机构地区: 中国石油天然气集团公司
出 处: 《钻井液与完井液》 1998年第3期17-20,共4页
摘 要: 在深入研究储层特征、回注污水及前期酸化等对储层伤害机理的基础上,结合室内试验结果,考虑了一些室内试验无法模拟的因素,对酸化工作液进行了重点优选.采用有机溶剂前冲洗地层,再用有机缓速酸酸化,满足了深度酸化和重复酸化过程中保护储层的要求,初步解决了桩西油田低渗透地层欠注井重复酸化增注的难题。先期使用酸化工作液试验的两口井均获得了显著的增注效果。 The acidizing fluid for Zhuang 104 Block was optimized based on the analysis to reservoir characteristics, formation damage mechanism by reinjected sewage and preliminary acidizing. It is used for reservoir protection in reacidizing and deep acidizing. Hydrocarbon solvent and retarded acid are used for pre-flush fluid and treatment acid respectively. The method is suitable for low permeable formation in Zhuangxi field. and field tests in 2 wells were successful.
领 域: [石油与天然气工程]