Casing hanging type thermal recovery casing head

Abstract

The invention discloses a casing-hanging type thermal recovery casing head, which relates to the field of casing head technology and includes an oil layer casing, a casing body, a flange joint, a hanger and slips. The inner wall of the oil layer casing is symmetrically opened with The first groove, the inner wall of each first groove is provided with a turning groove, the inner wall of the turning groove is rotatably connected with a magnet, the magnet is fixedly connected with an expansion ball, the expansion ball is equipped with a thermal expansion material, and the end of the expansion ball away from the magnet is fixedly connected with a The rotating shaft is fixedly connected with the driving wheel on the side wall of the rotating shaft. In the present invention, structures such as resonant rods, elastic airbags and tuning forks are arranged to generate noise and vibration when the high-speed fluid passes through the casing of the oil layer, thereby driving the tuning fork to vibrate synchronously, driving the resonant rod to vibrate to squeeze the elastic airbag, and the elastic airbag draws in the external The gas is extruded into the rubber ring, so that the rubber ring expands when the fluid passes through, and squeezes and fills the gaps between the components, further improving the sealing performance of the casing head.

Description

Technical field [0001] The present invention relates to the field of sleeve head, in particular, to a sleeve hanging hot set. Background technique [0002] The tube head is used to secure the well port of the drilling, connect the wellhead casing column to support the gravity of the technology sleeve and the oil layer casing, seal the annular space between the tubes, to mount the anti-blower, tube head The oil production tree provides a transition connection, and the construction operations such as supplementation, monitoring and filling balance liquid can be made through the two side ports on the tube head body. [0003] With the development of heavy oil, the performance requirements of the sleeve head are higher, and the thermal steam of about 300 ° C is required, and a pressure seal is formed between the inner and outer tube columns. The tube is hot at high temperatures, so that the surface layer can be moved, and the post-oil production is adversely affected. Inventive conte...

AI Technical Summary

Problems solved by technology

[0003] With the development of thermal recovery of heavy oil, the performance requirements of the casing head are higher. It is necessary to pass hot steam with a temperature of about 300°C and form a pressure seal between the inner and outer strings. The pipe is heated and elongated under the action of high temperature, which makes the surface casing move and adversely affects the later oil recovery operation

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