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Wheeled telescopic continuous creeping tractor used for horizontal well

A technology for horizontal wells and tractors, applied in wellbore/well components, surveying, earth-moving drilling, etc., can solve the problems of limited ability to cross depressions and steps, easy to slip, low reliability, etc., and achieve strong ability to cross obstacles. , Not easy to slip, reliable operation

Active Publication Date: 2012-10-10
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the wheeled tractor and the gripping arm sliding type tractor in the prior art also have the following deficiencies: the wheeled tractor is relatively mature in foreign technology, but there are also deficiencies, such as small driving force, easy to slip, complex structure, reliable inferiority
The grabbing arm sliding retractor is a relatively advanced retractor at present, and its core lies in the design of the grabbing arm, but the ability of the grabbing arm used at present is greatly limited in its ability to span depressions and steps

Method used

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  • Wheeled telescopic continuous creeping tractor used for horizontal well

Examples

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Embodiment 1

[0030] The invention is a traction device used for transporting downhole instruments to horizontal wells, and can send related well logging instruments to designated positions of the horizontal wells.

[0031] The invention mainly includes two sets of locking telescopic units with the same structure, and the two sets of locking telescopic units alternately expand and contract to complete the traction action. There are many mechanical structures and methods for two sets of locking telescopic units to alternately expand and contract to complete the traction action, and this embodiment is preferably a hydraulic cylinder structure.

[0032] The content of the invention will be described in detail below in conjunction with the accompanying drawings.

[0033] Such as figure 1 As shown, a wheeled telescopic continuous crawling tractor of the present invention includes a first locking telescopic unit 14 and a second locking telescopic unit 16, and the first locking telescopic unit 14...

Embodiment 2

[0038]This embodiment is basically the same as the above-mentioned embodiment, the main difference is that the hydraulic cylinder structure is replaced by an air cylinder, etc., as long as the first locking telescopic unit 14 and the second telescopic locking unit 16 can be alternately stretched and retracted to complete the traction action.

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Abstract

The invention discloses a wheeled telescopic continuous creeping tractor used for a horizontal well, which comprises a locking telescopic unit; the locking telescopic unit at least comprises a first locking telescopic unit and a second locking telescopic unit; the first locking telescopic unit is connected with the second locking telescopic unit; and the first locking telescopic unit and the second locking telescopic unit stretch out and draw back alternately to accomplish a traction action. The wheeled telescopic continuous creeping tractor used for a horizontal well has the advantages of reliability in operation, large driving force, and capability of realizing two-way creeping, and can move in the reverse direction for unfreezing in case of freezing underground.

Description

technical field [0001] The invention relates to a wheel-type telescopic continuous crawling tractor used for running and transporting various logging instruments in the pipeline of a horizontal well. The invention can drag cables and carry downhole tools to crawl continuously in the pipeline. Background technique [0002] In the process of oil and gas development, the use of horizontal wells to develop oil and gas reservoirs has been widely used due to its outstanding advantages. However, a difficult point in the development of horizontal wells is how to smoothly send various downhole instruments into the horizontal section of the horizontal well. [0003] The more advanced method at this stage is to use the downhole traction device to send the instrument into the horizontal section of the horizontal well. Currently used downhole traction devices mainly contain two categories, wheeled tractors and grabbing arm sliding tractors. For example, Chinese Patent No. "200310105801...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B47/00E21B23/00
Inventor 文涛李现东罗钟鸣何健粟超魏磊叶哲伟梁政
Owner BC P INC CHINA NAT PETROLEUM CORP
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