摘要
对砂岩储层酸压需要具备的可能条件进行了概括分析,认为对砂岩储层中浅层井、注水井、储层裂缝发育井及处于构造轴附近的井酸压成功的可能性较大,并对其原理进行了分析。对砂岩储层酸压的工艺和酸液体系的应用进行了概括,其发展特点为酸液体系由单一的盐酸、氢氟酸体系向醋酸、氟硼酸、硝酸等复合酸液体系发展,其工艺由普通酸压向高导流裂缝酸压发展,并首次将平衡酸压闭合酸化工艺技术用于砂岩储层酸压中,并获得成功。最后,给出了砂岩储层酸压的现场应用实例。
The necessary conditions of sandstone reservoir acidization were analyzed.It was considered that the acid fracturing was possibly for acid fracturing in shallow wells, water injection wells, wells with fracture growth and for wells near the tectonic axis, and its principle was analyzed.The application s of acid fracturing technique and acidizing fluid system were described.Its development characters changed from unique hydrochloric, hydrofluoric systems to composite acidizing fluid of acetic, fluo-boric acid, its technique was developed from common acid fracturing to high diverting acid fracturing.The process of equilibrium and closed acid fracturing was firstly used for sandstone reservoir fracturing.It is successful.The field application examples are provided
出处
《石油天然气学报》
CAS
CSCD
北大核心
2008年第1期338-340,343,共4页
Journal of Oil and Gas Technology
关键词
砂岩储层
酸液体系
酸压工艺
裂缝
导流能力
sandstone reservoir
acidizing fluid system
acid fracturing technique
fracture
diverting capacity
