Wheeled telescopic continuous creeping tractor used for horizontal well

A technology of horizontal wells and tractors, which is applied in wellbore/well parts, measurement, earthwork drilling and production, etc. It can solve the problems of limited ability to cross depressions and steps, small driving force, complex structure, etc., and achieve strong ability to cross obstacles , large driving force and high operating efficiency

CN102720477BActive Publication Date: 2015-07-22BC P INC CHINA NAT PETROLEUM CORP +1

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Patent Information

Authority / Receiving Office: CN · China
Patent Type: Patents(China)
Current Assignee / Owner: BC P INC CHINA NAT PETROLEUM CORP
Publication Date: 2015-07-22

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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.

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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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