Tracing sliding sleeve

Abstract

The invention provides a tracing sliding sleeve, and relates to the technical field of oil gas production equipment. The tracing sliding sleeve comprises an outer casing pipe, a first inner casing pipe and a second inner casing pipe. The pipe wall close to the first end of the outer casing pipe is provided with a tracing agent installing part communicating with the interior and the exterior of theouter casing pipe. A first ball base is arranged in the first inner casing pipe, the first inner casing pipe penetrates through the outer casing pipe, and the tracing agent installing part is shielded. A second ball base is arranged in the second inner casing pipe, the second inner casing pipe penetrates through the outer casing pipe, the second inner casing pipe is close to the second end of theouter casing pipe relative to the first inner casing pipe, and the pipe wall of the position, corresponding to the second inner casing pipe, of the outer casing pipe is provided with a through hole.The inner diameter of the first ball base is larger than that of the second ball base, the first inner casing pipe and the outer casing pipe are sealed, and the second inner casing pipe and the outercasing pipe are sealed. By means of the tracing sliding sleeve, fracturing and producing are conducted in the same pipeline, and meanwhile a product can be traced.

Description

technical field [0001] The invention relates to the technical field of oil and gas production equipment, in particular to a tracer sliding sleeve. Background technique [0002] Sliding sleeves are downhole tools in oil and gas production, and are widely used in oil wells, gas wells, and water injection wells in oil fields. [0003] In order to realize the detection of the products of each production layer in the later mining process, a tracer device is installed on the sliding sleeve. In order to make the sliding sleeve multifunctional, the production sliding sleeve and the fracturing sliding sleeve are combined together, that is, one casing is connected and one channel is used for fracturing and production. However, when the functions of the fracturing sleeve and the production sleeve are combined, it is impossible to combine the tracer device, because when the fracturing sleeve performs fracturing work, the fracturing fluid will affect the tracer device, that is, fracturi...

AI Technical Summary

Problems solved by technology

However, when the functions of the fracturing sleeve and the production sleeve are combined, it is impossible to combine the tracer device, because when the fracturing sleeve performs fracturing work, the fracturing fluid will affect the tracer device, that is, fracturing The liquid will have a greater impact on the tracer device, take away a large amount of tracer, and seriously damage the tracer device

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