing nipple. The lock mandrel may be operated to disengage the landing nipple and permit the seal system to retract for retrieval from the landing nipple.
    Type: Grant
    Filed: December 7, 1992
    Date of Patent: February 21, 1995
    Assignee: Halliburton Company
    Inventor: Jimmie R. Williamson, Jr.
  • Patent number: 5119875
    Abstract: A system for sealing and anchoring reeled tubing in a landing nipple in well tubing. An hydraulically actuated lock mandrel having a locator is connected on the reeled tubing and lowered inside the tubing and into the landing nipple. The lock mandrel sealingly engages the landing nipple and the locator stops downward movement of the lock mandrel in the landing nipple. Pressure applied in the reeled tubing actuates the lock mandrel to lock and anchor the reeled tubing in the landing nipple. On sufficient reduction of pressure in the reeled tubing, the lock mandrel automatically unlocks from the landing nipple. Two embodiments of the lock mandrel are disclosed, each utilizing a different type of locator.
    Type: Grant
    Filed: January 7, 1991
    Date of Patent: June 9, 1992
    Assignee: Otis Engineering Corporation
    Inventor: Ray A. Richard
  • Patent number: 5082062
    Abstract: A well tool having an anchor device, straddle packers above and below a port and an internal valve which are operated by longitudinal motion in an inflatable packer device. The well tool anchor is armed by a hydraulic operated plug and set upon downward motion in a locating profile groove in a well bore. The tool when attached to a string of tubing can be filled with cement slurry and downward motion used to anchor the well tool in a profile groove in an inflatable packer; to set the straddle packers above and below an access port on an inflatable packer; and then to open a valve to admit cement slurry to the inflatable packer. After filling the inflatable packer with cement slurry, an upward motion is used to close the valve, unset the straddle packers and release the anchor to move to another location where the operation can be repeated. At the conclusion operations, a circulation valve is opened by pressure to reverse out cement slurry from the tubing string.
    Type: Grant
    Filed: September 21, 1990
    Date of Patent: January 21, 1992
    Assignee: CTC Corporation
    Inventors: Edward T. Wood, David H. Surgnier, Robert T. Brooks
  • Patent number: 4997038
    Abstract: A well tool locking assembly comprising a lock mandrel having locking keys adapted to releasably engage a locking annulus within a well bore, and a latch assembly adapted to maintain the lock mandrel in a desired positional relation to the locking annulus until such time as the locking keys engage the locking annulus; the latch assembly further comprising at least one rotatably mounted, outwardly biased pawl adapted to engage the locking annulus, and a shear pin disposed below the pawl, the pawl being adapted to rotate downwardly into contact with the shear pin whenever the pawl is forced into contact with the upper portion of the locking annulus, the shear pin being further adapted to shear whenever the force exerted on it by the pawl exceeds a predetermined maximum.
    Type: Grant
    Filed: November 27, 1989
    Date of Patent: March 5, 1991
    Assignee: Otis Engineering Corporation
    Inventor: William R. Welch
  • Patent number: 4960173
    Abstract: A mechanism for accurately positioning a well tool in axially concentric relationship to a well conduit comprises a housing having a plurality of stabilizer linkages mounted thereon with one end of each linkage being pivotally secured to the housing and the other end free to move in an axial direction. A compression spring engages a force transmitting connection to the other ends of the stabilizer linkages to bias same to a radially expanded position engaging the conduit wall. The connection between the compression spring and the stabilizer linkage includes two telescopically related sleeve elements which are secured together by a shear screw. In the event that the stabilizer linkage becomes stuck in the well, upward jarring movements of the housing will shear the shear screw and permit the stabilizer linkages to collapse radially inwardly and thus permit removal from the well.
    Type: Grant
    Filed: October 26, 1989
    Date of Patent: October 2, 1990
    Assignee: Baker Hughes Incorporated
    Inventors: Michael L. Cognevich, Steven H. Shirk
  • Patent number: 4921044
    Abstract: Disclosed are selective and no-go systems for injecting fluids in a well and a system for orienting a tool in a landing nipple in a well conduit, which is utilized in the selective set injection system. Each injection system is comprised of a land nipple, an injection mandrel having openings for flow and an orientor. The landing nipples have wall openings for flow and orienting means which are engaged by the mandrel orientor as the mandrel is lowered into the landing nipple, orienting the mandrel and aligning the mandrel flow openings with the nipple flow openings. There are orifices in the flow openings in both mandrels to control injected flow through the mandrel. The system for orienting a tool in a landing nipple has an orientor attachable to a well tool. This orientor and the selective orientor have lugs which engage an orienting sleeve in the nipple and are guided into slots when lowered into the sleeve.
    Type: Grant
    Filed: March 9, 1987
    Date of Patent: May 1, 1990
    Assignee: Otis Engineering Corporation
    Inventor: Andrew G. Cooksey
  • Patent number: 4896721
    Abstract: An improved locator shifter tool useful in a string of well operating tools. When the tool string is lowered into compatible internal profiled grooving in a well conduit, profiled keys on the locator shifter tool move outwardly into the profiled grooving, stopping downward movement of the shifting tool and tool string. A downward force on the tool string will now operate the locator shifter tool to lock connected in the profiled grooving in the conduit. To disconnect the locator shifter from the profiled grooving, an upward force on the tool string will operate the locator shifter tool to cam the keys inwardly from the conduit grooving, disconnecting the locator shifter and tool string for raising through the conduit back to the surface.
    Type: Grant
    Filed: March 14, 1989
    Date of Patent: January 30, 1990
    Assignee: Otis Engineering Corporation
    Inventor: William R. Welch
  • Patent number: 4886121
    Abstract: A new wellhead housing structure which utilizes identical units of a unique wellhead housing of selected internal diameter and pressure rating. Each wellhead housing utilizes a new flexible bowl ("flexbowl") hanger support ring which may be installed and removed as desired during assembly of the wellhead structure during completion of the well. Each wellhead housing forms an internal circumferential groove to receive the flexible bowl hanger support ring in position to receive and support different kinds and sizes of hangers for casing, protective sleeves, and the like. The flexible bowl support ring is drawn into a contracted position. The contracted support ring will pass through the wellhead housing and is seated by a setting tool. Subsequently, a tubing or casing hanger may be landed upon the support ring and supported by the support ring which serves the same functions as the bowl seat in a conventional wellhead housing. The support ring may be removed by a removal tool.
    Type: Grant
    Filed: December 5, 1988
    Date of Patent: December 12, 1989
    Assignee: Seaboard-Arval Corporation
    Inventors: Albert C. Demny, J. Matt Harwell, Reggie H. Etheridge, Robert E. Bush
  • Patent number: 4852647
    Abstract: A gas generating type fracturing tool includes a propellant charge and an ignitor for initiating combustion of the propellant. When combustion starts, a pressure buildup inside the tool manipulates a brake or drag acting against the inner casing wall to retard upward movement of the tool. A shear pin fails allowing a spring to move an element into frictional engagement with the casing string.
    Type: Grant
    Filed: September 19, 1988
    Date of Patent: August 1, 1989
    Inventor: Henry H. Mohaupt
  • Patent number: 4846270
    Abstract: A well tubing extension joint including a trash barrier. A top sub having an internal locking recess is connected on the upper end of a well packer mandrel. A trash barrier is connected on the lower end of an upper tubing string for releaseably engaging the top sub to permit the upper tubing string to move longitudinally relative to the packer and packer top sub. The trash barrier includes a body having locking collet fingers for releaseably locking the body in the top sub at the locking recess. The body has external rings seals for sealing with the top sub and an internal wiper seal for sealing with the upper tubing string extending through the body.
    Type: Grant
    Filed: April 7, 1988
    Date of Patent: July 11, 1989
    Assignee: Otis Engineering Corporation
    Inventors: John R. Setterberg, Jr., Robert D. Harrison, Jr.