摘要
注水是油气田开发过程中补充地层能量的有效方式,但是注入水中的固相悬浮物会堵塞地层,降低地层渗透率,造成注水困难。以胜利油田SNSH100区块为例,通过室内试验确定该区块对固相悬浮物的水质适配标准,并形成图版。通过CT扫描的手段研究注入水中固相悬浮物使岩心渗透率下降的机理。CT扫描结果显示,注入水中固相悬浮物降低岩心孔隙连通性,使得岩心渗透率降低。
In the process of oil and gas field development,water injection is one of the effective ways for replenishing formation energy.But suspended solids in injected water can block the formation and reduce the permeability of the formation,which causes water injection difficulties.Taken Block SNSH100 in Shengli Oilfield as an example,it was determined the adaptation standard of suspended solids in injection water in this block based on laboratory tests,and then a chart was formed.By means of CT scanning,it was studied on the mechanism of core permeability decrease by suspended solids in injected water.Results show that suspended solids in injected water can reduce the connectivity of pores in cores and the permeability of the core.
作者
张江
张秀生
冯庆伟
田相雷
曲占庆
张丁涌
ZHANG Jiang;ZHANG Xiusheng;FENG Qingwei;TIAN Xianglei;QU Zhanqing;ZHANG Dingyong(Xianhe Oil Production Plant of Shengli Oilfield Company,SINOPEC,Dongying 257068,China;China University of Petroleum(East China),Qingdao 266580,China)
出处
《复杂油气藏》
2020年第1期70-74,共5页
Complex Hydrocarbon Reservoirs
关键词
注水开发
低渗油藏
固相悬浮物
水质匹配
堵塞机理
water injection development
low permeability reservoir
solid phase suspension
water quality matching
plugging mechanism
