Drainage system and drainage method

Abstract

The invention discloses a drainage system and a drainage method and belongs to the field of oil-gas production and development. The drainage system comprises a gas production tree, a first drainage pipeline, a second drainage pipeline and a third drainage pipeline vertically communicating to the gas production tree successively, and a sludge collecting part. The second drainage pipeline is vertical to the ground. The sludge collecting part is connected to the lower end of the second drainage pipeline for collecting solid impurities discharged by the gas production tree. The drainage system guarantees smooth operation of drainage work by arranging the gas production tree, the first drainage pipeline, the second drainage pipeline and the third drainage pipeline. By arranging the sludge collecting part and connecting the sludge collecting part to the lower end of the second drainage pipeline, the solid impurities in produced water are collected, and a condition that normal production of acoal-bed gas well is affected as drainage pipelines are blocked is avoided.

Description

technical field [0001] The invention relates to the field of oil and gas production and development, in particular to a drainage system and method. Background technique [0002] During the production and development of coalbed methane, solid impurities such as clay and coal powder often appear in the wellhead drainage pipeline. At a certain temperature, the solid impurities will form blockages in the drainage pipeline, blocking the row of pipelines, and affecting the normal operation of coalbed methane wells. Production. [0003] Therefore, it is very necessary to provide a drainage system capable of avoiding blockage of the drainage pipeline. Contents of the invention [0004] Embodiments of the present invention provide a drainage system and method, which can solve the above technical problems. The specific technical scheme is as follows: [0005] On the one hand, an embodiment of the present invention provides a drainage system, the drainage system comprising: a gas ...

AI Technical Summary

Problems solved by technology

[0002] During the production and development of coalbed methane, solid impurities such as clay and coal powder often appear in the wellhead drainage pipeline. At a certain temperature, the solid impurities will form blockages in the drainage pipeline, blocking the row of pipelines, and affecting the normal operation of coalbed methane wells. Production

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