Oil and gas pipeline non-stop transmission on-line desanding device

Abstract

The invention discloses an oil and gas pipeline non-stop transmission on-line desanding device and aims to overcome the defects that in the prior art, installation is complicated, and the separation effect is poor. The desanding device comprises a desanding device inlet, a desanding device outlet, a desanding device cylinder, a columnar cylinder, a helical blade, rotation-stopping fan-shaped plates, sand discharging outlets and full-bore ball valves, wherein the columnar cylinder is in the desanding device cylinder, the columnar cylinder is coaxial to the desanding device cylinder body, the helical blade is located in an annular space between the desanding device cylinder and the columnar cylinder to form a helical flow channel, the rotation-stopping fan-shaped plates are in the desandingdevice cylinder, the sand discharging outlets are formed in the lower side of the desanding device cylinder in a row, and the sand discharging outlets run through the full-bore ball valves and sand inlets in sequence to be communicated with a sand storage chamber. By means of the oil and gas pipeline non-stop transmission on-line desanding device, the installation way of the desanding device is identical to that of a common valve, the desanding device can be horizontally or vertically installed and occupies little space, auxiliary facilities are not needed, the separation efficiency is high, solid impurities in oil and gas can be efficiently separated out, and normal pipeline transportation is not affected in the sand cleaning process.

Description

technical field [0001] The invention belongs to the technical field of centrifugal separation and flow guarantee, and relates to an on-line desanding device for oil and gas pipelines without transmission. Background technique [0002] In the process of oil and gas extraction, it is inevitable that there will be solid impurities such as mud and sand, especially with the application of new technologies such as hydraulic fracturing and polymer flooding, this phenomenon has become increasingly serious. [0003] The existence of solid impurities will adversely affect the normal operation of downstream oil and gas treatment facilities such as three-phase separators, and cause strong wear and tear on the inner anti-corrosion layer on the inner wall of the pipeline. The normal operation of pumps and compressors in power facilities is highly sensitive to solid impurities. Advanced solid-liquid and gas-solid separation facilities are of great significance. At present, the main method...

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a new on-line desanding device technology for non-stop transmission of oil and gas pipelines in view of the shortcomings of the prior art such as complicated installation and poor separation effect. Or installed vertically, does not take up extra space, does not require auxiliary facilities, and has high separation efficiency. It can efficiently separate solid impurities in oil and gas, and at the same time, the process of cleaning sand does not affect the normal transportation of pipelines.

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