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Soluble tail tube plug

A plugging and tailpipe technology, which is applied in the field of dissolvable tailpipe plugging, can solve problems such as clogging and residue, and achieve the effects of expanding the circulation range, simple structure, and easy promotion

Inactive Publication Date: 2019-04-05
SICHUAN SHENGNUO OIL & GAS ENG TECH SERVICE CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the above problems, the present invention proposes a dissolvable tailpipe plug, the purpose of which is to optimize the fragmentation mo

Method used

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Embodiment Construction

[0023] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.

[0024] Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art wi...

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Abstract

The invention discloses a soluble tail tube plug and belongs to the technical field of under-pressure well workover of oil-gas wells and completion underground tools. The soluble tail tube plug comprises a plug body, a plugging sub and a plugging part; the lower portion of the plug body is fixedly connected with the upper portion of the plugging sub; both the upper portion of the plug body and thelower portion of the plugging sub are connected to a string; the peripheral edge of the plugging part is embedded in the part, connected with the plugging sub, of the plug body. The plugging part includes a separator portion, a fixing portion and a shearing portion to connect the separator portion and the fixing portion; the fixing portion is connected with the plug body and the plugging sub to fix the plugging part; the shearing portion is arranged close to the tubular wall of the plug body; the thickness of the shearing portion is less than that of the separator portion; the plugging part is made with soluble aluminum alloy. The soluble tail tube plug has the advantages that the plug herein can be effectively broken; smoothness in a tube is optimized; the problem of residual breakage inthe string is solve; the blocking and other problems are avoided; formation pollution can be maximally reduced; reservoirs are protected.

Description

technical field [0001] The invention belongs to the technical field of oil and gas well workover and well completion downhole tools, and in particular relates to a dissolvable liner plug. Background technique [0002] With the development of oil and gas fields, snubbing operation, as an advanced downhole operation technology, can minimize the pollution of formations, protect reservoirs, increase oil production stably, and is safe, environmentally friendly and low cost. It has been popularized and applied in many oil and gas fields . In order to prevent the fluid in the well from entering the pipe string, plugging tools in the pipe string must be used. During snubbing operation, the snubbing device is mainly to control the pressure of the casing annulus, while the in-pipe control of the original well string is realized by plugging the tubing of the original well string. Tube clogged. [0003] There are two kinds of one-way constant pressure joints of blind plugging type an...

Claims

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Application Information

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IPC IPC(8): E21B33/12
CPCE21B33/12E21B33/1208
Inventor 唐诗国覃芳吴珂王学强杨海罗鑫周昊刘望钟海峰
Owner SICHUAN SHENGNUO OIL & GAS ENG TECH SERVICE CO LTD
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