Central Member With Pre-set Packer Or Plug In Same Conduit Patents (Class 166/114)
  • Patent number: 9732583
    Abstract: A method of completing a wellbore is disclosed that in one non-limiting embodiment includes: placing a lower completion assembly that includes a flow device to provide fluid communication between the lower completion assembly and a production zone associated with the lower completion assembly; placing an isolation assembly with a packer above the lower completion assembly for isolating an annulus between the lower completion assembly and the wellbore; placing a flow restriction device above the packer; setting the flow restriction device in the annulus to restrict flow of fluid through the annulus; and setting the packer after setting the flow restriction device.
    Type: Grant
    Filed: January 23, 2015
    Date of Patent: August 15, 2017
    Assignee: BAKER HUGHES INCORPORATED
    Inventors: John E. Britt, David S. Bishop, Kirby G. Schrader, Marc N. Samuelson
  • Patent number: 9546530
    Abstract: A convertible downhole device comprises at least one sacrificial material to provide two or more configurations so that two or more different operations or functions are performable by the downhole device, one in which the sacrificial material is fully intact and another in which the sacrificial material is at least partially removed or disappeared. The sacrificial material may be removable through any suitable method or device, such as by contacting with a fluid, by temperature, by pressure, or by combustion, ignition, or activation of a fusible or energetic material, or crushing or breaking up of a frangible material. Upon removal of the sacrificial material, the downhole device has at least one additional configuration so that at least a second operation can be performed by the downhole device.
    Type: Grant
    Filed: November 18, 2013
    Date of Patent: January 17, 2017
    Assignee: BAKER HUGHES INCORPORATED
    Inventor: Darin H. Duphorne
  • Patent number: 9518441
    Abstract: A packing element comprising a tube having a longitudinal length. The tube includes a first end and a second end opposing the first end, an external portion including a plurality of circumferential ribs, and an internal portion opposing the external portion. The internal portion of the tube includes i) a central portion extending along a portion of the longitudinal length of the tube between the first end and second end of the tube, wherein the central portion includes a relief, ii) a first tapered portion radially tapering along the longitudinal length from the central portion towards the first end, and iii) a second tapered portion tapering along the longitudinal length from the central portion towards the second end.
    Type: Grant
    Filed: May 7, 2013
    Date of Patent: December 13, 2016
    Assignee: FREUDENBERG OIL & GAS, LLC
    Inventor: Santiago Galvez Porta
  • Patent number: 9506330
    Abstract: Methods and apparatus are provided for conducting multiple successive same-location firings of a number of shaped charges carried by a perforating gun that is lowered into the wellbore and precisely positioned to align its charges with the penetration created by the first fired-charges in order to produce deeper and larger diameter penetrations that result in enhanced hydraulic fracturing of the reservoir and increased gas production from the completed well.
    Type: Grant
    Filed: July 18, 2013
    Date of Patent: November 29, 2016
    Assignee: Sauda Arabian Oil Company
    Inventor: Al-Waleed Abdullah Al-Gouhi
  • Patent number: 9359873
    Abstract: A method for inserting a conduit into a wellbore includes inserting the conduit into the wellbore until an upper end of a predetermined section thereof is disposed proximate a selected position in the wellbore and reducing pressure in the conduit to a predetermined pressure.
    Type: Grant
    Filed: December 26, 2013
    Date of Patent: June 7, 2016
    Assignee: Reelwell, A.S.
    Inventor: Ola Vestavik
  • Patent number: 9309752
    Abstract: A buoyancy fluid is sealed in an interior central bore of a completion liner with a plug assembly in the interior central bore. The buoyancy fluid has a lower density than the fluid contained in the wellbore. The buoyancy fluid reduces the force, and thus friction, at the interface between the liner and the bottom of the wellbore while the completion liner is being run to final depth. When the buoyancy fluid is no longer needed, the plug assembly can be withdrawn uphole from the completion liner and to the surface.
    Type: Grant
    Filed: April 25, 2012
    Date of Patent: April 12, 2016
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Clifford Lynn Talley, Ramon Eduardo Melean
  • Patent number: 9234393
    Abstract: An apparatus (10) for coupling a monobore riser or lubricator system (11) to a dual bore (12) subsea well, the apparatus has a rotatable bore selector (30) within a housing (20). The bore selector has at least one conduit (35) to provide through bore communication between the riser bore or lubricator (11) and selectively at least one or other of main (60) and annulus (70) bores in the dual bore (12) well. The bore selector in a first position connects the conduit between the riser or lubricator bore and the main bore, and in a second position connects the conduit between the riser or lubricator bore and the annulus bore. The rotatable selector can be offset or set at a tilt angle of up to ±5° with respect to the length of the apparatus.
    Type: Grant
    Filed: January 24, 2007
    Date of Patent: January 12, 2016
    Assignee: HELIX WELL OPS (U.K.) LIMITED
    Inventors: Jonathan Paul Edwards, Alexander Jeffrey Burns
  • Patent number: 9062521
    Abstract: A method and apparatus for commingling sweet gas and sour gas production in a gas well having an upper sweet zone and a lower sour zone. The apparatus comprises a commingling valve which prevents cross flow of sour fluids into the sweet zone or casing annulus.
    Type: Grant
    Filed: April 10, 2012
    Date of Patent: June 23, 2015
    Assignee: RAISE PRODUCTION INC.
    Inventor: Geoff Steele
  • 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: 20150068727
    Abstract: A subterranean tool can drop multiple objects to landing locations in a tubular string. The tool can keep at least one ball out of the fluid stream until ready for release. A dart or wiper plug can be kept in the fluid stream with an open bypass until axial mandrel movement allows release of the plug or dart. The tool is rotationally locked at a lower location for run in and then can rotationally lock at an upper location upon release of the dart or ball shifting relative rotation capabilities to different members. Axial movement that releases the dart also aligns a ball with a decreasing depth groove so that relative part rotation can cam the ball against a leaf spring detent and into the mandrel flow path.
    Type: Application
    Filed: September 6, 2013
    Publication date: March 12, 2015
    Applicant: Baker Hughes Incorporated
    Inventors: Christopher R. Hern, Daniel C. Ewing, Matthew J. Krueger, Jason P. Lacombe, Travis J. Ansohn, Steve M. Cortez, Michael Ramon
  • Publication number: 20140367116
    Abstract: A production sleeve assembly for use downhole includes a fluid pathway configured to provide fluid communication between an exterior of a wellbore tubular and an interior of the wellbore tubular through a chamber, a flow restriction disposed in the fluid pathway, and a valve disposed in series with the flow restriction in the fluid pathway. The valve comprises a rupture disk, and a plug releasably engaged in the chamber in series with the rupture disk. The valve is configured to allow production from the exterior of the wellbore tubular to the interior of the wellbore tubular through the chamber once the rupture disk is actuated, and the valve is configured to release the plug from the chamber when the rupture disk is actuated and the pressure within the exterior of the wellbore tubular is greater than the pressure within the interior of the wellbore tubular.
    Type: Application
    Filed: August 28, 2014
    Publication date: December 18, 2014
    Inventor: Jean Marc Lopez
  • Publication number: 20140262207
    Abstract: A production sleeve assembly for use downhole comprises a fluid pathway configured to provide fluid communication between an exterior of a wellbore tubular and an interior of the wellbore tubular, a flow restriction disposed in the fluid pathway, and a valve disposed in series with the flow restriction in the fluid pathway. The valve comprises: a rupture disk and a plug releasably engaged in the fluid pathway in series with the rupture disk. The valve is configured to allow production from the exterior of the wellbore tubular to the interior of the wellbore tubular through the chamber without producing past the plug once the rupture disk is actuated.
    Type: Application
    Filed: February 15, 2013
    Publication date: September 18, 2014
    Applicant: HALLIBURTON ENERGY SERVICES, INC
    Inventor: Jean Marc Lopez
  • Publication number: 20140216756
    Abstract: A rupture disc assembly and a float tool incorporating the rupture disc assembly is disclosed. The rupture disc assembly may include a rupture disc assembly comprising a rupture disc, an upper tubular portion and a lower tubular portion, and a securing mechanism for holding the rupture disc between the upper and lower tubular portions. A float tool for creating a buoyant chamber in a casing string may include the rupture disc assembly and a sealing device for sealing the lower end of the casing string, the buoyant, sealed chamber may be created there between. In operation, applied fluid pressure causes the rupture disc to move downward. The rupture disc may be shattered by contact with a surface on the lower tubular portion. Full casing internal diameter may be restored in the region where the rupture disc formerly sealed the casing.
    Type: Application
    Filed: June 28, 2013
    Publication date: August 7, 2014
    Inventors: Donald Getzlaf, Marty Stromquist, John Ravensbergen, David Devlin, Doulgas Braden, Travis Harris
  • Publication number: 20140209306
    Abstract: A wellbore treatment tool for setting against a constraining wall in which the wellbore treatment tool is positionable, the wellbore treatment tool including: a tool body including a first end formed for connection to a tubular string and an opposite end; a no-go key assembly including a tubular housing and a no-go key, the tubular housing defining an inner bore extending along the length of the tubular housing and an outer facing surface carrying the no-go key, the no-go key configured for locking the no-go key and tubular housing in a fixed position relative to the constraining wall, the tubular housing sleeved over the tool body with the tool body installed in the inner bore of the tubular housing; and a sealing element encircling the tool body and positioned between a first compression ring on the tool body and a second compression ring on the tubular housing, the sealing element being expandable to form an annular seal about the tool body by compression between the first compression ring and the second c
    Type: Application
    Filed: April 5, 2013
    Publication date: July 31, 2014
    Inventors: John Hughes, Ryan Dwaine Rasmussen, James Wilburn Schmidt
  • Publication number: 20140034310
    Abstract: A method of cementing a liner string into a wellbore includes deploying a liner string into a wellbore; pumping cement slurry into a workstring; and pumping a dart through the workstring, thereby driving the cement slurry into the liner string. The dart engages a first wiper plug and releases the first wiper plug from the workstring. The dart and engaged first wiper plug drive the cement slurry through the liner string and into an annulus formed between the liner string and the wellbore. The dart and engaged first wiper plug land onto a first fracture valve. The dart releases a first seat into the first wiper plug. The dart engages a second wiper plug connected to the first fracture valve and releases the second wiper plug from the first fracture valve.
    Type: Application
    Filed: July 30, 2013
    Publication date: February 6, 2014
    Applicant: WEATHERFORD/LAMB, INC.
    Inventor: Clayton R. ANDERSEN
  • Patent number: 8459344
    Abstract: An internal bidirectional tubing plug is adapted for insertion into a tubing string for sealing the tubing string internally while running the tubing into a fluid filled well. The tubing plug is comprised of a body having an inner surface with a recess; the recess holds petals and a keystone petal that are held by a cork that is held by a nut. At depth the tubing is filled with well fluid and the tubing plug is released at a predetermined hydraulic pressure, and the pieces are pumped to bottom or the pieces are circulated out of the well.
    Type: Grant
    Filed: August 11, 2010
    Date of Patent: June 11, 2013
    Inventor: William Bundy Stone
  • Publication number: 20120312545
    Abstract: Systems include a well having a production casing and a production tubing positioned therein, forming an annulus there between. A packer is positioned in the annulus at a position sufficient to separate the annulus into a first portion and a second portion. The well further includes a tie-back conduit positioned in the first portion of the annulus and configured to allow heat transfer between a working fluid flowing through the first portion of the annulus and a production fluid flowing through the production tubing, thus separating the circulating working fluid from fluids in the second portion of the annulus. A working fluid loop is fluidly connected to the first portion of the annulus. Co-production methods, methods of modeling, and computer-readable media including the methods of modeling are disclosed.
    Type: Application
    Filed: June 8, 2012
    Publication date: December 13, 2012
    Inventors: P. V. Suryanarayana, Parveen Sachdeva, Ismail Ceyhan, Gary Allen Ring
  • Publication number: 20100089569
    Abstract: A separator for downhole measuring during sampling in a subterranean formation. The separator allows for mixed fluid phases to be separated while flowing formation fluid therethrough.
    Type: Application
    Filed: March 19, 2007
    Publication date: April 15, 2010
    Inventors: Anthony H. van Zuilekom, Mark A. Proett, Ronald E. Cherry
  • Publication number: 20090223681
    Abstract: A zone isolation assembly for a fluid monitoring system in an existing subsurface well includes a fluid receiving pipe, a docking receiver, a docking apparatus and a first sealer. The fluid receiving pipe includes a pipe interior and a fluid inlet structure. The fluid receiving pipe receives a fluid through the fluid inlet structure into the pipe interior. The docking receiver is connected to the fluid receiving pipe. The docking apparatus moves between (i) a docked position wherein the docking apparatus is docked with the docking receiver, and (ii) an undocked position wherein the docking apparatus is undocked with the docking receiver. The first sealer is spaced apart from the docking apparatus. In certain embodiments, the first sealer selectively forms a fluid-tight seal between the fluid receiving pipe and the casing to divide the fluid zone into a first zone and a spaced apart second zone.
    Type: Application
    Filed: February 25, 2009
    Publication date: September 10, 2009
    Inventors: Noah R. Heller, Peter F. Morltzburke
  • Publication number: 20090194293
    Abstract: Apparatus, assembly and process for allowing gas lift operations to be conducted along a relatively long perforated interval below a packer in a subterranean well. An elongated segregation member is lowered into locking engagement with a bypass mandrel secured to a tubing string above the packer. This segregation member is configured and dimensioned to define two fluid flow paths. A first flow path extends from the surface of the earth through the annulus formed between the tubing string above the packer and casing secured in the well, the bypass mandrel, a bore through a portion of the segregation member and the interior of the tubing string below the packer. A second flow path extends from the subterranean region penetrated by the well through the annulus formed between the tubing string below the packer and casing secured in the well, the annulus between the segregation member and the packer, and the interior of the tubing string above the packer.
    Type: Application
    Filed: February 4, 2008
    Publication date: August 6, 2009
    Applicant: MARATHON OIL COMPANY
    Inventors: Pearl E. Stephenson, William D. Holmes
  • Publication number: 20090114383
    Abstract: A gas lift production apparatus is provided for use in flushing and snubbing well operation. The apparatus comprises upper production string and lower production string. The upper production string includes at least one side pocket mandrel carrying a gas lift valve, tubular strings connected with every side pocket mandrel, a sliding sleeve installed as part of the production string below side pocket mandrels and a latch seal assembly threaded in the tubular string below the sliding sleeve. The lower production string includes a single bore packer below the latch seal assembly, tubular strings, a landing nipple and a bell mouth at the bottom of the production string. The upper production string are run in and removed as a single unit from the packer which is anchored within the well casing. It is emphasized that this apparatus is provided with three functions such as producing a gas lift well, flushing well and snubbing well operation.
    Type: Application
    Filed: October 13, 2008
    Publication date: May 7, 2009
    Inventors: Yu Lei, Yong Li, Qiang Wang, Zhenghua Wu, Zhimin Xu, Zhensong Wang, Meijuan Suo
  • Publication number: 20090114385
    Abstract: A tubular introduced into a wellbore is perforated at pre-selected locations after the tubular has been cemented into place. The locations of the perforations are determined by modeling inflow performance of a stimulation fluid within the formation. The inflow performance parameters include reservoir porosity, permeability, pressure, damage skin and intrusion depth, perforation diameter and penetration depth or perforation crushed zone damage and intrusion depth.
    Type: Application
    Filed: September 25, 2008
    Publication date: May 7, 2009
    Inventor: Peter Lumbye
  • Patent number: 6840328
    Abstract: An apparatus, system, and method useful for discouraging the extrusion of at least one deformable member of a device into a space adjacent to the deformable member when the device is disposed within a borehole and the deformable member extends from the device to the borehole wall involves at least one expandable member disposed upon the device. The expandable member is expandable into the annulus to reduce the width thereof and retractable therefrom to allow movement of the device within and out of the borehole and redeployment of the expandable member. The apparatus, system, and method are particularly suited for limiting the extrusion of packer elements.
    Type: Grant
    Filed: November 25, 2002
    Date of Patent: January 11, 2005
    Assignee: Schlumberger Technology Corporation
    Inventors: L. Michael McKee, David M. Eslinger, Stephen D. Hill
  • Patent number: 6408942
    Abstract: A one-trip squeeze pack system has a unique service seal unit design using concentric tubing, with the inner tubing an extension of the traditional wash pipe and is later used as the production tubing. The inner tubing contains a ported sub which can be isolated in various positions within the outer tubing by way of seals located above and below the ported sub. This seal unit is raised and lowered on the production string and isolated at various positions in order to accomplish setting the packer, running a packing job, reversing out packing fluid, and receiving production fluids.
    Type: Grant
    Filed: April 11, 2001
    Date of Patent: June 25, 2002
    Assignee: Halliburton Energy Services, Inc.
    Inventor: William J. Martin
  • Patent number: 6241013
    Abstract: A one-trip squeeze pack system has a unique service seal unit design using concentric tubing, with the inner tubing an extension of the traditional wash pipe and is later used as the production tubing. The inner tubing contains a ported sub which can be isolated in various positions within the outer tubing by way of seals located above and below the ported sub. This seal unit is raised and lowered on the production string and isolated at various positions in order to accomplish setting the packer, running a packing job, reversing out packing fluid, and receiving production fluids.
    Type: Grant
    Filed: August 25, 1998
    Date of Patent: June 5, 2001
    Assignee: Halliburton Energy Services, Inc.
    Inventor: William J. Martin
  • Patent number: 6095245
    Abstract: A repositionable apparatus for perforating and gravel packing an underground well uses gravity or other means to reposition the apparatus instead of a conventional wireline or work string attached to a rig. Perforating and packing can be accomplished without a rig after the apparatus is initially placed and set in the well. One embodiment of the inventive apparatus uses a perforating gun assembly, a connected ported sub above the gun assembly, a translating annulus packer above the ported sub, a circumferential screen located above the packer, blank pipe connected above the screen, an openable port above the blank tubular pipe, and a second translating annulus packer attached to the blank tubular.
    Type: Grant
    Filed: October 7, 1999
    Date of Patent: August 1, 2000
    Assignee: Union Oil Company of California
    Inventor: Matthew J. Mount
  • Patent number: 5507343
    Abstract: A method and apparatus for repairing or isolating holes, ruptures, splits or old perforations in marginal oil and gas wells from producing perforations. The apparatus includes two packer assemblies, a tube assembly and a slip assembly. The packer assemblies further include expandable packer elements and a vent cone mounted on a mandrel. The mandrels of the packer assemblies are connected to opposite ends of the tube assembly. The slip assembly is housed on the mandrel of one packer assembly and is used to create a positive mechanical set of the repair apparatus when positioned over the damaged area. Once the packer apparatus is positioned and the packer elements expanded, gas from producing formations flow to the wellhead through the tube assembly without interfering with the operation of down-hole pumps. The length of the gas vent packer apparatus can be varied between the packer elements depending upon the depth of damaged casing requiring repair or isolation.
    Type: Grant
    Filed: October 5, 1994
    Date of Patent: April 16, 1996
    Assignee: Texas BCC, Inc.
    Inventors: Wayne Carlton, Enrique Chavira, O. M. Bell
  • Patent number: 5348092
    Abstract: A sand control screen installation for a well includes an auger type sand control screen connected to a length of smooth-walled tubing which is disposed in a tubing seal support sub connected to a packer and having a frangible coupling interconnecting the tubing with the sub whereby the assembly may be pre-installed in a wellbore, the packer set and the tubing decoupled from the sub for reciprocation relative thereto while a fluid tight seal is maintained between portions of the wellbore to prevent underbalanced or overbalanced fluid flow during installation of the sand control screen. In an alternate embodiment, the tubing seal support sub has suitable lock mechanism for installation in a landing nipple in wells with pre-installed tubing strings and packers.
    Type: Grant
    Filed: March 26, 1993
    Date of Patent: September 20, 1994
    Assignee: Atlantic Richfield Company
    Inventors: H. Mitchell Cornette, Stephen E. Morrison, Michael J. Barton
  • Patent number: 5318117
    Abstract: A two-way retrievable packer plug is installed in the production bore of a flow conductor by straight insertion, and is retrieved by a one trip straight pull operation. The plug assembly includes a core mandrel which is enclosed within a tubular latch mandrel on which an annular seal assembly is mounted for sealing engagement against the production bore of a flow conductor. A latch key is yieldably biased by a coil spring for interlocking engagement with a latch retainer lug carried on a landing receptacle attached to the flow conductor. The latch key is moveable from a radially extended position in which it is engageable against the latch retainer lug so that the latch key is blocked against axial displacement relative to the landing receptacle as the plug mandrel is inserted into or withdrawn out of the flow conductor.
    Type: Grant
    Filed: December 22, 1992
    Date of Patent: June 7, 1994
    Assignee: Halliburton Company
    Inventors: Ralph H. Echols, III, Colby M. Ross
  • Patent number: 4951746
    Abstract: A latching seal unit for use on a tubing string in a well bore for connecting the tubing string into a well packer having a receiving head provided with one or more latching lugs, the seal unit including a top sub connectable on a tubing string, a tubular locator body connected with the top sub, a latching collet cage having straight-slots mounted on the locator body formed of circumferentially spaced collet fingers defining longitudinal slots and guide surfaces providing entrances into the slots and a latching recess along each of the longitudinal slots, the longitudinal slots being sized to form an interference fit with the latching lugs in the well packer, and the latching recesses being sized to receive the latching lugs, a tubular seal body connected with the locator body, annular seal elements assemblies on the seal body for sealing with a packer bore, and a mule-shoe guide on the seal body below the seal element assemblies.
    Type: Grant
    Filed: April 13, 1989
    Date of Patent: August 28, 1990
    Assignee: Otis Engineering Corporation
    Inventor: John R. Setterberg, Jr.
  • Patent number: 4944348
    Abstract: Gravel packing systems are disclosed which permit sand fill to be reverse circulated out of a well without tripping the gravel packing system itself out of the well. The gravel packing system can be utilized with a sump packer. An outer seal assembly is constructed to be received in a bore of the sump packer. The seal assembly has a seal assembly bore therethrough which receives a lower end of a wash pipe. A wash pipe extension is partially received in the lower end of the seal assembly bore and extends downward below the seal assembly. The wash pipe extension is communicated with the wash pipe. A releasable retaining structure is operably associated with the wash pipe and the wash pipe extension and initially retains the wash pipe in the seal assembly bore. Subsequently, the wash pipe extension is released upon upward movement of the wash pipe. Methods of gravel packing are also disclosed.
    Type: Grant
    Filed: November 27, 1989
    Date of Patent: July 31, 1990
    Assignee: Halliburton Company
    Inventors: Thomas G. Whiteley, Travis W. Cavender
  • Patent number: 4907651
    Abstract: A metal-to-metal packer seal for downhole use in a well that operates in a deleteriously corrosive atmosphere. The seal is formed by the cooperating ends of two pipe sections, one of which is vertically positioned in a well with an upwardly facing metallic socket. The corresponding upper pipe section includes a connector which is lowered onto the socket and carries with it at least one, and preferably a plurality of metal rings which are extruded to form a corrosive resistant circular seal between the engaged pipe socket and pipe connector.
    Type: Grant
    Filed: December 21, 1987
    Date of Patent: March 13, 1990
    Assignee: Texaco Inc.
    Inventor: Sami Bou-Mikael
  • Patent number: 4805696
    Abstract: A hydraulic release tubing seal divider for connecting lower and upper tubing strings together in a wellbore, including an inner housing assembly connected with one of the tubing string and middle and outer housing assemblies connected with the other of the tubing strings, including hydraulically operable locking structure carried by the middle and outer housing assemblies for locking the tubing strings together while the strings are run into a well, and for hydraulically releasing the middle and outer housing assemblies from the inner housing assembly to permit relative telescopic movement in the well between the upper and lower tubing strings at the tubing seal divider.
    Type: Grant
    Filed: February 3, 1988
    Date of Patent: February 21, 1989
    Assignee: Otis Engineering Corporation
    Inventor: William D. Henderson
  • Patent number: 4705111
    Abstract: A tubing assembly is disclosed for providing fluid communication and wireline access from a tubing string through a tubing remnant extending above a packer set within a casing. In combination, the tubing assembly comprises a funnel guide connectable to the lower portion of the tubing string, and a packer connectable with the tubing string above the funnel guide for establishing a sealed zone within the casing extending from above the funnel guide to the tubing remnant packer. The funnel guide further comprises a body having a lower flared skirt adapted to receive thereinto an upper portion of the tubing remnant, a central bore extending through the body, and devices on an upper portion thereof for connection to the tubing string.
    Type: Grant
    Filed: August 15, 1986
    Date of Patent: November 10, 1987
    Assignee: Amoco Corporation
    Inventor: Robert A. Bourg
  • Patent number: 4638860
    Abstract: In the representative embodiment of the apparatus of the invention disclosed herein, a packer plug is arranged with sealing means for closing off the central bore of the mandrel of a packer that is set in a well bore for selectively isolating upper and lower formation intervals. When the plug is set in the packer mandrel, collet fingers on the body of the new and improved plug for threadedly engaging internal threads in the upper end of the packer mandrel. To secure the plug against unwanted release, a retainer member is cooperatively secured to the plug mandrel by a shear pin which will fail only at a predetermined force.
    Type: Grant
    Filed: January 31, 1986
    Date of Patent: January 27, 1987
    Assignee: Arlington Automatics Inc.
    Inventors: Robert L. Magee, Jr., Marvin B. Traweek, IV
  • Patent number: 4612985
    Abstract: A method and apparatus for inserting a seal stack in a seal bore defined by a well tool located downhole where ambient conditions would cause radial swelling of the seal stack. The seal stack is mounted at the surface in a confined space defined between a mandrel and a constraining sleeve shearably connected to the mandrel. Upon run-in of the mandrel to enter the seal bore, the constraining sleeve engages an upwardly facing surface surrounding the entrance to the seal bore which prevents further downward movement of the constraining sleeve. Application of a downward force effects the shearing of the connection between the mandrel and the constraining sleeve and permits the mandrel and seal stack to be inserted in the seal bore while the constraining sleeve moves upwardly relative to the mandrel.
    Type: Grant
    Filed: July 24, 1985
    Date of Patent: September 23, 1986
    Assignee: Baker Oil Tools, Inc.
    Inventors: Richard P. Rubbo, David M. Haugen
  • Patent number: 3997006
    Abstract: A well tool having an hydraulically releasable coupler component, a gravel packing apparatus and method for use therewith in a subterranean well having production tubing inserted therein, wherein said coupler comprises hydraulic means for releasing the tubing from the gravel pack apparatus without rotating said tubing when the coupler is activated and the tubing removed, the lower portion of the coupler remaining in the well with the gravel pack and providing a receptacle for a packing element partially inserted therethrough.
    Type: Grant
    Filed: December 20, 1974
    Date of Patent: December 14, 1976
    Assignee: Hydraulic Workovers, Inc.
    Inventor: Rodney J. Wetzel