Underground pipe column of gas well

Abstract

The invention relates to the field of natural gas engineering equipment and in particular relates to an underground pipe column of a high sulfur-containing gas well. The underground pipe column comprises a gas pipeline, a solid impurity removing device and a plurality of gas filtering devices; a gas inlet and a gas outlet are formed in the two ends of the gas pipeline, respectively; the solid impurity removing device is fixedly mounted in the gas pipeline and at the end close to the gas inlet; a plurality of gas filtering devices are evenly and fixedly mounted in the gas pipeline orderly from the end close to the solid impurity removing device and the end close to the gas outlet; a gap is formed between every two adjacent gas filtering device; a plurality of gas channels are evenly distributed on the side surface of the gas pipeline; the gas channels are used for communicating the adjacent gaps. The underground pipe column of the gas well has the beneficial effects that the impurity removing cleaning treatment is performed in the source of the gas, the route of gas corroding the pipeline is reduced, and meanwhile, the underground space is utilized thoroughly, the requirement on the corrosion resistance of the material of the ground pipeline is reduced, the service life of the underground and ground pipelines is prolonged and the economic cost is saved.

Description

technical field [0001] The invention relates to a downhole pipe string of a gas well in the field of natural gas engineering equipment, in particular to a downhole pipe string of a high-sulfur gas well. Background technique [0002] At present, during the development process of gas reservoirs, sand or solid impurities will be produced to cause pipeline blockage. In addition, the combination of natural gas and water will easily form ice blockage (the so-called ice blockage refers to natural gas hydrate). The hydrogen sulfide contained in natural gas combines with water. Corrosion-prone equipment even leaks causing casualties and environmental pollution. The current traditional treatment method is to concentrate the tasks of water removal and sulfur removal on the ground, while ignoring the treatment at the source underground. As a result, the pipes through which the gas flows are prone to clogging and corrosion throughout the development process. Moreover, the requirements ...

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a downhole pipe string of a gas well, which overcomes the defects of severe corrosion, easy blockage, high cost, and large ground space occupation in current gas reservoir development

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