1
Allan S Richardson: Drilling rig. Zarley McKee Thomte Voorhees & Sease, October 12, 1993: US05251709 (118 worldwide citation)

The present invention discloses structures which enable the construction or conversion of drilling rigs in which the rotary table and kelly are replaced by a top drive rotating mechanism. Furthermore, torque guide is provided to control lateral movement of the top drive and resist reactionary rotati ...


2
Lemuel T York, Allan S Richardson, Beat Kuttel: Top drive well casing system and method. Canrig Drilling Technology, Baker Botts L, January 20, 2004: US06679333 (116 worldwide citation)

A well casing system is disclosed for the handling and make-up of casing on a drilling rig in conjunction with a top drive is disclosed. The system comprises a top drive, a casing make-up assembly, links, link tilts, and transfer and lifting elevators. The operator can remotely manipulate the elevat ...


3
Allan S Richardson, Monte N Wright: Backup tool and method for preventing rotation of a drill string. July 28, 1998: US05785132 (80 worldwide citation)

A backup tool for engaging a drill pipe body having elongated jaws such that the pressure exerted by the jaws on the drill pipe body is sufficiently distributed to not damage the drill pipe body.


4
Allan S Richardson, Robert Hope: Portable top drive. Nabors, Baker & Botts L, February 15, 2000: US06024181 (52 worldwide citation)

A portable top drive drilling unit that is a self-contained assembly of components adapted for quick installation in a drilling rig and which requires a minimum of modification to the rig structure.


5
Allan S Richardson: Power tong wrench. Canrig Drilling Technology, Baker Botts L, July 4, 2000: US06082225 (37 worldwide citation)

A power tong wrench having an open slot to accommodate a range of pipe diameters capable of making and breaking pipe threads and spinning in or out the threads and in which hydraulic power is supplied with a pump disposed within a rotary assembly, which pump is powered through a non-mechanical coupl ...


6
Allan S Richardson, Robert L Hope: Portable top drive. Nabors, Fish & Richardson PC, May 26, 1998: US05755296 (33 worldwide citation)

A portable top drive drilling unit that is a self-contained assembly of components adapted for quick installation in a drilling rig and which requires a minimum of modification to the rig structure.


7
Lemuel T York, Allan S Richardson, Beat Kuttel: Top drive well casing system. Canrig Drilling Technology, Baker Botts L, July 26, 2005: US06920926 (17 worldwide citation)

A well casing system is disclosed for the handling and make-up of casing on a drilling rig in conjunction with a top drive is disclosed. The system comprises a top drive, a casing make-up assembly, links, link tilts, and transfer and lifting elevators. The operator can remotely manipulate the elevat ...


8
Lemuel T York, Allan S Richardson, Beat Kuttel: Valve actuator. Baker Botts L, January 11, 2005: US06840493 (10 worldwide citation)

A valve actuator is provided in which a complementary set of pinions, each driven by a pair of racks, are located on opposite sides of the valve to be actuated. The racks are part of an annular bearing assembly and are coupled to one another through a hydraulic cylinder or some other displacement de ...


9
Allan S Richardson: Quill saver sub. Canrig Drilling Technology, Haynes and Boone, June 9, 2009: US07543650 (6 worldwide citation)

A saver sub assembly has a body capable of coupling with a quill, and a split ring capable of coupling with the quill and the body and capable of keeping the quill and body together. The body has splines to prevent relative rotation between the quill and the body. The body may be hollow, and/or have ...


10
Allan S Richardson, Beat K├╝ttle: Drilling method and apparatus. Canrig Drilling Technology, Enrique Abarca, Abel Law Group, June 24, 2014: USRE044956

A method and apparatus for precisely controlling the rotation of a drill string. A sensor monitors the rotation of the drill string and transmits the rotational information to a computer. The computer controls the rotation of the motor driving the drill string and rotates the drill string through an ...