自适应粘弹颗粒调剖体系室内实验研究及应用  

Laboratory experimental research and application of adaptive viscoelastic particle profile control system

作　　者：张延旭 左清泉 张艳辉 朱立国 刘浩洋 ZHANG Yan-xu;ZUO Qing-quan;ZHANG Yan-hui;ZHU Li-guo;LIU Hao-yang(Tianjin Branch of CNOOC(China)Co.,Ltd.,Tianjin 300450,China;CNOOC Ener Tech-Drilling&Production Co.,Tianjin 300450,China)

机构地区：[1]中海石油(中国)有限公司天津分公司,天津300450 [2]中海油能源发展股份有限公司工程技术分公司,天津300450

出　　处：《精细与专用化学品》2023年第6期18-20,26,共4页Fine and Specialty Chemicals

摘　　要：针对海上油田常规的调剖措施应用过程中存在注水井压力高、调剖体系注入压力上升快和注入困难的问题,研究了一种自适应粘弹颗粒体系,并通过室内实验,评价了该体系的微观形态、膨胀性能、热稳定性能和封堵性能。结果表明:自适应粘弹颗粒体系粒径为1.8~2.2μm;自聚集的粒径可以达到20μm;比聚合物具有更好的耐温性能;不同的岩心渗透率条件下,封堵率超过85%。现场应用结果表明,自适应粘弹颗粒体系具有良好的增油降水效果。In view of the problems of high pressure in injection wells,rapid increase of injection pressure in profile control system and difficult injection in the application of conventional profile control measures in offshore oil fields,an adaptive viscoelastic particle system was studied.Through laboratory experiments,the micromorphology,expansion performance,thermal stability performance and plugging performance of the system were evaluated.The experimental results showed that the size of the adaptive viscoelastic particle system was mainly between 1.8and 2.2μm.The self-aggregated particle size can reach 20μm.Better temperature resistance than polymer.Under different core permeability conditions,the plugging rate was more than 85%.Field application showed that the adaptive viscoelastic particle system has a good effect on oil increase and precipitation.

关 键 词：自适应粘弹颗粒 调剖剂 封堵率 

分 类 号：TE357[石油与天然气工程—油气田开发工程] TQ427[化学工程]