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Multifunctional horizontal well completion tubular pile device

A technology for well completion strings and horizontal wells, which is applied in wellbore/well components, production fluids, earthwork drilling and production, etc. It can solve the problems of complicated well completion operations and high costs, achieve high seepage area, low cost, and prevent well Collapsing effect

Active Publication Date: 2012-07-04
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This results in complex completion operations and high costs

Method used

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  • Multifunctional horizontal well completion tubular pile device
  • Multifunctional horizontal well completion tubular pile device
  • Multifunctional horizontal well completion tubular pile device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] Below in conjunction with accompanying drawing, the embodiment of a kind of horizontal well completion pipe string device of the present invention is described further:

[0021] A horizontal well completion string device, comprising a screen 52, an inner flushing pipe 53 and a flushing tool 54, and also includes a hanging packer 51, one end of the screen is connected to the hanging packer, The other end is connected with the flushing tool, the inner flushing pipe is inserted into the sand control string composed of the packer and the screen pipe, and the lower end of the inner flushing pipe is sealed and inserted into the flushing tool.

[0022] The suspended packer includes a packer inner central pipe 16, a setting assembly and a hand-discharging assembly, the setting assembly and the disengaging assembly are arranged on the outer surface of the inner central pipe, and the setting The sealing component is connected with the said throwing component.

[0023] The settin...

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PUM

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Abstract

The invention relates to a horizontal well completion tubular pile device, which comprises a screen pipe, an internal washing pipe, a washing tool and a suspended type packer, wherein one end of the screen pipe is connected with the suspended type packer, while the other end is connected with the washing tool; the internal washing pipe is inserted in a sand-protection tubular pileconsisting of the packer and the screen pipe; and the lower end of the internal washing pipe is inserted in the washing tool in a sealed mode. The horizontal well completion tubular pile device finishes the processes of mud-replacement, acid washing and well completion through only one time, thus the cost is relatively low, the screen pipe well completion mode is optimized, and anannular space outside the pipe can be separated by the suspended type packer to effectively prevent well slough with higher seepage area.

Description

technical field [0001] The invention relates to a horizontal well completion pipe string device, which is used for downhole work in oil and gas fields. Background technique [0002] The completion methods of horizontal wells mainly include open hole completion, gravel packing completion, casing cementing and perforation completion, and screen completion. At present, the well completion method for horizontal wells that is more commonly used is screen completion, and the completion process is not completed at one time due to the different mud replacement, pickling, and well completion devices. This results in complex completion operations and high costs. Contents of the invention [0003] The purpose of the present invention is to overcome the defects of the prior art, and provide a horizontal well completion pipe string device, which is not only easy to operate, achieves one-time completion, but also can optimize the screen pipe completion method. [0004] The present inv...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B43/00E21B43/08E21B33/12
Inventor 孙厚利张建军吕民吴智勇李学良张军左秀石陈颖张鑫陈大钊李丽陈延杨淑英郝瑞辉刘雪乔曲绍刚马薇
Owner PETROCHINA CO LTD
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