蒸汽凝析液对地层的伤害研究及对策  

Study and countermeasure on formation damage by steam condensed liquid.

作　　者：郭省学[1] 曹嫣镔[1] 唐培忠[1] 祝瑞华[1] 孟秋玉[1] 

机构地区：[1]胜利油田有限公司采油工艺研究院

出　　处：《油气地质与采收率》2001年第4期74-75,共2页Petroleum Geology and Recovery Efficiency

摘　　要：注蒸汽采油时 ,蒸汽凝析液的强碱性会对油层造成较大的伤害。初步探讨了高温条件下蒸汽凝析液对地层的伤害机理。通过室内研究 ,筛选出JJ- 8和JJ - 9降碱剂 ,并对其注入工艺及腐蚀性进行了研究和测试。室内研究表明 ,JJ- 8和JJ- 9降碱剂可有效降低蒸汽凝析液的碱度 ,减轻蒸汽凝析液对地层的伤害程度 ,提高注汽效率。降碱剂在单Strong alkalinity of steam?condensed liquid will damage formation largely by steam?assisted recovery. The damage mechanism of the steam?condensed liquid to the formation at high temperature is discussed preliminarily. JJ?8 and JJ?9 alkalinity?reducing agent are screened by laboratory study, and its injection technique and corrosivity are studied and tested. Laboratory research shows that the JJ?8 and JJ?9 agent can reduce the alkalinity of the liquid and degree of formation damage made by the liquid, and raise steam injection efficiency. The application of the agent on super heavy crude oil block in the east of Shan 6 achieved good effect.

关 键 词：地层伤害 稠油油藏 蒸汽凝析液 降碱剂 对策 

分 类 号：TE258[石油与天然气工程—油气井工程]