Single-pipe thermal recovery wellhead device

Abstract

The invention belongs to the technical field of oil field wellhead devices, and particularly relates to a single-pipe thermal recovery wellhead device. The single-pipe thermal recovery wellhead device comprises a first branch pipe, a second branch pipe and a four-way pipe, the first branch pipe is fixedly installed on the lower portion of the side edge of the four-way pipe, and the second branch pipe is fixedly installed on the upper portion of the side edge of the four-way pipe. A fixing clamping piece used for butt joint is fixedly installed on the outer surface of the side edge of the second branch pipe, and a rotary fixing piece used for adjusting the angle is arranged in the middle of the four-way pipe. According to the single-pipe thermal recovery wellhead device, a user can install combined clamping plates of corresponding models on a lower clamping cover and an upper clamping cover according to the calibers of pipelines, so that the pipelines of different calibers can be in butt joint and fixed, and the flexibility of the single-pipe thermal recovery wellhead device during installation and operation is improved; and by the arrangement of the rotary fixing piece, a steering adjusting structure can be formed in the middle of the four-way pipe, so that the using angle between the first branch pipe and the second branch pipe is adjusted, the single-pipe thermal recovery wellhead device is provided with the steering adjusting structure, and the using flexibility of the single-pipe thermal recovery wellhead device is improved.

Description

technical field [0001] The invention belongs to the technical field of oilfield wellhead devices, in particular to a single-tube thermal recovery wellhead device. Background technique [0002] The single-tube thermal recovery wellhead device is a wellhead device used in mechanical oil recovery wells, especially suitable for thermal oil recovery wells developed by steam injection, to transport oil bodies in the wells. [0003] The patent document of patent number CN201027522Y discloses a double-tube thermal recovery wellhead device, which includes a casing flange, a large cross, a double-pipe main body, a casing gate valve, a production gate valve, a steam injection gate valve and a test Gate valve; the bottom end of the large four-way is fixedly installed with the casing flange, the side end of the large four-way is fixedly installed with a casing gate valve, the top of the large four-way is fixedly installed with the bottom end of the double-pipe main body, and the double-p...

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Problems solved by technology

[0004] The existing single-tube thermal recovery wellhead device has certain disadvantages in the process of use. The traditional single-tube thermal recovery wellhead device adopts a fixed structure of bolts and flanges, so that it can only be used for oil pipelines of corresponding diameters, thereby reducing its cost. The scope of application makes it impossible to connect pipes of different calibers; secondly, the traditional single-tube thermal recovery wellhead device does not have a steering adjustment structure. When the single-tube thermal recovery wellhead device is installed and used, it cannot flexibly adjust the single-tube thermal recovery The use angle of the wellhead device reduces the flexibility of the single-tube thermal recovery wellhead device; at the same time, the traditional single-tube thermal recovery wellhead device cannot be applied to different types of fixed structures, which increases the operation of the single-tube thermal recovery wellhead device when installing and docking Difficulty, bring certain adverse effects to users

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