Patents by Inventor Bob McGuire

Bob McGuire 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).

  • Hybrid wellhead system and method of use
    Patent number: 8118090
    Abstract: A hybrid wellhead system for a hydrocarbon well, having a wellhead supported by a conductor; an intermediate head spool secured to the wellhead by a hammer union; and a tubing head spool secured to the intermediate head spool by a hammer union.
    Type: Grant
    Filed: March 11, 2011
    Date of Patent: February 21, 2012
    Assignee: Stinger Wellhead Protection, Inc.
    Inventors: L. Murray Dallas, Bob McGuire
  • Multipart frac head with replaceable components
    Patent number: 8113275
    Abstract: A multipart frac head with removable components permits the frac head to be refurbished in the field. A bottom leg and inlet ports of the multipart frac head can be replaced.
    Type: Grant
    Filed: November 8, 2010
    Date of Patent: February 14, 2012
    Assignee: Stinger Wellhead Protection, Inc.
    Inventors: Bob McGuire, Danny Lee Artherholt
  • Fracturing head with replaceable inserts for improved wear resistance and method of refurbishing same
    Patent number: 8100175
    Abstract: Fracturing heads with one or more replaceable wear-resistant inserts have annular sealing elements for inhibiting fracturing fluids from circulating between the inserts and a main body of the fracturing head. Worn inserts and degraded sealing elements are easily replaced to refurbish the fracturing head without replacing or rebuilding the main body. Service life of the main body is therefore significantly prolonged. In one embodiment, an entire flow path through the main body is lined with wear-resistant replaceable inserts to further prolong the service life of the main body.
    Type: Grant
    Filed: March 25, 2011
    Date of Patent: January 24, 2012
    Assignee: Stinger Wellhead Protection, Inc.
    Inventors: Bob McGuire, L. Murray Dallas
  • Multi-lock adapters for independent screwed wellheads and methods of using same
    Patent number: 8100185
    Abstract: A multi-lock adapter used to inject high-pressure well stimulation fluids through an independent screwed wellhead includes an adapter pin having a central passageway with an internal diameter at least as large as a passageway through the wellhead. A lockdown flange secures the adapter pin to a casing mandrel of the wellhead. The lockdown flange ensures that stress on connection points to the screwed independent wellhead due to elevated fluid pressures used for well stimulation procedures does not exceed engineered specifications.
    Type: Grant
    Filed: June 28, 2011
    Date of Patent: January 24, 2012
    Assignee: Stinger Wellhead Protection, Inc.
    Inventors: Bob McGuire, L. Murray Dallas
  • EROSION RESISTANT FRAC HEAD
    Publication number: 20110315370
    Abstract: An erosion resistant frac head with a convergence chamber, an expansion chamber and a mixing chamber provides improved resistance to erosion caused by abrasive frac fluids pumped through the frac head. A bottom leg of the erosion resistant frac head terminates in a flange and may be replaced in the field by field hands.
    Type: Application
    Filed: September 8, 2011
    Publication date: December 29, 2011
    Applicant: STINGER WELLHEAD PROTECTION, INC.
    Inventor: Bob McGuire
  • THREADED UNION FOR TUBULARS USED IN HIGH-PRESSURE FLUID APPLICATIONS
    Publication number: 20110266795
    Abstract: A threaded union for tubulars used for high-pressure fluid applications includes a unitary nut supported by at least two nut retainer segments received under a top wall of the nut in an annular segment retainer groove in one of the tubulars. The nut retainer segments fully support the unitary nut. The nut retainer segments are held in the annular segment retainer groove by limiting travel of the nut or by securing the nut retainer segments in the segment retainer groove.
    Type: Application
    Filed: July 13, 2011
    Publication date: November 3, 2011
    Applicant: Stinger Wellhead Protection, Inc.
    Inventor: Bob McGuire
  • MULTI-LOCK ADAPTERS FOR INDEPENDENT SCREWED WELLHEADS AND METHODS OF USING SAME
    Publication number: 20110253384
    Abstract: A multi-lock adapter used to inject high-pressure well stimulation fluids through an independent screwed wellhead includes an adapter pin having a central passageway with an internal diameter at least as large as a passageway through the wellhead. A lockdown flange secures the adapter pin to a casing mandrel of the wellhead. The lockdown flange ensures that stress on connection points to the screwed independent wellhead due to elevated fluid pressures used for well stimulation procedures does not exceed engineered specifications.
    Type: Application
    Filed: June 28, 2011
    Publication date: October 20, 2011
    Applicant: STINGER WELLHEAD PROTECTION, INC.
    Inventors: Bob McGuire, L. Murray Dallas
  • Erosion resistant frac head
    Patent number: 8016031
    Abstract: An erosion resistant frac head with a convergence chamber, an expansion chamber and a mixing chamber provides improved resistance to erosion caused by abrasive frac fluids pumped through the frac head. A bottom leg of the erosion resistant frac head may be replaced in the field by field hands.
    Type: Grant
    Filed: September 2, 2010
    Date of Patent: September 13, 2011
    Assignee: Stinger Wellhead Protection, Inc.
    Inventor: Bob McGuire
  • HYBRID WELLHEAD SYSTEM AND METHOD OF USE
    Publication number: 20110198074
    Abstract: A hybrid wellhead system for a hydrocarbon well, having a wellhead supported by a conductor; an intermediate head spool secured to the wellhead by a hammer union; and a tubing head spool secured to the intermediate head spool by a hammer union.
    Type: Application
    Filed: March 11, 2011
    Publication date: August 18, 2011
    Applicant: STINGER WELLHEAD PROTECTION, INC.
    Inventors: Bob McGuire, L. Murray Dallas
  • CASING MANDREL FOR FACILITATING WELL COMPLETION, RE-COMPLETION OR WORKOVER
    Publication number: 20110180252
    Abstract: A casing mandrel for an independent screwed wellhead includes a seal bore for receiving a fixed-point packoff connected to a high-pressure mandrel of a pressure isolation tool, and a pin thread adapted for engagement with a box thread of a tubing head supported by the casing mandrel.
    Type: Application
    Filed: April 5, 2011
    Publication date: July 28, 2011
    Applicant: STINGER WELLHEAD PROTECTION, INC.
    Inventor: Bob McGuire
  • Threaded union for tubulars used in high-pressure fluid applications
    Patent number: 7984932
    Abstract: A threaded union for tubulars used for high-pressure fluid applications includes a unitary nut supported by at least two nut retainer segments received under a top wall of the nut in an annular segment retainer groove in one of the tubulars. The nut retainer segments fully support the unitary nut. The nut retainer segments are held in the annular segment retainer groove by limiting travel of the nut or by securing the nut retainer segments in the segment retainer groove.
    Type: Grant
    Filed: December 19, 2007
    Date of Patent: July 26, 2011
    Assignee: Stinger Wellhead Protection, Inc.
    Inventor: Bob McGuire
  • Multi-lock adapters for independent screwed wellheads and methods of using same
    Patent number: 7984758
    Abstract: A multi-lock adapter used to inject high-pressure well stimulation fluids through an independent screwed wellhead includes an adapter pin having a central passageway with an internal diameter at least as large as a passageway through the wellhead. A lockdown flange secures the adapter pin to a casing mandrel of the wellhead. The lockdown flange ensures that stress on connection points to the screwed independent wellhead due to elevated fluid pressures used for well stimulation procedures does not exceed engineered specifications.
    Type: Grant
    Filed: March 31, 2010
    Date of Patent: July 26, 2011
    Assignee: Stinger Wellhead Protection, Inc.
    Inventors: Bob McGuire, L. Murray Dallas
  • HIGH-PRESSURE THREADED UNION WITH METAL-TO-METAL SEAL, AND METAL RING GASKET FOR SAME
    Publication number: 20110175349
    Abstract: A metal ring gasket provides a high-pressure temperature tolerant metal-to-metal seal between subcomponents of a threaded union. The metal ring gasket is received in an annular cavity formed between mating surfaces of the subcomponents of the threaded union. The metal ring gasket is capable of maintaining a fluid seal even at very high temperatures resulting from direct exposure to fire. At high fluid pressures the metal ring gasket is energized because hoop stress induced by the fluid pressure forces the metal ring gasket into tighter contact with the subcomponents of the threaded union.
    Type: Application
    Filed: April 4, 2011
    Publication date: July 21, 2011
    Applicant: STINGER WELLHEAD PROTECTION, INC.
    Inventors: L. Murray Dallas, Bob McGuire, Danny Lee Artherholt
  • HIGH-PRESSURE PLUG VALVE
    Publication number: 20110175008
    Abstract: A plug valve has a valve body, a cage fitted within the valve body and a rotatable plug housed within a cylindrical cavity in the cage, for controlling fluid flow through the valve. The cage has first and second opposed flat side surfaces, each side surface has a port for receiving a replaceable flow-path insert in a fluid-tight seal. In one embodiment, the plug also includes at least one inset seal for sealing the at least one of the ports when the plug is in a closed position to inhibit leakage through the valve at low fluid pressures.
    Type: Application
    Filed: March 28, 2011
    Publication date: July 21, 2011
    Applicant: STINGER WELLHEAD PROTECTION, INC.
    Inventors: Bob McGuire, L. Murray Dallas
  • FRACTURING HEAD WITH REPLACEABLE INSERTS FOR IMPROVED WEAR RESISTANCE AND METHOD OF REFURBISHING SAME
    Publication number: 20110168384
    Abstract: Fracturing heads with one or more replaceable wear-resistant inserts have annular sealing elements for inhibiting fracturing fluids from circulating between the inserts and a main body of the fracturing head. Worn inserts and degraded sealing elements are easily replaced to refurbish the fracturing head without replacing or rebuilding the main body. Service life of the main body is therefore significantly prolonged. In one embodiment, an entire flow path through the main body is lined with wear-resistant replaceable inserts to further prolong the service life of the main body.
    Type: Application
    Filed: March 25, 2011
    Publication date: July 14, 2011
    Applicant: STINGER WELLHEAD PROTECTION, INC.
    Inventors: Bob McGuire, L. Murray Dallas
  • Slip spool assembly and method of using same
    Patent number: 7967086
    Abstract: A slip spool includes radially disposed actuators for radially moving slip blocks between a loose encirclement position in which they surround the tubing string and a cached position in which the slip blocks clear an axial passage of the slip spool. The slip spool further includes axially disposed actuators for axially displacing the slip blocks between the loose encirclement position and an engagement position in which the slip blocks are seated within a slip bowl of the slip spool so that a weight of the suspended tubing string causes the slip blocks to tightly grip the tubing string. The slip spool facilitates positioning and repositioning of the tubing string in the wellbore and can be used for supporting or snubbing a tubing string in a live well bore.
    Type: Grant
    Filed: June 24, 2010
    Date of Patent: June 28, 2011
    Assignee: Stinger Wellhead Protection, Inc.
    Inventors: Bob McGuire, L. Murray Dallas, Irwin Rosenhauch
  • Gate valve with replaceable inserts and method of refurbishing same
    Patent number: 7950410
    Abstract: A gate valve includes a valve body having a cylindrical passage defining a flow path through the valve, a gate for controlling fluid flow through the valve and a replaceable wear-resistant flow-path liner for in the flow path. The flow-path liner includes a plurality of replaceable wear-resistant inserts, including wear sleeves lining ports of the valve body, valve seats and a gate insert for a flow path bore through the gate. Each replaceable valve seat has a wiper ring for cleaning the gate when it opens and closes. By regularly inspecting and replacing worn-out inserts, the service life of the gate valve can be prolonged and the expense associated with replacing or rebuilding the valve body is avoided.
    Type: Grant
    Filed: December 18, 2008
    Date of Patent: May 31, 2011
    Assignee: Stinger Wellhead Protection, Inc.
    Inventors: Bob McGuire, L. Murray Dallas
  • High-pressure plug valve
    Patent number: 7946558
    Abstract: A plug valve has a valve body, a cage fitted within the valve body and a rotatable plug housed within a cylindrical cavity in the cage, for controlling fluid flow through the valve. The cage has first and second opposed flat side surfaces, each side surface has a port for receiving a replaceable flow-path insert in a fluid-tight seal. In one embodiment, the plug also includes at least one inset seal for sealing the at least one of the ports when the plug is in a closed position to inhibit leakage through the valve at low fluid pressures.
    Type: Grant
    Filed: April 6, 2010
    Date of Patent: May 24, 2011
    Assignee: Stinger Wellhead Protection, Inc.
    Inventors: Bob McGuire, L. Murray Dallas
  • Fracturing head with replaceable inserts for improved wear resistance and method of refurbishing same
    Patent number: 7934546
    Abstract: Fracturing heads with one or more replaceable wear-resistant inserts have annular sealing elements for inhibiting fracturing fluids from circulating between the inserts and a main body of the fracturing head. Worn inserts and degraded sealing elements are easily replaced to refurbish the fracturing head without replacing or rebuilding the main body. Service life of the main body is therefore significantly prolonged. In one embodiment, an entire flow path through the main body is lined with wear-resistant replaceable inserts to further prolong the service life of the main body.
    Type: Grant
    Filed: November 4, 2009
    Date of Patent: May 3, 2011
    Assignee: Stinger Wellhead Protection, Inc.
    Inventors: Bob McGuire, L. Murray Dallas
  • High-pressure threaded union with metal-to-metal seal, and metal ring gasket for same
    Patent number: 7922216
    Abstract: A metal ring gasket provides a high-pressure temperature tolerant metal-to-metal seal between subcomponents of a threaded union. The metal ring gasket is received in an annular cavity formed between mating surfaces of the subcomponents of the threaded union. The metal ring gasket is capable of maintaining a fluid seal even at very high temperatures resulting from direct exposure to fire. At high fluid pressures the metal ring gasket is energized because hoop stress induced by the fluid pressure forces the metal ring gasket into tighter contact with the subcomponents of the threaded union.
    Type: Grant
    Filed: January 6, 2010
    Date of Patent: April 12, 2011
    Assignee: Stinger Wellhead Protection, Inc.
    Inventors: L. Murray Dallas, Bob McGuire, Danny Lee Artherholt