摘要
南堡油田奥陶系潜山油气藏埋藏深,温度高,碳酸盐岩含量高,岩性致密,特低孔、特低渗特征明显,且大部分储层的非均质性较强,同时溶洞和裂缝较为发育。优选出了缓速、降滤失、降阻性能好的交联酸和胶凝酸配方,以及具有较好转向功能的自转向酸配方,并引入了缓蚀效果好的高温缓蚀剂,在此基础上提出了多级注入酸压技术。通过现场应用,该套酸压工艺取得了较好的改造效果,沟通了储层远处的天然裂缝,为奥陶系潜山油气藏的开发找到了有效的途径。
Through the analysis of Ordovician system buried mountain reservoir features of Nanpu oilfield,the difficulties of acid fracturing technology are summarized,and the technological methods are developed,which the acid fracturing fluid system is optimized according to the reservoir features.The applications of the acid fracturing fluid system show that the multiple stages injecting acid fracturing technology is the most effective stimulation method in Ordovician system buried mountain reservoir of Nanpu oilfield.
出处
《钻井液与完井液》
CAS
北大核心
2012年第5期74-76,101,共3页
Drilling Fluid & Completion Fluid
关键词
增产措施
酸压
高温
交联酸
胶凝酸
自转向酸
多级注入
奥陶系
Self-diverting acid
Multiple injecting acid fracturing
High temperature
Crosslinked acid
Ordovician system
