High-inclination variable-aperture foam blocking device and defoaming equipment for oil and gas fields

Abstract

The invention discloses a high-inclination variable-aperture foam blocking device and defoaming equipment for oil and gas fields. The high-inclination variable-aperture foam blocking device comprises a foam blocking component (1) and an outer pipe body (3) which are arranged in a sleeved manner inside and outside, wherein the outer pipe body (3) is in a horizontal state, a plurality of communicating holes (4) are formed in the foam blocking component (1), the communicating holes (4) are communicated with the two ends of the foam blocking component (1) along the axis direction of the outer pipe body (3), and the apertures of the communicating holes (4) are gradually reduced along the direction from bottom to top. According to the high-inclination variable-aperture foam blocking device, foam brought out by a gas well is fully mixed with a defoaming agent through high-inclination variable aperture, and the defoaming effect is better.

Description

technical field [0001] The invention relates to the technical field of oil production equipment, in particular to a large-slope variable-aperture foam-resistance device, and a defoamer for oil and gas fields containing the large-slope variable-aperture foam-resistance device. Background technique [0002] In the production process of oil and gas fields, water will be released to varying degrees in the middle and late stages of gas well development, resulting in a decrease in gas well production, and in severe cases, the gas well will be crushed to death. In order to eliminate the accumulation of fluid at the bottom of the well, the commonly used solution on site is the foam drainage gas recovery technology. The hidden danger brought by this technology is that if the defoaming is not complete, the foam will enter the metering tank or compressor and damage the equipment. The defoaming method currently used in the field is to continuously titrate the defoaming agent into the oi...

AI Technical Summary

Problems solved by technology

The hidden danger brought by this technology is that if the defoaming is not complete, the foam will enter the metering tank or compressor and damage the equipment

The defoaming method currently used in the field is to continuously titrate the defoaming agent into the oil pipe at the cork of the pressure gauge of the gas-gathering valve group in the gas-gathering station, such as figure 1 As shown, since the oil pipe is a gas-liquid two-phase flow, the lower part is liquid, and the upper part is foam and gas. The continuously titrated defoamer can only eliminate part of the foam and then enter the lower liquid, resulting in an unsatisfactory defoaming effect.

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