渤海A油田储层损害机理及钻完井液保护技术研究  

Study on Reservoir Damage Mechanism And Drilling and Completion Fluid Protection Technology in BOHAI A Oilfield

作　　者：张宇飞 陈缘博 王超群 燕超 Zhang Yufei;Chen Yuanbo;Wang Chaoqun;Yan Chao(Oilfield Chemistry Research Institute COSL,Langfang 065201,China)

机构地区：[1]中海油田服务有限公司油田化学研究院,河北廊坊065201

出　　处：《广东化工》2022年第14期79-82,共4页Guangdong Chemical Industry

摘　　要：本文针对渤海A油田储层岩性、黏土矿物含量的分析研究以及储层敏感性进行了评价分析,并针对评价结果分析了该油田潜在的储层伤害情况。随后开展了钻完井液体系优化及储层保护相关研究,确定了最终的作业体系。研究结果表明,优选钻井液暂堵剂后,岩心切片0.5 cm后渗透率恢复值可达96.27%;使用清洁盐水、隐形酸完井液和稠油储层完井液进行储层保护实验时,隐形酸完井液的效果最好,可达96.35%;使用钻井液与隐形酸完井液系列流体污染储层岩心时,渗透率恢复值可达93.23%,说明该套钻完井液体系具有良好的储层保护效果。This paper evaluated and analyzed the reservoir lithology,clay mineral content and reservoir sensitivity of BOHAI A oilfield,and analyzed the potential reservoir damage of the oilfield according to the evaluation results.Besides research on fluid system optimization and reservoir protection was carried out to determine the final system.The results showed that the permeability recovery value can reach 96.27 % after 0.5 cm of core slice after optimization of drilling fluid temporary plugging agent.When clean brine,stealthic acid completion fluid and heavy oil completion fluid were respectively used in reservoir protection experiment,the stealthic acid completion fluid had the best effect,reaching 96.35 %.The permeability recovery value can reach 93.23 % when the reservoir core was polluted by drilling fluid and cloacy-acid completion fluid series,indicating that the casing completion fluid system has a good reservoir protection effect.

关 键 词：渤海油田 敏感性评价 储层保护 完井液 渗透率恢复值 

分 类 号：TE258[石油与天然气工程—油气井工程]