High-temperature-resistant heat-insulation blowout preventer

Abstract

The invention discloses a high-temperature-resistant heat-insulation blowout preventer. The high-temperature-resistant heat-insulation blowout preventer comprises a tubular column base body, a cylinder sleeve, a pressing piece, a rubber core and a cooling device; the cylinder sleeve, the pressing piece and the rubber core are all installed in the tubular column base body, and a hydraulic control channel of the cylinder sleeve is located above the rubber core; the cylinder sleeve can move in the tubular column base body in the axial direction and abut against the pressing piece, so that the rubber core is pressed and sealed by the pressing piece; a containing cavity is formed in the abutting end of the cylinder sleeve, and when the cylinder sleeve abuts against the pressing piece, the pressing piece and the rubber core are located in the containing cavity; and the cooling device is used for cooling the rubber core. The high-temperature-resistant heat-insulation blowout preventer can reliably work under the high-temperature condition, and normal operation of well control equipment is guaranteed.

Description

technical field [0001] This application relates to but not limited to wellhead heat insulation technology, especially a high temperature resistant heat insulation blowout preventer. Background technique [0002] In recent years, the operation volume of high-temperature, ultra-high-temperature wells and heavy oil thermal recovery wells has been increasing, and the wellhead temperature has reached above 200°C, even as high as 350°C. Due to the wellhead operating conditions, the production cycle is long and the cost is high by suspending production by killing the well and then performing workover and testing. Contents of the invention [0003] The embodiment of the present application provides a high temperature resistant heat insulation blowout prevention device, which can work reliably under high temperature conditions and ensure the normal operation of well control equipment. [0004] The embodiment of the present application provides a high temperature resistant heat ins...

AI Technical Summary

Problems solved by technology

[0002] In recent years, the operation volume of high-temperature, ultra-high-temperature wells and heavy oil thermal recovery wells has been increasing, and the wellhead temperature has reached above 200°C, even as high as 350°C. Wellhead operating conditions, suspending production by killing the well, and then performing workover and testing operations have a long cycle and high cost

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