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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

Inactive Publication Date: 2003-05-29
TECHNIL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

0004] According to the present invention, there is provided in one aspect an improved mast arrangement for mobile multi-function rig comprising a winch line extending from an upper end of the mast having, a traveling block supported by the winch line, and a trolley mountable on the mast having side members for operatively engaging the mast, rail portions extending perpendicu

Problems solved by technology

However, the above system can not readily accommodate a top drive mechanism to rotate joined pipe or to set surface casing.

Method used

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  • Mast and trolley arrangement for mobile multi-function rig

Examples

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Embodiment Construction

[0059] FIG. 1a shows a mobile rig (generally indicated by reference numeral 10) for transporting drilling and servicing equipment to an oil or gas well site. The equipment, such as a cartridge assembly 20 capable of holding various sizes of continuous or coiled tubing ("CT") 22, is located aboard a trailer portion 12 of the rig which is adapted to be towed by a self-propelled tractor portion 14. A triple axle rear end 16 of the trailer 12 includes a number of hydraulically operated stabilizers 18 for enhancing the trailer's lateral stability once its rear end is located over a wellhead 26 and during well operations. The term "well" is understood herein to mean either an oil or gas well to be drilled, or an existing well or wellhead which is to be tested or serviced. The rig's design is generally symmetrical about its longitudinal axis.

[0060] The rig 10 incorporates a number of drilling and servicing features aboard the trailer 12, including a mast 30 (also referred to as a "derrick"...

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PUM

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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.

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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Application Information

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IPC IPC(8): E21B7/02E21B19/06
CPCE21B19/06E21B7/02
Inventor ANDREYCHUK, MARK T.
Owner TECHNIL CORP
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