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Small hole well completion lifting technology tubular column and use method thereof

A technology for process pipe strings and wellbore, which is applied in the field of tools, can solve the problems of lifting pipe strings and inconvenient positioning, and achieve the effect of simple structure, easy operation, and reduced control structure

Inactive Publication Date: 2013-06-19
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the deficiencies of the prior art, solve the problems of inconvenient lifting and positioning of the above-mentioned lifting string during use, and realize fast and convenient workover operations. One of the purposes is to provide a Slim hole completion lifting process string; the second purpose is to provide the use method of the slim hole completion lifting process string

Method used

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  • Small hole well completion lifting technology tubular column and use method thereof
  • Small hole well completion lifting technology tubular column and use method thereof
  • Small hole well completion lifting technology tubular column and use method thereof

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Embodiment Construction

[0043] Such as figure 1 , figure 2 , image 3 The shown slim hole completion lifting string assembly includes a hollow oil rod 1, a rod pump 2, an anchor 5 and a lifting mandrel equipped with a mechanism that cooperates with the anchoring mechanism of the anchor 6. The anchor is an anchor lock sleeve 5, and the anchor lock sleeve 5 is provided with a split lock pawl 51, and the anchor of the lifting cylinder 6 and the anchor is The matching mechanism of the fixed mechanism is the reaming 61 matched with the split lock claw 51 of the anchor lock sleeve 5, and the lower end of the reaming 61 of the lifting working cylinder is provided with a supporting boss 62. A screen pipe 3 and a plug 4 are arranged below the rod pump.

[0044] The method of use is as follows: when completing the well, follow the steps in sequence: (1) Lower the lifting mandrel 6 to the casing position corresponding to the depth where the rod pump 2 should hang; (2) The hollow oil rod 1, the rod pump 2 a...

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Abstract

The invention provides a small hole well completion lifting technology tubular column and a use method of the small hole well completion lifting technology tubular column, and solves the problems that an existing lifting tubular column in an oil field is inconvenient to lift and locate in the using process, and the like. The small hole well completion lifting technology tubular column comprises a hollow oil rod, a rod pump, an anchor and a lifting operating barrel, wherein the lifting operating barrel is provided with a mechanism which is matched with an anchoring mechanism of the anchor. At the time of well completion, firstly, the lifting operating barrel is placed downwardly to the position, corresponding to the depth where the rod pump is to be hung, of a casing pipe, then a connected combination of the hollow oil rod, the rod pump and the anchor is placed downwardly, and the anchoring mechanism of the anchor and the corresponding and matching mechanism on the lifting operating barrel are used for accurate location. At the time of an overhaul, the hollow oil rod is lifted upwardly to enable the anchoring mechanism to break away from the lifting operating barrel, and then the rod pump can be taken out. The small hole well completion lifting technology tubular column has the advantages of being simple in structure, easy to control, convenient to overhaul and operate and the like, and is mainly used for an oil well with a small hole.

Description

technical field [0001] The invention relates to a tool used in oil well development, in particular to a slimhole well completion and lifting process string, and also relates to a method for using the process string. Background technique [0002] At present, the commonly used oil-free lifting strings mainly include hollow oil rods, rod pumps, and anchors. When in use, it is necessary to lower the pipe string to the predetermined position of the casing and anchor the anchor on the casing to realize the normal operation of the pump and lift the fluid from the hollow oil rod to the wellhead. During workover operations such as pump inspection, the anchor is released to achieve tubing-free lifting. However, for slimhole oil wells, due to the reduction of borehole diameter, there are difficulties in the design and practical application of anchors, which cannot effectively meet the technical requirements of low-cost, fast, convenient, and efficient development of slimholes, and als...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/00E21B17/00E21B23/01
Inventor 魏斌古光明孟永李蓉蒋小刚康秀华闫文文祁辛华姜国良马恩才费秀英刘晓燕
Owner CHINA PETROLEUM & CHEM CORP
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