1
Bernd Georg Pietras, Thomas F Bailey, Adrian Vuyk Jr, Carl J Wilson: Casing running and drilling system. Weatherford Lamb, Patterson & Sheridan, March 20, 2007: US07191840 (67 worldwide citation)

A method and apparatus for holding and turning a tubular and string of tubulars, such as casing, for make-up and drilling with the tubulars are disclosed. The apparatus generally includes a spear and a clamping head, both of which are mounted to a top drive. The spear and the clamping head can be en ...


2
Bernd Georg Pietras, Thomas F Bailey, Adrian Vuyk Jr, Carl J Wilson: Casing running and drilling system. Weatherford Lamb, Patterson & Sheridan, April 7, 2009: US07513300 (40 worldwide citation)

A method and apparatus for holding and turning a tubular and string of tubulars, such as casing, for make-up and drilling with the tubulars are disclosed. The apparatus generally includes a spear and a clamping head, both of which are mounted to a top drive. The spear and the clamping head can be en ...


3
Jerry W Fisher, Thomas M Redlinger, Carl J Wilson, Mary L Laird: Releasing and recovering tool. Weatherford Lamb, Patterson & Sheridan L, January 8, 2013: US08347964 (10 worldwide citation)

Apparatus and methods for selectively releasing a first wellbore component to a second wellbore component using a disconnect device. The method includes coupling a disconnect device to a workstring and a downhole tool; performing a downhole operation using the downhole tool, and selectively releasin ...


4
Jerry W Fisher, Thomas M Redlinger, Carl J Wilson, Mary L Laird: Releasing and recovering tool. Weatherford Lamb, Patterson & Sheridan L, March 27, 2012: US08141634 (10 worldwide citation)

Apparatus and methods for selectively releasing a first wellbore component to a second wellbore component using a disconnect device. The method includes coupling a disconnect device to a workstring and a downhole tool; performing a downhole operation using the downhole tool, and selectively releasin ...


5
Bernd Georg Pietras, Thomas F Bailey, Adrian Vuyk, Carl J Wilson: Casing running and drilling system. William B Patterson, Moser Patterson & Sheridan, November 4, 2004: US20040216924-A1

A method and apparatus for holding and turning a tubular and string of tubulars, such as casing, for make-up and drilling with the tubulars are disclosed. The apparatus generally includes a spear and a clamping head, both of which are mounted to a top drive. The spear and the clamping head can be en ...


6
Bernd Georg Pietras, Thomas F Bailey, Adrian Vuyk, Carl J Wilson: Casing running and drilling system. Patterson & Sheridan, August 23, 2007: US20070193751-A1

A method and apparatus for holding and turning a tubular and string of tubulars, such as casing, for make-up and drilling with the tubulars are disclosed. The apparatus generally includes a spear and a clamping head, both of which are mounted to a top drive. The spear and the clamping head can be en ...


7
Jerry W Fisher, Thomas M Redlinger, Carl J Wilson, Mary L Laird: Releasing and recovering tool. Patterson & Sheridan, February 21, 2008: US20080041597-A1

Apparatus and methods for selectively releasing a first wellbore component to a second wellbore component using a disconnect device. In one embodiment, the method includes coupling a disconnect device to a workstring and a downhole tool; performing a downhole operation using the downhole tool, and s ...


8
Jerry W Fisher, Thomas M Redlinger, Carl J Wilson, Mary L Laird: Releasing and recovering tool. June 14, 2012: US20120145396-A1

Apparatus and methods for selectively releasing a first wellbore component to a second wellbore component using a disconnect device. The method includes coupling a disconnect device to a workstring and a downhole tool; performing a downhole operation using the downhole tool, and selectively releasin ...