Anticorrosive fluid director for natural gas

Abstract

The invention discloses an anticorrosive fluid director for a natural gas. The anticorrosive fluid director comprises a body, a supporting plate, a ball body and an upper ball seat, wherein a liquid inlet hole is formed inside the body, the supporting plate is fixed at the lower part of the liquid inlet hole, the upper ball seat is fixed at the upper part of the liquid inlet hole, the interior of the upper ball seat communicates with the liquid inlet hole, a supporting shaft is arranged at the middle part of the supporting plate, a spring sleeves the supporting shaft, a plurality of small holes are formed in the supporting plate, a limiting plate is arranged at the top end of the spring, a gap is reserved between the bottom of the limiting plate and the top end of the supporting shaft, a lower ball seat is fixed on the limiting plate, and a through hole communicating with the liquid inlet hole is formed in the middle part of the ball body; a connecting shaft is rotatably arranged in a sleeve, and the end part of the connecting shaft is connected with the upper part of the ball body. Through adjusting the size of a communicating cross section of the liquid inlet hole by an adjusting mechanism, an upwards-moving oil gas is blocked, the an enlargement of a wellhead overflowing or well kick accident caused by the upward moving of oil gas flow is prevented, and the occurrence of a well control mailsadjustment is avoided.

Description

technical field [0001] The invention relates to the field of natural gas exploitation, in particular to a natural gas anti-corrosion deflector. Background technique [0002] During the drilling operation of natural gas well production, formation fluid (oil, gas and water) inevitably enters the wellbore. Generally, the formation fluid entering the wellbore is pressed into the well by heavy mud through the kill manifold. When drilling into an oil and gas formation with abnormal high pressure, the oil flow in the high pressure oil and gas formation moves upwards under the pressure and drives the mud to the wellhead together. The upward movement of the oil flow causes drilling failure. Otherwise, the well control will be out of control. Usually, it is easy to cause a blowout accident, and the well killing operation of the high-pressure oil and gas layer is not easy to carry out, which disturbs the normal operation of drilling and production operations. Contents of the inventio...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a natural gas anti-corrosion deflector, which solves the problems in the prior art that easily cause blowout and difficult to kill wells in high-pressure oil and gas formations when drilling into abnormally high-pressure oil and gas formations.

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