Installation and removal of top drive units

Boring or penetrating the earth – Processes

Patent

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Details

175 87, 175203, E21B 1900

Patent

active

059213299

ABSTRACT:
The invention features an assembly for use with a drilling rig having a mast and a first torque guide section mounted to the mast. The first torque guide section has an end and a coupler mounted near the end. The assembly includes a second torque guide section and a fastener mounted to the second torque guide section. The fastener is configured to form a releasable pivotal connection with the coupler.

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patent: 5381867 (1995-01-01), Berry
patent: 5433279 (1995-07-01), Tessari et al.
patent: 5501286 (1996-03-01), Berry
"Reinventing the Rig", CPA Review, Oct. 1991.
"Portable Hydraulic Top Drive", TESCO Drilling Technology, Jan. 1992.
"Drilling Technology for the Nineties", Canrig Drilling Technology, Ltd.
"Land Rigs Benefit from Portable Top Drive System", Oil & Gas Journal, No. 11, Tulsa, Oklahoma, Mar. 14, 1994.
"Canrig Top Drive Drilling Systems", Canadian Rig Ltd., Calgary, Alberta, Canada.
B. Jackson, "Portable Top Drive Cuts Horizontal Drilling Costs", World Oil, No. 11, Houston, Texas, Nov. 1993.
World Oil Composite Catalog '92/'93 (vol. 2), Gulf Publishing Company, Houston, Texas, p. 3464.
World Oil Composite Catalog '92/'93 (vol. 2), Gulf Publishing Company, Houston, Texas, pp. 540-541.

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