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Sliding sleeve opening device

A technology of opening device and sliding sleeve, which is applied to the valve device of wellbore/well, production fluid, wellbore/well components, etc., can solve problems such as low work efficiency, and achieve the effect of improving salvage work efficiency

Active Publication Date: 2016-06-15
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to overcome the disadvantages in the prior art that the opening tools can only be fished out of the wellbore one by one and the work efficiency is low

Method used

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  • Sliding sleeve opening device

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Embodiment Construction

[0020] The present invention will be further described below in conjunction with accompanying drawing.

[0021] figure 1 The cross-sectional structure of the sliding sleeve opening device 10 according to the embodiment of the present invention is schematically shown.

[0022] The sliding sleeve opening device 10 of the embodiment of the present invention includes a hooking part 11 for hooking connection with the sliding bushing, a ball seat 12 connected with the hooking part 11 , and a fishing part 13 connected with the ball seat 12 .

[0023] When the sliding sleeve opening device 10 needs to be fished, the external fishing tool is lowered into the wellbore, and the external fishing tool is first connected with the first sliding sleeve opening device 10 . Then, continue to lower the external fishing tool, and the external fishing tool will push the first sliding sleeve opening device 10 to move to the depth of the wellbore. Until the fishing part 13 of the first sliding sle...

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Abstract

The invention provides a sliding sleeve opening device which comprises a clamping hanging part, a ball seat and a salvage part, wherein the clamping hanging part comprises a connecting section, a clamping hanging section and a first fluid channel; the inner wall of the first fluid channel is provided with a locking part; the ball seat comprises a connecting end connected with the connecting section, a guiding end opposite to the connecting end and a second fluid channel formed between the connecting end and the guiding end. The salvage part is connected with the ball seat. The ball seat is arranged between the clamping hanging part and the salvage part. The sliding sleeve opening device comprises the ball seat provided with the salvage part, and thus the whole sliding sleeve opening device has a salvage function. Thus, a whole sliding sleeve opening device string formed by series connection can be fished out of a shaft in one time through a fishing tool, and the fishing working efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of oil and gas field reservoir transformation, in particular to a sliding sleeve opening device. Background technique [0002] As the development of oil and gas reservoirs advances towards low-permeability and tight reservoirs, the traditional tools and technologies supporting them no longer meet the needs. The sliding sleeve is one of the key tools for communicating the annulus of the oil casing and realizing stratified fracturing during the fracturing process. In the process of oil and gas well completion and gas testing, the oil casing annulus is connected through the opening action of the sliding sleeve to realize circulation, fluid replacement, sand fracturing and other operations. A single-layer construction operation only needs one sliding sleeve, but multi-layer segmental construction requires multiple sliding sleeves to be connected in series on a string. During construction, one stage is opened fr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B34/10E21B43/26
CPCE21B34/10E21B43/26
Inventor 甘振维侯治民胡顺渠刘涛潘健潘敏赵伟王同阁徐涛周怡君胡丹
Owner CHINA PETROLEUM & CHEM CORP