Electromagnetic pneumatic switch well valve of natural gas well

Abstract

An electromagnetic pneumatic switch well valve of a natural gas well is applied to a natural gas well site and a natural gas transmission pipeline. The electromagnetic pneumatic switch well valve is characterized by being provided with a cylindrical-shaped main valve core in a valve body; a valve cover is fixed at the upper part of the main valve core; a spring is arranged in the main valve core;a pressure balancing hole is arranged on the wall of the main valve core; intercommunication holes are arranged in the valve body and the valve cover; a magnetic head fixing base is connected with thetop part of the valve cover; a pressure releasing hole is arranged on the valve cover; a traverse electromagnetic head and a longitudinal electromagnetic head are fixed on the magnetic head fixing base by a union cap; and a ring-shaped groove is arranged on the outer wall of a longitudinal magnetic core, wherein the position of the ring-shaped groove is characterized in that when the longitudinalmagnetic core is lifted upwards and then can open the intercommunication holes completely, a traverse magnetic core can lock the longitudinal magnetic core. The electromagnetic pneumatic switch wellvalve has the advantages that the natural gas wellhead pipeline can be applied to; the valve switch can be finished by relying on a weak electromagnetic force without relying on the drive of an external connection air source; the remote control on a switch well and an excessive-under pressure well by a natural gas wellhead is achieved by a control circuit; the gas source is automatically cut off at excessive-under pressure for achieving protection; and remote control for opening and closing and under pressure automatic closing can be achieved.

Description

technical field [0001] The invention relates to the technical field of oilfield gas production, in particular to an electromagnetic pneumatic switch valve on a natural gas well site and a gas transmission pipeline. Background technique [0002] In the production process of natural gas wells, when the downhole throttling process is used for production, the wellbore and surface pipelines can be designed with medium and low pressure. At this time, in order to prevent the damage of the downstream medium and low pressure pipelines and corresponding equipment due to the failure of the downhole choke, and to prevent a large amount of natural gas leakage due to the rupture of the downstream pipeline, a high and low pressure safety protection cut-off device should be installed at the wellhead. At this time, the work of opening and closing the well can only be completed at the well site. When the gas field area is large, the number of production wells is large, and the well positions...

AI Technical Summary

Problems solved by technology

However, gas wells are located in scattered locations and have no external power supply, so traditional valves cannot meet the needs of the site.

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