碳酸盐岩油藏用新型乳化酸酸岩反应研究  

Research on Acidic Rock Reaction of a New Type of Emulsified Acid in Tahe Carbonate Reservoir

作　　者：张磊[1,2] 赵凤兰[2] 舒俊峰[3] 陈勇[3] 徐宏明[1,2] 刘群[3] 

机构地区：[1]中国石油大学(北京)石油工程学院 [2]中国石油大学(北京)提高采收率研究院 [3]中石化中原油田采油四厂

出　　处：《钻井液与完井液》2013年第1期63-65,68,共4页Drilling Fluid & Completion Fluid

基　　金：国家973专题"碳酸盐岩缝洞型油藏提高采收率基础研究--提高采收率方法研究及优化"(2011CB201006);国家重大专项"缝洞型碳酸盐岩油藏提高开发效果技术--补充能量注入体系优选实验研究"(2011ZX05014-003)

摘　　要：塔河油田碳酸盐岩油藏温度为125～128℃,由于乳化剂性能不稳定,常用的乳化酸在此条件下失效。选用二乙醇胺、马来酸酐、环氧丙烷为原材料合成了1种新型的乳化剂。将该乳化剂配制成乳化酸后进行酸岩反应动力学实验以评价酸液性能。实验结果表明:120℃下的反应动力学方程为J=1.069×10-6.C1.119;变温下的反应动力学方程为J=2.1×10-4exp(-9805.6/RT).C1.119;120℃下氢离子的传质系数为7.1×10-6cm2/s;氢离子传质系数与温度的关系为De=2.25E-11T2-1.1E-8T+1.56E-6。自制的乳化酸的缓速性能良好,能满足塔河油田油田酸化压裂施工的要求。The temperature of Tahe carbonate reservoir is 125-128℃,the common used emulsified acid is not stable at this temperature.In this paper,to deal with this problem,a high temperature emulsifier is developed by diethanol amine,maleic anhydride and epoxy propane,which is mixed with acid forming emulsified acidto carry out kinetics experiment of acidic rock reaction.The experimental results show that when the temperature is 120 ℃,the reaction kinetics equation is J=1.069×10-6.C 1.119,and the mass transfer coefficient of hydrogen ion was 7.1×10-6 cm 2 s-1,while in different temperatures,the reactionkinetics equation is J=2.1×10-4 exp(-9805.6/RT).C 1.119,as well as the relationship of the mass transfer coefficient of hydrogenion and temperature is D e =2.25E-11T 2-1.1E-8T+1.56E-6,which the retard performance of homemade emulsified acid is good enough to meet the construction requirement of acid fracturing in Tahe oilfield.

关 键 词：增产措施 酸液 乳化酸 乳化剂 酸岩反应速率 传质系数 

分 类 号：TE357.12[石油与天然气工程—油气田开发工程]