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Bridge plug

A bridge plug and center pipe technology, which is applied in the field of oil exploration, can solve the problems of difficult grinding and milling of bridge plugs, and achieve the effects of increasing economic benefits, shortening drilling and removing time, and shortening production time.

Inactive Publication Date: 2016-07-06
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The main purpose of the present invention is to provide a bridge plug to solve the problem that the bridge plug in the prior art is not easy to grind

Method used

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Embodiment Construction

[0029] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0030] It should be pointed out that the following detailed description is exemplary and intended to provide further explanation to the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0031] It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application.

[0032] As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understoo...

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Abstract

The invention provides a bridge plug. The bridge plug comprises a central pipe made of light alloy. A tool connector is arranged at the upper end of the central pipe and arranged on the outer side of the central pipe in a sleeving mode. The bridge plug further comprises a first slip assembly and a second slip assembly which extend in the axial direction of the bridge plug. The first slip assembly and the second slip assembly are both arranged on the outer side of the central pipe in a sleeving mode, and the first slip assembly is connected with the tool connector. The central pipe of the bridge plug is made of the light alloy, thereby being capable of being drilled easily; the drilling time of the bridge plug is shortened, and metal chips generated during grinding and milling can be conveniently discharged to the ground. The bridge plug has the characteristic of being rapidly drilled, so that the production time is effectively shortened, and the economic benefits are increased.

Description

technical field [0001] The invention relates to the field of oil exploitation, in particular to a bridge plug. Background technique [0002] Bridge plugs are commonly used downhole tools in oil fields, and are usually sent downhole by cables or tubing. The remarkable feature of oil and gas reservoirs such as tight oil or shale gas is extremely low permeability. At present, the main production methods of such oil and gas reservoirs in the world are drilling horizontal wells and multi-stage fracturing reservoir stimulation methods, while fast drilling bridge plugs Multi-stage fracturing technology is just one of several main methods of reservoir stimulation. The fast-drilling bridge plug multi-stage fracturing technology uses the cable tool to lower the fast-drilling bridge plug and perforating gun into the wellbore in one trip. Until the fracturing of all predetermined intervals is completed, all the bridge plugs in the wellbore are quickly drilled out once the fracturing i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B33/134
Inventor 袁新生张勇阿里木江·司迪克赵云峰
Owner PETROCHINA CO LTD
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