Mast and trolley arrangement for mobile multi-function rig

a multi-functional rig and mast technology, applied in the field of improved, can solve the problem that the system cannot readily accommodate a top drive mechanism
US20030098150A1Inactive Publication Date: 2003-05-29TECHNIL CORP
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Patent Information

Authority / Receiving Office
US · United States
Current Assignee / Owner
TECHNIL CORP
Publication Date
2003-05-29
Estimated Expiration
Not applicable · inactive patent

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Abstract

An improved mast arrangement for a mobile multi-function rig has a winch line extending from an upper end of the mast and a traveling block supported thereon. A trolley mountable on the mast is adapted for coupling to the traveling block. The trolley works primarily as a guide for a given load, and therefore is of a lightweight design since loads mounted to the trolley are transferred directly to the traveling block and the supporting winch line. The trolley provides the capability to readily switch between various rig operations, including manipulating coiled tubing with an injector, setting surface casing using a top drive, operating the winch and traveling block for joined pipe operations, and interchanging between top drive and joined pipe operations without removing the top drive from the mast or rig. The rig can run deeper joined pipe applications than previous mobile rigs by providing means for employing the top drive, namely the trolley is adapted to counteract the torsion exerted by the top drive during operation. The trolley is able to work the entire length of the mast after quickly parking the injector near the bottom of the mast. The winch and traveling block have unobstructed travel along the entire length of the mast without disengaging the trolley from the mast and with the injector parked near the bottom end.
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Description

[0001] The present invention relates to drilling and servicing equipment for oil and gas wells generally, and in particular relates to an improved mast and trolley design for use in rigs which transport and / or operate equipment for continuous coiled tubing drilling, for conventional joined pipe handling and drilling, and / or for wireline applications.

[0002] Our co-pending U.S. patent application Ser. No. 09 / 688,979 and corresponding Canadian patent application 2,322,917 for a "Trolley and Traveling Block System" disclose a novel trolley hoisting system for use in rigs, particularly multi-task rigs, which transport and / or operate equipment for oil and gas operations, including continuous coiled tubing drilling and conventional joined pipe handling and drilling operations. The novel system allows a single winch arrangement to perform various tasks without having to detach from or connect to the injector, as in some conventional rig arrangements, when switching between tasks. In particu...

Claims

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