A kind of oil production wellhead production valve

Abstract

The invention discloses an oil producing wellhead production valve used in an oil producing wellhead production process. The production valve comprises an exhaust valve body and a backflow valve body. A gas-liquid channel is formed in the exhaust valve body, and an exhaust valve element spring and an exhaust valve element are arranged in a center hole. A backflow hole is formed in the backflow valve body, and a backflow valve element spring and a backflow valve element are arranged in a center hole. The backflow valve body and the exhaust valve body are connected through a bolt and fastened, the exhaust valve element and the backflow valve element abut together, and a backflow gap is formed among the backflow valve element, the exhaust valve body and an inner cavity of the backflow valve body. The oil producing wellhead production valve is installed in the wellhead production process of an oil producing well, accidentally-rising pressure of the wellhead outwards-transporting process can be released, environmental pollution events caused by leakage of crude oil in a pipeline caused by the fact that leakage is not found in time are avoided, the basic functions of a normal gas exhaust check valve are achieved, and the situation that an oil producing pump generates gas locking to affect production of the oil well is avoided.

Description

technical field [0001] The invention relates to a wellhead production valve in the petroleum industry, in particular to an oil production wellhead production valve, which is used in the wellhead production process of an oil production well. Background technique [0002] At present, in the process of oil and gas production, a check valve is installed in the casing gas discharge process connected to the wellhead Christmas tree. When the pressure of the casing gas is greater than the pressure of the external transportation process, the valve plate of the single flow valve is opened to discharge the casing gas, which is collected through the external transportation process. After that, it enters the export pipeline together with the oil and gas produced by other oil wells. During production, if the valve on the export pipeline or the export process is cut off due to the valve plate falling off, the emergency shut-off valve actuator of the export main pipeline malfunctions, etc.,...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a production valve at the head of an oil production well, which can automatically open the pressure relief and solve the problem of pipeline pressure increase caused by the accidental cut-off of the external pipeline during production and the failure of oil well production to stop in time. The problem of pressure rise, to avoid the leakage of crude oil in the weak parts of the pipeline

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