鄂尔多斯盆地伊陕斜坡负压气井微泡压井液冲砂研究与应用  

Research and application of well killing and sand flushing of microbubble liquid for negative pressure gas wells in Yishan slope of Ordos Basin

作　　者：张建忠 刘佳丽 高丽蓉 马中国 王依诚 王波 张明 Zhang Jianzhong;Liu Jiali;Gao Lirong;Ma Zhongguo;Wang Yicheng;Wang Bo;Zhang Ming(No.4 Gas Production Plant of Shanxi Yanchang Gas Field,Shaanxi Yanchang Petroleum(Group)Co.,Ltd.,Yan′an 716000,China;Xi′an Shiyou University,Xi′an 710065,China;Natural Gas Research Institute of Shanxi Yanchang Petroleum(Group)Co.,Ltd.,Xi′an 710065,China)

机构地区：[1]陕西延长石油(集团)有限责任公司延长气田采气四厂,陕西延安716000 [2]西安石油大学,陕西西安710065 [3]陕西延长石油(集团)有限责任公司天然气研究院分公司,陕西西安710065

出　　处：《能源与环保》2024年第12期129-133,共5页CHINA ENERGY AND ENVIRONMENTAL PROTECTION

基　　金：陕西省创新能力支撑计划(2024ZC-KJXX-129)。

摘　　要：针对鄂尔多斯盆地伊陕斜坡负压气井的需求,研究出一套氮气微泡压井循环液体系,该体系基液由特制发泡剂、活性剂、复合稳泡剂等处理剂配制而成,该体系能与地层水在不同比例条件下具有良好的配伍性及抗污染性能、稳定性性能,体系具有良好的流变性能、承压封堵性能,污染渗透恢复率最低为94.76%,对岩心伤害率最高仅为5.24%,通过现场20口气井应用发现压井成功率达到100%,通过经济核算发现成本节约率可达51.70%,该体系具有良好的压井冲砂性能及降本增效的作用,可以在油气开采中大规模推广应用。A set of nitrogen microbubble well killing circulating fluid system has been developed to meet the needs of negative pressure gas wells in Yishan Slope of Ordos Basin.The base liquid of the system was formulated by special foaming agent,surfactant,compound foam stabilizer and other treatment agents,which has good compatibility,anti-pollution and stability with formation water under different proportion conditions,the system has good rheological and pressure sealing performances,with a lowest pollution infiltration recovery rate of 94.76%for contaminated permeability and a highest damage rate of only 5.24%for cores.It was found that the success rate of well killing reached 100%in the application of 20 gas wells on site.Through economic accounting,it was found that the cost savings rate can reach 51.70%.This system has good performance in well killing and sand flushing,as well as cost reduction and efficiency enhancement,and can be widely popularized and applied in oil and gas production.

关 键 词：负压井 微泡液 加注泵 压井 冲砂 

分 类 号：TE375[石油与天然气工程—油气田开发工程]