1
John Timothy Allen, Steven Anthony Box, Bernd Pietras, Jeffrey Michael Habetz: Wellbore circulation system. Weatherford Lamb, Moser Patterson & Sheridan L, July 2, 2002: US06412554 (118 worldwide citation)

A system for continuously circulating fluid to and through a tubular string either of coiled tubing or made up of a plurality of tubulars connected end-to-end while an upper tubular is added to or removed from a top tubular of the plurality of tubulars, all tubulars having a top-to-bottom fluid flow ...


2
John Timothy Allen, Steven Anthony Box, Bernd Pietras, Jeffrey Michael Habetz: Tong for wellbore operations. Weatherford Lamb, Moser Patterson & Sheridan L, December 30, 2003: US06668684 (86 worldwide citation)

A tong as may be used for a continuous circulation system in a wellbore. The tong has a housing with a hollow interior. A plurality of spaced apart jaw assemblies reside within the housing's hollow interior for engaging a portion of a tubular to be gripped and rotated by the tong. A gear wheel ...


3
Richard L Giroux, David Shahin, Adrian Vuyk Jr, Gary Thompson, Kevin Leon Gray, John Timothy Allen, Randy Gene Snider: Methods and apparatus for handling and drilling with tubulars or casing. Weatherford Lamb, Patterson & Sheridan, February 5, 2008: US07325610 (73 worldwide citation)

The present invention provides a method and apparatus for handling tubulars and drilling with tubulars such as casing into a formation. In one aspect of the invention, the apparatus comprises a circulating head and a cementing head operatively connectible to a gripping member. The circulating head i ...


4
Richard L Giroux, David Shahin, Adrian Vuyk Jr, Gary Thompson, Kevin Leon Gray, John Timothy Allen, Randy Gene Snider: Methods and apparatus for handling and drilling with tubulars or casing. Weatherford Lamb, Patterson & Sheridan, February 2, 2010: US07654325 (36 worldwide citation)

The present invention provides a method and apparatus for handling tubulars and drilling with tubulars such as casing into a formation. In one aspect of the invention, the apparatus comprises a circulating head and a cementing head operatively connectible to a gripping member. The circulating head i ...


5
Randy Gene Snider, David Othman Shahin, John Timothy Allen, Kevin Leon Gray, Gary Thompson: Top drive casing system. Weatherford Lamb, Patterson & Sheridan, September 14, 2010: US07793719 (31 worldwide citation)

A torque head for gripping tubular members, in at least some aspects, has a housing, grip mechanism secured within the housing, the grip mechanism for selectively gripping a tubular member, the grip mechanism including at least one jaw selectively movable toward and away from a portion of a tubular ...


6
John Timothy Allen, Steven Anthony Box: Tong. Weatherford Lamb, Moser Patterson & Sheridan, December 18, 2001: US06330911 (25 worldwide citation)

A tong for rotating tubulars, the tong having, in certain embodiments, a tong outer case, a rotary movably mounted in the case for rotating a tubular, apparatus for rotating the rotary to rotate the tubular, at least one gripper or jaw movably mounted in the case and movable by the rotary for grippi ...


7
Randy Gene Snider, David Othman Shahin, John Timothy Allen, Kevin Leon Gray, Gary Thompson: Top drive casing system. Weatherford Lamb, Patterson & Sheridan, April 5, 2011: US07918273 (8 worldwide citation)

A torque head for gripping tubular members, in at least some aspects, has a housing, grip mechanism secured within the housing, the grip mechanism for selectively gripping a tubular member, the grip mechanism including at least one jaw selectively movable toward and away from a portion of a tubular ...


8
John Timothy Allen, Steven Anthony Box, Bernd Pietras, Jeffrey Michael Habetz: Tong for wellbore operations. Weatherford Lamb, Patterson & Sheridan, April 18, 2006: US07028787 (6 worldwide citation)

A tong as may be used for a continuous circulation system in a wellbore. The tong has a housing with a hollow interior. A plurality of spaced apart jaw assemblies reside within the housing's hollow interior for engaging a portion of a tubular to be gripped and rotated by the tong. A gear wheel is se ...


9
John Timothy Allen, Steven Anthony Box, Bernd Pietras, Jeffrey Michael Habetz: Tong for wellbore operations. Weatherford Lamb, William B Patterson, Moser Patterson & Sheridan, September 26, 2002: US20020134555-A1 (5 worldwide citation)

A tong as may be used for a continuous circulation system in a wellbore. The tong has a housing with a hollow interior. A plurality of spaced apart jaw assemblies reside within the housing's hollow interior for engaging a portion of a tubular to be gripped and rotated by the tong. A gear wheel is se ...


10
Randy Gene Snider, David Othman Shahin, John Timothy Allen, Kevin Leon Gray, Gary Thompson: Top drive casing system. Weatherford Lamb, Patterson & Sheridan, July 31, 2012: US08230933 (1 worldwide citation)

A torque head for gripping tubular members, in at least some aspects, has a housing, grip mechanism secured within the housing, the grip mechanism for selectively gripping a tubular member, the grip mechanism including at least one jaw selectively movable toward and away from a portion of a tubular ...