高温高盐油藏微乳酸体系酸化性能研究  

Study on application of micro-emulsion acid in high temperature and high salinity reservoirs

作　　者：赵根[1] 赵仁保[2] 李贻勇[3] 郭娜[4] 

机构地区：[1]中国石化集团国际石油勘探开发公司,北京100083 [2]中国石油大学(北京)石油工程学院,北京102249 [3]辽河油田分公司沈阳采油厂,辽宁沈阳110316 [4]中原油田分公司采油五厂,河南濮阳457001

出　　处：《内蒙古石油化工》2012年第4期4-6,共3页Inner Mongolia Petrochemical Industry

摘　　要：通过正交实验设计,优选出了适用于高温高盐油藏的微乳酸酸化体系。该体系振动时电导率下降,静置时电导率上升,表现为双连续结构;在高温高盐条件下具有良好的稳定性;沿程损耗量低,产出液pH值小;溶蚀速率低,溶蚀时间持续较长。长岩心酸化实验结果表明:微乳酸溶液酸化后,岩心孔、渗参数得到改善,深部酸化效果明显。The acidification system of micro-emulsified acid that is applicable to high temperature and high salinity reservoirs was optimized through orthogonal experimental design.The conductivity of micro-emulsified acid decreases as being oscillating,increases as being standing.The oil phase and the water phase of the micro-emulsified acid system show continuous structure.The micro-emulsified acid system is stable at high temperature and high salinity conditions.The loss quantity of the system is low.And pH value of producing fluid is low.Comparing to mud acid,the dissolution velocity of the micro-emulsified acid system is low but lasts longer.After acidized by the micro-emulsified acid system,the porosity and the permeability of long core are all improved,especially in core deep.

关 键 词：微乳酸 酸化 高温 高盐 

分 类 号：TE3[石油与天然气工程—油气田开发工程]