稠化酸酸压技术室内实验研究

Laboratory experiment on acid fracturing technology with viscous acid

海拉尔油田布达特群储层压裂裂缝较窄,缝高不易控制,压裂成功率较低。为了解决在储层酸压过程中存在的问题,研究出一种新型的稠化酸酸液体系。该稠化酸酸液耐温性、抗滤失性和缓速性都较强。通过储层敏感性分析和酸液性能评价,确定了酸压工艺。数值模拟表明,该工艺具有较好的增产效果。

There are some problems for fracturing, such as narrow induced fracture, uncontrollable fracture height and low success rate in Budate Group reservoir of Hailaer Oilfield. In order to solve the problems above in the process of acid fracturing, we research a new acidizing fluid system with viscous acid. The acidizing fluid with viscous acid has the temperature tolerance, filtration resistance and retardation properties. The acid fracturing technology has been identified by the analysis of reservoir sensitivity and the evaluation of acidizing fluid performance. The technology has a good incremental effect through numerical simulation.