Thermal recovery horizontal well thermal compensator

Abstract

The invention relates to the technical field of a thermal compensation device, and provides a thermal recovery horizontal well thermal compensation device. The thermal recovery horizontal well thermal compensation device comprises a tube body, an outer bushing, an elastic component and a connector, wherein the outer side of the tube body is provided with the outer bushing; a groove with an outward opening is formed in the outer wall of the tube body; a resin gasket and a half ring are sequentially arranged in the groove from inside to outside; the outer edge of the half ring is higher than the top of the groove; the elastic component comprises a screw rod and a compression spring; a threaded hole is formed in the outer bushing; a screw rod jacking the half ring is fixedly arranged in the threaded hole; a compression spring in a compression state is arranged between the half ring and the screw rod; the inner wall of the right part of the outer bushing is fixedly connected with the outer wall of the left part of the connector. The thermal recovery horizontal well thermal compensation device has the advantages that the structure is reasonable and compact; through the mutual matching effect among the resin gasket, the half ring and the compression spring, when the resin gasket melts under the high-temperature effect, the spring pushes the half ring to clamp into the groove of the outer wall of the tube body; the fixing effect of the half ring fails, so that the thermal recovery well device is in a free state.

Description

technical field [0001] The invention relates to the technical field of thermal compensators, and relates to a thermal compensator for thermal recovery horizontal wells. Background technique [0002] At present, during the cementing process of thermal recovery wells in oil fields, the casing strings of thermal recovery wells will elongate and deform with the injection of high-temperature steam. Afterwards, it bears compressive stress. In the prior art, the telescopic shorting pin controlled by pins has a small bearing capacity and is cut off during the casing running process, so that the telescopic shorting is shortened in advance, and the effect of the telescopic shorting cannot be realized, resulting in The threaded buckle was damaged, which affected the post-production operation. Contents of the invention [0003] The present invention provides a thermal compensator for horizontal wells in thermal recovery, which overcomes the deficiencies of the prior art, and can effe...

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Problems solved by technology

[0003] The present invention provides a thermal compensator for horizontal wells in thermal recovery, which overcomes the deficiencies of the prior art, and can effectively solve the problem of small bearing capacity of the pins during telescoping and shorting controlled by pins in the prior art, and problems in the casing running process. easy snipping problem

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