National Oilwell, Inc.

National Oilwell Varco, L.p.

James Cirone

Calvin Ronald Blankenship

Michael R Zemanek

Jay D Furnish

Jeff A Lambert

James Cavitt Garrett

Kenneth L Cambern

Joel M Ferland

Donald W Johnson

Mihail Puscas

Henry Do

Christopher Brian Walker

Robert Ioan Papp

Delfino Moreno, Iii

Blaine A Allen

Iii Moreno Delfino

A system for drilling a subterranean borehole. In an embodiment, the system includes a mast, and a pipe rotator coupled to the mast. The pipe rotator includes a stem that is configured to be coupled to an end of a drillstring and a motor that is configured to rotate the stem. In addition, the system includes a guide beam coupled to the mast. The guide beam includes a longitudinal axis and is configured to guide vertical motion of the pipe rotator. The guide beam includes a plurality of elongate sections configured to be generally aligned along the longitudinal axis. In addition, the guide beam includes a plurality of coupling assemblies configured to interconnect the plurality of elongate sections and align the plurality elongate sections along the longitudinal axis.

Guidance systems and apparatus for power swivel

The present disclosure, in one or more embodiments, relates to a well servicing rig having a mast having a racking board, a base supporting the mast, and a stabilization system configured to secure the rig against wind loading. The stabilization system may include a pair of front outriggers, a pair of rear outriggers, a pair of racking board supports coupled to the rear outriggers, and a pair of internal guylines extending between the racking board and the racking board supports.

Guyless rig with outriggers

A method and apparatus for positioning and supporting the work platform of a mobile workover rig is disclosed. The work platform of the preferred embodiment of the present invention utilizes a unique support structure and automated positioning system for positioning the work platform at the desired height above the wellhead equipment. The preferred embodiment of the present invention utilizes a specialized automated 'pinning' system that secures the work platform at the desired height. Additionally, the present invention utilizes one or more support cylinders to position and support the work platform in the horizontal position over the wellhead equipment. The automated positioning and pinning system of the present invention is a unique system that significantly reduces the time required to position the work platform of a mobile workover rig in the operating position, as well as significantly reduces the risk of injury to rig personnel assisting in the positioning operations.

Automated system for positioning and supporting the work platform of a mobile workover and well-servicing rig

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Pampa, TX, United States of America

James Cirone