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作 者:季伟[1] 赵丽丽[1] 冯维[1] 杨全蔚 马超[1]
机构地区:[1]中国石油长庆油田分公司第二采气厂,陕西榆林719000
出 处:《石油化工应用》2016年第7期70-73,共4页Petrochemical Industry Application
摘 要:随着气藏开发过程的进行,地层压力逐渐下降,气体流速降低无法满足最小携液流量时,常出现气井井筒积液。泡沫排水采气工艺具有操作方便、经济性好、成功率高的特点。针对子洲-米脂气田地质和流体具有储层物性差、气井水质矿化度高、生产工艺含醇量高的特点,泡沫排水采气工艺成功实施的关键在于选择合适的泡排剂。通过对气井气质、水质的分析,选择目前国内排水效果较好的几种泡排剂HY-3g、HY-3k、ZT-5B、ZT-11c、CT5-2作为性能评价研究对象,进行室内实验和现场试验研究,最终确定HY-3k型泡排剂,在不同甲醇含量下具有起泡高度高、携液速率快的特点,同时具有较强的抗高矿化度能力。现场试验表明,该泡排剂对增产气量和提高气井的采气时率都具有明显效果。With the development of gas process,the formation pressure decreases gradually,and the gas flow rate can not meet the minimum liquid carrying flow rate.Foam drainage gas recovery process is convenient to operated,economical,easy to success.However,in Zizhou-Mizhi gas field,with poor reservoir physical property,higher degree of mineralization in water,high alcohol content, it is needed to choose suitable foaming agent.By the analysis of gas quality and water quality,HY-3g,HY-3k,ZT-5B,ZT-11 c,CT5-2 are set as the research object of performance evaluation.Laboratory and field experimental are carried out to ultimately determine HY-3k foaming agent is suitable under different alcohol content,and the foaming height and carrying liquid rate are higher, meanwhile,it has strong ability against high mineral degree.The field test shows that the foaming agent has a significant effect on increasing the gas recovery rate.
分 类 号:TE377[石油与天然气工程—油气田开发工程]
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