Wedge-shaped throttle valve structure capable of being mechanically sealed and used for oil field gas injection and oil extraction wellhead

Abstract

The invention discloses a wedge-shaped throttle valve structure capable of being mechanically sealed and used for an oil field gas injection and oil extraction wellhead. The wedge-shaped throttle valve structure comprises a main body mechanism and an auxiliary body mechanism. The auxiliary body mechanism is arranged on the outer surface of the main body mechanism, a replacement pipe wall A or a replacement pipe wall B is arranged in an inner plate, a placing groove is formed in the outer surface of the inner plate, a stop block is fixedly installed on the inner wall of the placing groove, thereplacement pipe wall A or the replacement pipe wall B is arranged in the placing groove, the replacement pipe wall A and the replacement pipe wall B do not coexist, and an outer groove opening communicates with the placing groove. The replacement pipe wall A is a member made of polytetrafluoroethylene materials, and the replacement pipe wall B is a member made of carbon fiber materials. Polytetrafluoroethylene has good smoothness and is suitable for conveying gas, kinetic energy loss of the gas can be reduced, carbon fibers have good corrosion resistance and are suitable for conveying oil liquid, damage of the oil liquid to the inner wall of a transverse pipe is reduced, and cost is reduced; and meanwhile, the transverse pipe can convey the gas and the oil liquid.

Description

technical field [0001] The invention relates to the technical field of gas injection and oil production wellheads in oil fields, in particular to a mechanically sealable wedge-shaped throttling valve structure for oil field gas injection and oil production wellheads. Background technique [0002] An oil field is the sum of oil and gas reservoirs in the same oil and gas production area under the control of a single geological structure (or stratum). Reservoirs are called gas fields. Oil fields refer to specific areas where crude oil is produced. Sometimes they are the general term for oil layers accumulated underground in specific areas. In a broad sense, several oil areas are collectively called oil fields, such as Daqing Oil Field, North Sea Oil Field in Britain, and Tyumen in Russia. Oil fields, etc. Oil fields are hydrocarbons that naturally exist underground, and they are liquids under surface conditions. On the contrary, they are still gas under surface conditions, and ...

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Problems solved by technology

[0003] When exploiting gas and oil fields, it is necessary to use pipelines to transport oil or gas from the ground. Since pipelines are used, throttle valves are essential. The current throttle valves are not replaceable due to the structure of the inner wall of the pipe, so they can only be used for oil. Or one of the gas is transported, and the function is relatively single. Secondly, when the throttle valve is closed, the two valve bodies that are engaged with each other become loose with the passage of time, resulting in poor sealing effect.

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