Sliding sleeve tool
A technology of tools and sliding sleeves, which is applied in wellbore/well components, earthwork drilling, sealing/isolation, etc., can solve the problems of high cost, high process requirements, time-consuming, etc., to improve the success rate, reduce requirements, The effect of shortening the working time
Active Publication Date: 2018-12-07
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology
[0004] The opening method of the above-mentioned sliding sleeve tool has high technical requirements. For example, when the special tool is run through the steel wire rope or coiled tubing to open the flow hole, accurate positioning is required, which is time-consuming, and generally requires technicians with rich field operation experience.
When connecting special hydraulic pipelines or cables, it is necessary to configure other surface equipment and transmission pipelines in the well, and the cost is relatively high
Method used
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[0033] In order to make the technical solutions and advantages of the present invention clearer, the exemplary embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all implementations. Exhaustive list of examples. And in the case of no conflict, the embodiments and the features in the embodiments of the present invention can be combined with each other.
[0034] The inventor noticed during the invention process that in conventional high-pressure deep well perforating operations, the perforating gun generally needs to be lowered into the bottom of the well with a section of perforating pipe or screen pipe. Perforated pipe or screen is used for pressure transmission and production channels. During the process of running into the bottom of the well, some solid-phase impurities in the wellbore fluid, such as s...
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The invention provides a sliding sleeve tool. The sliding sleeve tool comprises a lower joint connected with a perforating gun, a pipe body, an upper joint and a sleeve cylinder assembly. A circulating hole is formed in the pipe body, and one end of the pipe body is connected with the lower joint; the upper joint is used for being connected with an oil pipe and connected with the other end of thepipe body; and the sleeve cylinder assembly is connected to the pipe body in a sleeving mode to block the circulating hole, and after the sleeve cylinder assembly is put into a well, the circulating hole is exposed through interaction force in the sleeve cylinder assembly with the preset time, and accordingly, the interior and the exterior of the pipe body communicate. The sliding sleeve tool canbe matched with perforated completion operation and is especially used for perforation operation of the high-pressure deep well, the requirement for sliding sleeve opening can be lowered, the successrate of sliding sleeve opening can be increased, and the operation time can be shortened.
Description
technical field [0001] The invention relates to the field of oil and gas well casing perforation completion technology, in particular to a sliding sleeve tool installed on the perforation tool. The sliding sleeve tool can also be used in the water shutoff process. Background technique [0002] At present, sliding sleeve tools are mainly used in oil and gas well completion and production operations, and are mainly used to provide flow channels between the tubing and the annulus. The use of sliding sleeve tools can play a variety of functions, such as inducing blowout after well completion, circulation killing, gas lift, selective production, testing or implementation of staged stimulation measures in multi-layer wells to achieve multi-layer mixed production, Run the plug to close the well or conduct tubing pressure test and circulation of chemical agents for anticorrosion, etc. [0003] The sliding sleeve tool is mainly composed of upper and lower nipples, flow holes, switc...
Claims
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IPC IPC(8): E21B34/14E21B34/06
CPCE21B34/063E21B34/14
Inventor 何汉平张华卫郑德帅于玲玲李燕
Owner CHINA PETROLEUM & CHEM CORP