Layered injection and production integrated pipe column and process

A pipe string and process technology, which is applied in the field of layered injection-production integrated pipe string and process, can solve the problems of complex operation, high crude oil production cost, and low work efficiency, so as to improve production efficiency, simplify well conversion operations, The effect of reducing mining costs

Inactive Publication Date: 2019-02-12
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This technology allows for efficient fluid recovery from underground formations without requiring frequent replacements during drilling changes. It also includes two functions - one serving as an oily liquid collection device while another acts like a valve mechanism used with other equipment such as pipes.

Problems solved by technology

The technical problem addressed in this patented text relates to improving efficient oil exploration during drilling or hydraulic fracturing (HF) processes while avoiding complex procedures associated with separate pipes needed for fluid separation and transportation.

Method used

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  • Layered injection and production integrated pipe column and process
  • Layered injection and production integrated pipe column and process

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Embodiment Construction

[0040] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0041] Such as figure 1 As shown, the embodiment of the present invention provides a layered injection-production integrated pipe string. The pipe string is arranged inside the casing, and the pipe string has an axial inner cavity whose upper end communicates with the wellhead. The pipe string includes:

[0042] The second oil pipe 12, the oil well pump barrel 2 and at least two packers 3 connected sequentially from top to bottom through the first oil pipe 11, and the oil well pump column arranged inside the oil well pump barrel 2 in a dynamic and sealed connection Plug 4;

[0043] Under each packer 3, there is a liquid communication port connecting the inner cavity of the casing and the inner cavity of the pipe string;

[0044] The ...

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Abstract

The invention discloses a layered injection and production integrated pipe column and process, and relates to the technical field of oil production. The layered injection and production integrated pipe column is arranged inside a sleeve and provided with an axial inner cavity with the upper end communicating with a wellhead, and comprises a second oil pipe, an oil-well pump cylinder, two or more packers and an oil-well pump plunger, wherein the second oil pipe, the oil-well pump cylinder, and the two or more packers are sequentially connected through first oil pipes; a liquid circulating opening enabling a sleeve inner cavity and a pipe column inner cavity to communicate is formed below each packer; and the oil-well pump plunger is arranged inside the oil-well pump cylinder, can move in the axial direction of the oil-well pump cylinder, and can move upwards to enter the second oil pipe; and the inner diameter of the second oil pipe is greater than the outer diameter of the oil-well pump plunger. Through the layered injection and production integrated pipe column, not only can oil production work be conducted, but also water injection work can be conducted, thus the pipe column doesnot need to be replaced during well type transformation, well type transformation operation is simplified, and the production efficiency is improved.

Description

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Claims

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Application Information

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Owner PETROCHINA CO LTD
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