Branch hole positioning guiding tool

A technology for importing tools and branch wells, applied in the direction of wellbore/well components, earthwork drilling and production, etc., can solve the problems of low accuracy, time-consuming and laborious, difficult hole finding and importing, etc., and achieve the effect of simple operation

Active Publication Date: 2015-11-04
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

It overcomes the difficulty of finding and introducing the existing elbow

Method used

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  • Branch hole positioning guiding tool
  • Branch hole positioning guiding tool
  • Branch hole positioning guiding tool

Examples

Experimental program
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Embodiment Construction

[0012] Such as figure 1 , figure 2 , image 3 As shown, a branch wellbore positioning introduction tool is composed of an anchoring device 1, an upper sealing device 2, a positioning introduction mechanism 3 and a lower sealing device 4; the anchoring device 1 is composed of an anchor body 5 and an anchor fluke 6, and the anchor fluke 6 is installed on the anchor body 5, the upper sealing device 2 includes a central tube 7, the lower end of the anchor body 5 is connected to the central tube 7, the upper sealing rubber tube 8 is set on the central tube 7, and the upper end of the upper sealing rubber tube 8 is pushed against the end surface of the central tube 7 The lower end of the upper and upper sealing rubber cylinders 8 is provided with a pressure cap 9, and the pressure cap 9 is fixed on the central tube 7 through shear nails 10, and the lower end of the pressure cap 9 is provided with a retaining ring 27; the positioning introduction mechanism 3 includes a telescopic t...

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Abstract

The invention relates to the technical field of coiled tubing multilateral well repairing work, especially to a branch hole positioning guiding tool which comprises an anchor body and anchor flukes installed on the anchor body. An upper sealing device comprises a central pipe, wherein the lower end of the anchor body is connected to the central pipe, and an upper sealing rubber cylinder sleeves the central pipe. The upper end of the upper sealing rubber cylinder abuts against the end face of the central pipe, a pressure cap is arranged on the lower end of the upper sealing rubber cylinder fixed on the central pipe through a shear pin, and the lower end of the pressure cap is provided with a stopper ring. The branch hole positioning guiding tool can smoothly and rapidly guide a bend pipe, guiding and sealing process can be completed at one time, and operation is simple. The branch hole positioning guiding tool overcomes the defect that hole-finding and guiding for a bend pipe is difficult, labor-consuming, time-consuming and inaccurate in the prior art.

Description

Technical field: [0001] The invention relates to the technical field of coiled tubing branch well workover operations, in particular to a branch well hole positioning and introduction tool. Background technique: [0002] With the deepening of oilfield development, the development of new technologies and processes plays a key role in the stable production and increase of oilfield. Multilateral well is a new technology to increase the production of oil and gas wells by increasing the drainage area of ​​oil and gas reservoirs, and it is one of the major technologies in the field of drilling in the 21st century. For reservoir development, multilateral well technology is helpful to formulate a reasonable development plan and effectively develop prolific reservoirs at a lower cost. [0003] Compared with the gradual maturity of branch well drilling and completion technology, branch well operation technology still stays at the inefficient stage of traditional operation tools and t...

Claims

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Application Information

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IPC IPC(8): E21B23/00
Inventor 王立军姜伟刘源良钦焕光马文天李鸿程周海礁张军蔡亮刘斯迪彭继明
Owner BC P INC CHINA NAT PETROLEUM CORP
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