储气库注采工艺优化研究与应用

Research and Application on Optimization of Injection Production Process for Underground Gas Storage

高继峰 银永明 公明明 孙娟 吴佳伟

GAO Jifeng YIN Yongming GONG Mingming SUN Juan WU Jiawei

中国石化中原石油工程设计有限公司天然气技术中心, 河南 郑州 450000

Natural Gas Technology Center, Petroleum Engineering Zhongyuan Co. Ltd., SINOPEC, Zhengzhou, Henan 450000, China

储气库建设对供气管网安全、平衡供气具有重要战略意义，在天然气调峰中起到举足轻重的作用。目前，储气库工艺存在压缩机组中体放空对空排放安全隐患和增压气润滑油超标、采出气轻烃超标、甘醇再生系统尾气对空排放、集输管线积盐腐蚀等问题。针对中体放空，设置放空引射装置，将排放物引至火炬集中排放，避免可燃气体站内聚集的隐患；针对润滑油含量超标(体积比为16×10)，设置高压除油器，降低增压气油含量，消除二次污染；通过对脱水装置吸收塔和再生装置优化，避免甘醇起泡失活；通过对甘醇再生气系统改造，实现再生气回收利用，降低环境污染，节约能耗。

The construction of gas storage is of great strategic significance to the safe and balanced gas supply of the gas supply pipeline network, and plays a pivotal role in natural gas peak shaving. At present, there are some problems in the process of gas storage, such as the potential safety hazard of compressor unit venting to air emission, the exceeding of booster gas lubricating oil, the exceeding of light hydrocarbon of produced gas, emission of tail gas from glycol regeneration system to air, salt accumulation corrosion of gathering and transmission pipeline and so on. For the venting of the middle body, a venting ejection device is set to lead the emissions to the flare for centralized discharge, avoiding the hidden dangers of the accumulation of combustible gas in the station; For excessive lubricating oil content (volume ratio of 16×10), set high-pressure degreaser to reduce the lubricating oil content of booster gas, and eliminate secondary pollution; by optimizing the absorption tower and regeneration device of the dehydration unit the foaming and deactivation of glycol is avoided; through the modification of the glycol regeneration gas system, the regeneration gas can be recycled, reducing environmental pollution and saving energy consumption.

10.11885/j.issn.1674-5086.2022.05.17.03