氧化型深部酸化工艺在西峰油田的应用  

Application of oxidized deep acidizing technology in Xifeng Oilfield

作　　者：郭庆[1] 郭艳萍 蒋宏[3] 白良杰[4] 陈松 李亚洲[5] 

机构地区：[1]西安石油大学石油工程学院,陕西西安710065 [2]川庆钻探工程公司井下技术作业公司,甘肃庆阳745100 [3]塔里木油田公司开发事业部,新疆库尔勒841000 [4]冀东油田公司勘探开发工程监督中心,河北唐山063200 [5]长庆油田分公司第二采油厂,甘肃庆阳745100

出　　处：《断块油气田》2009年第3期105-106,109,共3页Fault-Block Oil & Gas Field

摘　　要：西峰油田长8低渗储层欠注水井较多,注水效果不好,普通酸液的增注效果不理想,不利于油田长期稳产。针对注水井初投压力高,正常注水后压力上升快,地层吸水能力下降,注入困难,能耗大的问题,通过岩心溶蚀实验,确定了该油田储层主体的氧化型深部酸化工艺。西峰油田13口注水井的现场试验结果表明,使用氧化型深部酸化工艺后,试验井组注入量与吸水指数比措施前大幅度提高,有效解决了油藏欠注问题,为西峰油田油水井增产增注提供了方向。There are many less water injection wells in Chang 8 reservoir with low permeability in Xifeng Oilfield. The water injection effect is not good and the increasing injection effect by acid liquid is not ideal, which is not favorable for the long-term stable production. Aimed at the problems as the high initial pressure of injection well, the pressure rising rapidly after normal water injection, the water absorption capacity declining, the injection difficulties and the big energy consumption, we study and determine the main reservoir oxidized deep acidizing technology after the core corrosion experiment. The field test for thirteen wells show that the injected volume and water absorption index are substantially improved, effectively solving the above problem, which can provide the direction for increasing production and injection in Xifeng Oilfield.

关 键 词：低渗储层 增注 酸化体系 效果评价 西峰油田 

分 类 号：TE357.2[石油与天然气工程—油气田开发工程]