酸液滤失性评价及控滤对策  

Acidizing Fluid Filtration Evaluation and Filtration Control Strategy

作　　者：卫玮[1] 颜晋川[1] 刘斌[1] 唐灵[2] 杨琳[3] 

机构地区：[1]中国石化西南油气分公司工程技术研究院 [2]中国石化西南油气分公司勘探开发研究院 [3]川庆钻探工程有限公司地质勘探开发研究院

出　　处：《钻井液与完井液》2011年第3期66-68,96,共3页Drilling Fluid & Completion Fluid

摘　　要：酸液滤失机理和控滤方法是酸化压裂改造中面临的重要课题。通过开展酸液滤失性评价实验,在实验结果的基础上进一步认识酸液滤失特征,分析总结出影响酸液滤失的主要因素是天然缝洞的存在及酸蚀蚓孔的生成,酸液性质、酸浓度以及注酸速度对滤失均有明显影响。根据上述影响因素提出了选择降滤失能力的酸液体系、适当降低酸浓度、优化阶段施工排量、采用交替注入、暂堵降滤工艺等针对性的控滤对策。The acid filtration mechanism and control are important issues in acid fracturing stimulation.The acid filtration evaluation experiments are carried out and the results show that the dominant factors of impacting acid filtration are the fractures pores and acid wormhole,so as the acid characteristics concentration and acid pumping rate significantly affects the acid filtration.Based on the factors,an acid system is optimized that can decrease the acid filtration,reduce the acid concentration,optimize the phases of pumping rate,inject alternately and plug temporarily.

关 键 词：酸化压裂 碳酸盐岩 酸液滤失 实验评价 控滤 

分 类 号：TE357.1[石油与天然气工程—油气田开发工程]