苏75区块位于苏里格气田的西区北部,共建有3座集气站、2条集气支线,集气站仅对天然气进行初步的气液分离,因此管道内会存有一定的积液,随着运行时间的延长,积液会越来越多,以致影响管线安全运行。为了改善管线的运行状况,提高输送能力,减少能耗损失,因此这两条集气支线需要进行清管作业。本文通过对清管作业技术进行了介绍,并对苏75区块的应用情况进行了总结,这些经验和成果可以对其它天然气管道的清管作业提供借鉴经验,有着积极的现实意义。 Su-75 Block is located in the northern part of the western part of the Sulige Gas Field. Three gas gathering stations and two gas-gathering branch lines have been built. The gas gathering station only conducts preliminary gas-liquid separation of natural gas. Therefore, there is a certain product Liquid, with the running time, fluid will be more and more, so affect the safe operation of the pipeline. In order to improve the operation status of the pipeline, increase the conveying capacity and reduce the loss of energy consumption, the two gas gathering branches need pigging operations. This paper introduces the pigging operation technology and sums up the application of the Su-75 block. These experiences and achievements can provide references for the pigging operation of other natural gas pipelines, which has a positive and practical significance.