摘要
缝洞型油藏属于以溶洞、溶蚀孔隙、裂缝为主要储集空间的底水油藏。在开发过程中,因储层裂缝发育程度高、底水易沿高渗透裂缝通道窜进而造成油井快速水淹。塔河油田在不动管柱的施工条件下,将液态堵剂注入水窜通道进行封堵,释放水窜屏蔽剩余油,达到治水的目的。同时,深化油藏认识和基础资料分析,建立了“六项基础”分析法确定堵水潜力,研发淀粉胶和高温冻胶2种药剂,形成一套针对缝洞型油藏的不动管柱堵水技术体系,在现场实施13井次,有效率为61.54%,增油1.7万t。
Fracture-cavity reservoirs are bottom-water reservoirs with dissolved caves,dissolved pores,and fractures as the main storage space.In Tahe oilfield,the liquid plugging agent was injected into the water channeling channel to seal off the water channeling and release the remaining oil,so as to achieve the purpose of water control.At the same time,the reservoir knowledge and basic data analysis were deepened.The“six basis”analysis method was established to determine the water plugging potential,starch glue and high temperature gel were developed,and a set of water plugging technology system of the non-moving string was formed for fracture-cavity reservoir.This system was implemented on site for 13 Wells,with an effective rate of 61.54%and an oil increase of 17000 tons.
作者
侯献海
HOU Xianhai(Northwest Sub.Corporation,SINOPEC,Luntai 841604,China)
出处
《北京石油化工学院学报》
2021年第3期40-43,49,共5页
Journal of Beijing Institute of Petrochemical Technology
基金
国家科技重大专项(2016ZX05053)。
关键词
缝洞型油藏
堵水
淀粉胶
裂缝
控水
fracture-cavity reservoir
water plugging
starch gel
fracture
water control
