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Downhole full-bore infinite sliding-pin slide bushing switch

A sliding sleeve switch, infinite level technology, applied in the direction of production fluid, wellbore/well components, wellbore/well valve device, etc., can solve the problem of unfavorable sliding sleeve tool maintenance and maintenance, repair and replacement process complex, working environment Complexity and other issues, to achieve the effect of simple structure, ensuring stability, and satisfying repeated switching

Active Publication Date: 2017-05-31
黑龙江赛恩思科技信息咨询服务有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] (3) The fracturing identification component and the fracturing opening component of the main components of the sliding sleeve need to be connected to the casing and lowered into the wellbore together with the casing. It is the trigger mechanism of the cam shaft switch, which makes the part that goes into the wellbore with the casing more complicated. Since this part of the structure needs to be in the underground wellbore for a long time, the working environment is complicated, so it is easy to cause damage, and its repair and replacement The process is complicated, which is not conducive to the maintenance and maintenance of sliding sleeve tools

Method used

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  • Downhole full-bore infinite sliding-pin slide bushing switch
  • Downhole full-bore infinite sliding-pin slide bushing switch
  • Downhole full-bore infinite sliding-pin slide bushing switch

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Embodiment Construction

[0081] Below in conjunction with accompanying drawing, the present invention will be further described:

[0082] Depend on figure 1 As shown: the sliding pin sliding sleeve switch of the present invention includes a sliding sleeve main body 1 , a falcon block identification structure 2 and a falcon block switch mechanism 3 .

[0083] Depend on Figure 2A and Figure 2B As shown: the main body 1 of the sliding sleeve is lowered into the part to be fractured together with the casing, and is the actuator for opening and closing the fracturing. It specifically includes an upper head 1-1, a sliding sleeve shell 1-2, a lower head 1-3 and a fracturing drum 1-4.

[0084] Depend on image 3 As shown: the upper head 1-1 is cylindrical, and its upper port and lower port are respectively provided with internal threads and external threads.

[0085] Depend on Figure 4 and Figure 5 As shown: the sliding sleeve shell 1-2, its main body is cylindrical, the upper port and the lower po...

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Abstract

The invention discloses a downhole full-bore infinite sliding-pin slide bushing switch and solves the problems of inconvenience in maintenance and the like due to the fact that the conventional fracturing slide bushing needs to be wholly lowered into downhole. The downhole full-bore infinite sliding-pin slide bushing switch specifically comprises a main slide bushing body and a tenon block mechanism, wherein the tenon block mechanism comprises a tenon block recognition mechanism and a tenon block switch mechanism, during use, the main slide bushing body is lowered into the downhole, and the tenon block mechanism is lowered for recognizing a fracture layer when a fracture channel needs to be opened or closed. The slide bushing switch has high recognition degree for different fracture layers, parts are convenient and simple to replace and maintain, and the working stability and accuracy are enhanced greatly.

Description

technical field [0001] The invention relates to a downhole layered fracturing tool, in particular to a downhole sliding sleeve switch. Background technique [0002] With the rapid development of drilling technology, downhole layered fracturing tools are becoming more and more popular. As a component used in stratified fracturing tools to communicate the reservoir and the wellbore, the downhole sleeve switch plays an irreplaceable role in improving oil extraction efficiency and optimizing energy allocation. [0003] The existing sliding sleeve switch can realize repeated opening and fracturing of multiple layers downhole, but the structure of running into the well is relatively complicated, and the identification effect of the sliding sleeve switch on the fracturing layer is not ideal. [0004] For example, the application number is 201510701193.8 for the full-bore infinite-stage cam shaft switch type fracturing sleeve, which realizes the infinite-stage opening of the slidin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/26E21B34/14
CPCE21B34/14E21B43/26
Inventor 丁宇奇姚利明董日志杨明刘德赵金宇刘巨保
Owner 黑龙江赛恩思科技信息咨询服务有限公司
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