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Perforation device and method for perforation by using perforation device

A technology of perforating device and perforating gun, which is applied in the direction of earthwork drilling, mining fluid, wellbore/well parts, etc., which can solve the problems of complex device, high construction cost and uncertainty, so as to reduce construction difficulty and reduce construction cost. Cost, safety improvement effect

Active Publication Date: 2015-04-29
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In this method, it is necessary to use electric power to realize the bridge plug setting, which brings certain uncertainties to the construction.
In addition, the device used in this method is also more complicated, resulting in higher construction costs

Method used

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  • Perforation device and method for perforation by using perforation device
  • Perforation device and method for perforation by using perforation device
  • Perforation device and method for perforation by using perforation device

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Embodiment Construction

[0028] The present invention will be further described below with reference to the accompanying drawings.

[0029] figure 1 A perforating device 100 according to the present invention is shown schematically. In this embodiment, the perforating apparatus 100 includes a power perforator 102 connected by a cable 110 , a bridge plug setting tool 200 , and a bridge plug 50 driven by the bridge plug setting tool 200 . The perforator 102 , the bridge plug setting tool 200 and the bridge plug 50 are assembled in sequence from upstream to downstream, and the perforator 102 and the bridge plug setting tool 200 are connected by screw threads to facilitate the assembly of the perforating device 100 . The bridge plug setting tool 200 and the bridge plug 50 pass the first scissors 103 (eg Figure 4 shown) connect the two.

[0030] figure 2 A first embodiment of the perforator 102 of the present invention is shown. The perforator 102 includes a cable joint 111 disposed at the upstream...

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Abstract

The invention relates to a perforation device and a method for perforation by using the perforation device. The perforation device comprises an electric perforator, a bridge plug setting tool and a bridge plug, wherein the bridge plug setting tool is fixedly installed on the downstream portion of the electric perforator, and the bridge plug is connected with the bridge plug setting tool through a first shear pin. The perforation device further comprises a locator. By means of the perforation device, the bridge plug is used for plugging, and the plug surface is accurately controlled.

Description

technical field [0001] The invention relates to an oil and gas well completion device, in particular to a perforation device. The invention also relates to a method of perforating using such a perforating device. Background technique [0002] In the stimulation and reconstruction of horizontal wells in shale gas reservoirs, the combination of bridge plugs set by relying on electricity and cable perforation is a method. In this method, the bridge plug, power bridge plug setting tool and wireline perforating gun first need to be attached to the string and run into the well together. When the pipe string enters the horizontal section, the bridge plug setting tool, bridge plug and perforating gun are sent to the target interval with the help of the liquid pumped into the well, and then the cable is energized to start the bridge plug setting tool. After the bridge plug is set, throw away your hand and lift the perforating gun to the perforating position. The cable is energized ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/11
CPCE21B43/11E21B43/119
Inventor 李洪春李奎为贾长贵周健王宝峰徐胜强卫然张旭吴峙颖
Owner CHINA PETROLEUM & CHEM CORP