Patents by Inventor Robert S. Sivley, IV

Robert S. Sivley, IV has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 8967272
    Abstract: A modified casing coupling houses a pressure relief valve body having a through bore with opposing end openings. The through bore communicates with the interior of the modified casing coupling at one end opening thereof and with an area surrounding the modified casing coupling at an opposite end opening. The through bore includes a ball seat adjacent one end opening thereof which receives a sealing ball. The ball is urged in the direction of the ball seat by a tensioning element. The ball is exposed to annular pressure trapped between successive lengths of well casing located in the well borehole. The amount of tension exerted on the ball by the tensioning element is selected to allow the ball to move off the ball seat to release trapped annular pressure between the selected casing strings once a certain annulus pressure is reached.
    Type: Grant
    Filed: February 20, 2014
    Date of Patent: March 3, 2015
    Assignee: Hunting Energy Services, Inc.
    Inventors: Michael E. Mock, Robert S. Sivley, IV, Mark C. Moyer
  • Publication number: 20140231092
    Abstract: A modified casing coupling houses a pressure relief valve body having a through bore with opposing end openings. The through bore communicates with the interior of the modified casing coupling at one end opening thereof and with an area surrounding the modified casing coupling at an opposite end opening. The through bore includes a ball seat adjacent one end opening thereof which receives a sealing ball. The ball is urged in the direction of the ball seat by a tensioning element. The ball is exposed to annular pressure trapped between successive lengths of well casing located in the well borehole. The amount of tension exerted on the ball by the tensioning element is selected to allow the ball to move off the ball seat to release trapped annular pressure between the selected casing strings once a certain annulus pressure is reached.
    Type: Application
    Filed: February 20, 2014
    Publication date: August 21, 2014
    Inventors: Michael E. Mock, Robert S. Sivley, IV, Mark C. Moyer
  • Patent number: 8177262
    Abstract: An expandable tubular connection includes a pin member and a box member. The pin member includes a pin thread formed on a small step and a large step and a first seal surface formed between the small step and the large step. The box member includes a box thread formed on a small step and a large step and a second seal surface formed between the small step and the large step. The pin thread and the box thread are wedge threads. Upon a selected make-up of the pin member with the box member a selected gap exists between the first seal surface and the second seal surface. The gap is selected such that, when plastically radially expanded by a selected amount, a seal is formed between at least a portion of the first seal surface and the second seal surface.
    Type: Grant
    Filed: July 28, 2005
    Date of Patent: May 15, 2012
    Assignee: Hydril Company LP
    Inventors: Robert S. Sivley, IV, Gary W. Ward, Harris A. Reynolds, Jr.
  • Patent number: 8029025
    Abstract: A tubular connection includes a pin member and box member. The pin member includes a pin thread formed on a small step and a large step and a first seal surface formed between the small step and the large step. The box member includes a box thread formed on a small step and a large step and a second seal surface formed between the small step and the large step. The pin thread and the box thread are wedge threads. The small step and the large step of both the pin member and the box member are formed on a single taper. Upon a selected make-up of the pin member with the box member, a seal is formed between at least a portion of the first seal surface and the second seal surface.
    Type: Grant
    Filed: July 28, 2005
    Date of Patent: October 4, 2011
    Assignee: Hydril Company
    Inventors: Robert S. Sivley, IV, Gary W. Ward
  • Patent number: 7686350
    Abstract: Threaded connections including a pin member and a box member and are mismatched. The pin member and the box member have wedge threads formed thereon with a gap formed between pin and box load flanks and/or pin and box stab flanks of the threaded connection. The mismatch may comprise different flank angles and/or different flank profiles between corresponding flanks.
    Type: Grant
    Filed: March 30, 2006
    Date of Patent: March 30, 2010
    Assignee: Hydril LLC
    Inventors: Harris A. Reynolds, Jr., Robert S. Sivley, IV
  • Patent number: 7607333
    Abstract: A tubular connection and methods of manufacturing a box member. The tubular connection includes a box member that includes an internal thread and a pin member that includes an external thread. The external thread is adapted to threadedly engage the internal thread. A substantially helical groove is formed on an outer surface of the box member. The method of manufacturing the box member includes selecting an outer diameter for a box member that causes the tool joint to have a greater than a selected bending strength ratio. A helical groove is formed on the outer diameter of the box member such that the helical groove reduces the bending strength ratio to be about the selected bending strength ratio. An internal thread is formed on an internal surface of the box member. Another method of manufacturing the box member includes forming an internal thread on an internal surface of a cylinder and forming a substantially helical groove on an outer surface of the cylinder.
    Type: Grant
    Filed: January 25, 2007
    Date of Patent: October 27, 2009
    Assignee: Hydril LLC
    Inventors: Robert S. Sivley, IV, Harris A. Reynolds, Jr.
  • Patent number: 7578039
    Abstract: A method for making-up a wedge thread connection comprising a pin member and a box member includes applying a pipe dope to at least one of the pin member and the box member, wherein the pin member and the box member comprise corresponding wedge threads, reducing the viscosity of the pipe dope at least temporarily, and rotating the pin member relative to the box member to make-up the wedge thread connection, wherein the rotation occurs while the viscosity of the pipe dope is at least temporarily reduced. A collar to be used with a tong assembly in making-up a threaded connection between a pin member and a box member includes at least one power unit configured to temporarily reduce the viscosity of pipe dope applied to at least one of the pin member and the box member, and an inner surface having a selected diameter to correspond to an outer diameter of at least one of the pin member and the box member.
    Type: Grant
    Filed: May 25, 2006
    Date of Patent: August 25, 2009
    Assignee: Hydril LLC
    Inventors: Harris A. Reynolds, Jr., Robert S. Sivley, IV
  • Patent number: 7527304
    Abstract: A tubular connection is provided with a first thread on a first step having an initial makeup location and a second thread on a second step, the second thread being a wedge thread and having a selected clearance on stab and load flanks at the initial makeup location of the first thread.
    Type: Grant
    Filed: December 30, 2004
    Date of Patent: May 5, 2009
    Assignee: Hydril LLC
    Inventors: David Llewellyn Mallis, Robert S. Sivley, IV, Harris A. Reynolds, Jr.
  • Patent number: 7478842
    Abstract: A threaded connection includes a first tubular, a second tubular, and a coupling. The first and second tubulars include external threads, a pin nose, a pin nose surface, a pin shoulder surface, and a pin seal surface located between the pin nose and pin shoulder surfaces. The coupling includes two internal threads corresponding to the external threads of the first and second tubulars and an inner seal support. Upon selected make-up, the pin noses overlap and contact occurs between the pin nose seal surfaces and the inner seal support is in an overlapping axial position with respect to the pin noses such that a diametrical gap exists therebetween.
    Type: Grant
    Filed: May 18, 2005
    Date of Patent: January 20, 2009
    Assignee: Hydril LLC
    Inventors: Harris A. Reynolds, Jr., Robert S. Sivley, IV
  • Patent number: 7475917
    Abstract: A threaded connection for a conduit includes a pin member and a box member. The pin member includes a pin thread having a pin thread crest, a pin thread root, a pin load flank oriented at a pin load flank angle, and a pin stab flank oriented at a pin stab flank angle. The box member includes a box thread having a box thread crest, a box thread root, a box load flank oriented at a box load flank angle, and a box stab flank oriented at a box stab flank angle. At least one of the pin load flank angle, the pin stab flank angle, the box load flank angle, and the box stab flank angle varies over at least part of the threaded connection.
    Type: Grant
    Filed: March 30, 2006
    Date of Patent: January 13, 2009
    Assignee: Hydril Company
    Inventors: Robert S. Sivley, IV, Gary W. Ward, Doug R. Enderle
  • Patent number: 7469938
    Abstract: A threaded connection includes a male member having threads thereon defining a load flank lead and a stab flank lead. The threaded connection also includes a female member having threads thereon adapted to mate with threads on the male member, wherein the threads on the female end define a load flank lead and a stab flank lead, wherein at least one of the load flank lead and the stab flank lead on at least one of the female member and the male member change at a predetermined rate beginning at a selected distance from either one or both ends of the threads, wherein the stab flank lead and the load flank lead are different from each other over at least part of the thread length.
    Type: Grant
    Filed: August 11, 2005
    Date of Patent: December 30, 2008
    Assignee: Hydril Company
    Inventor: Robert S. Sivley, IV
  • Patent number: 7383888
    Abstract: A tool for radially expanding casing having a tool body that includes a proximal end, a distal end, and an outer surface. The tool includes at least one hydraulic channel disposed axially. The at least one hydraulic channel transmits hydraulic pressure from behind the expansion tool forward in the direction of travel of the expansion tool.
    Type: Grant
    Filed: March 19, 2007
    Date of Patent: June 10, 2008
    Assignee: Hydril Company
    Inventor: Robert S. Sivley, IV
  • Patent number: 7380840
    Abstract: Tubular connections and methods of designing tubular connections having selected root/crest clearance when the box member and pin member are made-up. When the tubular connection is radially expanded, a thread seal is formed over at least part of the tubular connection.
    Type: Grant
    Filed: October 26, 2004
    Date of Patent: June 3, 2008
    Assignee: Hydril Company
    Inventors: Robert S. Sivley, IV, Harris A. Reynolds, Jr.
  • Patent number: 7191841
    Abstract: A tool for radially expanding casing having a tool body that includes a proximal end, a distal end, and an outer surface. The tool includes at least one hydraulic channel disposed axially. The at least one hydraulic channel transmits hydraulic pressure from behind the expansion tool forward in the direction of travel of the expansion tool.
    Type: Grant
    Filed: October 5, 2004
    Date of Patent: March 20, 2007
    Assignee: Hydril Company L.P.
    Inventor: Robert S. Sivley, IV
  • Patent number: 6976711
    Abstract: A threaded connection for a conduit is disclosed. The connection includes a male member having threads on it defining a load flank lead, a stab flank lead and a nominal lead. A female member has threads thereon adapted to mate with the threads on the male member. The threads on the female member define a load flank lead, a stab flank lead and a nominal lead. At least one of the load flank lead and the stab flank lead, on at least one of the female member and the male member, is changed at a predetermined rate beginning at a selected distance from an end of the threads. The load lead and the stab lead are different from each other over at least part of the thread length.
    Type: Grant
    Filed: April 19, 2002
    Date of Patent: December 20, 2005
    Assignee: Hydril Company LP
    Inventor: Robert S. Sivley, IV
  • Patent number: 6622797
    Abstract: A tool for radially plastically expanding a pipe having a threaded connection therein, that includes a first section. The first section has an increasing diameter and increasing cone angle along a direction of travel through the pipe. The first section includes a first outer surface adapted to contact an inner surface of the pipe at a plurality of selected contact patches on the first outer surface. The tool also includes a second section axially disposed behind the first section along the direction of travel. The second section has an increasing diameter and decreasing cone angle along the direction of travel. The second section includes a second outer surface adapted to contact an inner surface of the pipe at at least one selected contact patch on the second outer surface.
    Type: Grant
    Filed: October 24, 2001
    Date of Patent: September 23, 2003
    Assignee: Hydril Company
    Inventor: Robert S. Sivley, IV
  • Patent number: 6607220
    Abstract: A radially expandable tubular connection including a box member having an internal thread and a first seal surface and a pin member having an external thread and a second seal surface. The external thread threadedly engages the internal thread and the first and second seal surfaces form a metal-to-metal seal upon engagement of the seal surfaces. At least one groove is formed on an outer surface of the box member, and the at least one groove is shaped so that the box member radially deforms in a direction toward the pin member in a region near the metal-to-metal seal after radial plastic expansion of the pin and box members after engagement of the threads.
    Type: Grant
    Filed: October 9, 2001
    Date of Patent: August 19, 2003
    Assignee: Hydril Company
    Inventor: Robert S. Sivley, IV
  • Patent number: 6554287
    Abstract: A seal for a radially expansible conduit connection is disclosed. The seal includes a first sealing surface disposed proximal to an end of a male portion of the connection and a corresponding second sealing surface disposed proximal to an end of a female portion of the connection. The first and said second sealing surfaces are substantially opposite each other upon connection of the male and female portions. The seal includes a first clearance surface proximal to the first sealing surface and a second clearance surface proximal to the second sealing surface. The first and second clearance surfaces are substantially opposite each other upon connection of the male and female portions.
    Type: Grant
    Filed: December 9, 1999
    Date of Patent: April 29, 2003
    Assignee: Hydril Company
    Inventors: Robert S. Sivley, IV, John F. Greenip
  • Patent number: 6530607
    Abstract: A threaded connector includes a pin member having a large thread step and a small thread step. The pin member has a first sealing surface between the steps. Threads on the steps of the pin member each have load flanks and stab flanks. The connector includes a box member having a large thread step and a small thread step corresponding to the thread steps on the pin member. The box member has a second sealing surface corresponding to the first sealing surface. Threads on the steps of the box member have load flanks and stab flanks corresponding to the threads on the pin member. The threads on the large thread step have a first clearance between corresponding stab flanks on the pin and box members when the pin and box members are assembled and the corresponding load flanks are engaged. The threads on the small step have a second clearance between corresponding stab flanks when the pin and box members are assembled. The first clearance in one embodiment is smaller than the second clearance.
    Type: Grant
    Filed: November 6, 2000
    Date of Patent: March 11, 2003
    Assignee: Hydril Company
    Inventors: David L. Mallis, Robert S. Sivley, IV