Pressure relief guide device for oil well wellhead

Abstract

The invention relates to a wellhead pressure relief and diversion device for an oil well. It mainly solves the problems of slow pressure relief at the wellhead of the existing oil well and long time for pressure relief. It is characterized in that: the clamp seat (1) is connected to the folding tube A (7) through a three-width rotary joint C (15), and the other end of the folding tube A (7) is connected to the three-width rotary joint A (10) , the folded tube B (16) is connected to the three-spoke rotary joint A (10), and the other end of the folded tube B (16) is connected to the deflection adjustment ball (5) through the three-spread rotary joint B (14), so The deviation adjustment ball (5) is placed in the deviation adjustment clamp seat (2), and the deviation adjustment ball (5) and the deviation adjustment clamp seat (2) are matched through a spherical surface; the three-spoke rotary joint A (10) is connected with a pressure taking device (11). The wellhead pressure relief and diversion device of the oil well is connected through the oil casing valve to realize the purpose of rapid discharge of the casing pressure.

Description

technical field [0001] The invention relates to the field of oil fields, in particular to an oil well head pressure relief and diversion device. Background technique [0002] In the process of oil field production, when various wellheads are being constructed, it is necessary to release the bottom hole pressure, especially when the casing pressure is high, it will take a long time to discharge the gas into the oil return pipeline through the wellhead constant pressure release valve. affect the construction progress. At present, the slow release of downhole casing pressure mainly comes from two aspects: 1. The constant pressure release diameter is small: the wellhead oil casing process is mainly connected through the constant pressure release valve, and the constant pressure release valve passes through the spring and thread during normal production. Press fit to realize the flow of external discharge into oil return at a fixed pressure. Since most of the passages are below...

AI Technical Summary

Problems solved by technology

Since most of the channels are below 30 mm, the passing capacity is poor, and due to the action of the spring, the opening of the channel is limited, causing the pressure to pass slowly

2. Blockage of the constant pressure release channel: During normal production, the constant pressure release channel mainly passes through gas, and the flow rate is small

In the long-term production process, due to the fouling and waxing of the channel, the passage is narrow, the fluid passing capacity becomes poor, and the pressure release time is prolonged.

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