多级长效泵下缓蚀器的研制与应用  

Development and Application of Corrosion Inhibitor under Multi-stage Long-acting Pumps

作　　者：李永强[1] 袁杰[1] 唐洪涛[1] 崔杰[1] 黄佳博 

机构地区：[1]中石化胜利油田分公司胜利采油厂,山东东营

出　　处：《石油天然气学报》2019年第3期7-11,共5页Journal of Oil and Gas Technology

摘　　要：针对胜坨油田T128断块高温高盐油藏油井井筒腐蚀严重问题,研制了泵下多级长效缓蚀器。优选牺牲阳极复合材料XS3,实现了缓蚀器逐级释放缓蚀剂;研制了固体缓蚀剂,缓蚀率达78.7%,满足缓蚀器多级填料需求。现场应用表明,缓蚀剂溶解速率能够满足地层水腐蚀速率要求,可以有效保护井筒和油井管柱。In this paper,a multi-stage long-acting corrosion inhibitor under the pump was developed in consideration of the problem of severe corrosion of wellbore in the high-temperature and high-salt oil reservoir in Fault Block T128 in Shengtuo Oilfield.The corrosion inhibitor was gradually released by optimal selection of sacrifice anode composite XS3,and the solid corrosion inhibitor was synthesized and the inhibition ratio was as high as 78.7%,which met the requirements of the multi-stage filling of the corrosion inhibitor.Field application shows that the dissolution rate of the corrosion inhibitor can meet the corrosion rate requirement of formation water.It can effectively protect the wellbore and oil well casing string.

关 键 词：高温高盐 腐蚀 泵下缓蚀器 固体缓蚀剂 

分 类 号：TE9[石油与天然气工程—石油机械设备]