摘要
砂岩酸化目的是消除近井地带地层污染,从而恢复产能,酸液配方很大程度上决定了酸化措施清除地层污染的有效性。本文通过岩心溶蚀实验、添加剂评价实验优选雅克拉气田白垩系储层解堵酸液体系及添加剂,并通过岩心酸化流动实验测试岩心渗透率对注酸的响应,评价酸液体系消除污染的效果。该配方在Y3井酸化应用取得了明显效果。
The purpose of sandstone acidizing is to eliminate the formation pollution near the well,so as to restore the production capacity.The formula of acidizing fluid largely determines the effectiveness of acidizing measures to remove the formation pollution.In this paper,the core dissolution experiment and additive evaluation experiment were used to optimize the plugging removing acid system and additives of Cretaceous reservoir in Yakla gas field,and the response of core permeability to acid injection was tested through the core acidizing flow experiment to evaluate the effect of acid system on eliminating the pollution.The formula has been applied in the acidizing of well Y3,and obvious effect has been obtained.
作者
应海玲
YING Hai-ling(Petroleum Engineering Technology Research Institute of Sinopec Northwest Oilfield Company,Xinjiang Urumqi 830011,China)
出处
《辽宁化工》
CAS
2020年第3期275-278,共4页
Liaoning Chemical Industry
关键词
砂岩酸化
雅克拉气田
酸液体系
解堵
sandstone acidification
Yakela gas field
acid system
plug removal
