摘要
针对JX1-1油田注水井出现注水阻抗明显上升,吸水能力递减快的问题,进行了储层敏感性实验研究、注入水和地层水静态和动态配伍性研究,注入水(固相颗粒、悬浮油)单独和共同作用与储层的动态配伍性实验研究。实验结果表明,水敏性中等偏强是储层欠注内在因素;清污混合回注过程中结钙质垢也是损害储层的因素之一。另外,一关键因素是注水水质中悬浮物质含量超标对吸水层造成的伤害,建议控制JX1-1油田沙河街储层注入水指标为:ρ(油)≤10mg/L;ρ(悬浮物)≤3mg/L;悬浮物颗粒粒径中值d≤3μm。
Focusing on the problem of flooding resistance rising obviously and water injection ca-pacity declining quickly during the water flooding development in JX1-1,a series of concerned experi-ments were carried out,such as formation sensitivity analysis,the static and dynamic compatibility a-nalysis of injected water and formation water,dynamic compatibility evaluation of injected water （sol-id particles,suspended oil）with formation individually and collectively.The experimental results show that the strong water sensitivity is an internal factor,calcium scale is one factor of reservoir damage during mixed water reinjection,and another key factor is the excessive content of suspended material in water injection.It is suggested that injected water quality control indicators of Shahejie formation in JX1-1 Oilfield are as follows：suspended oil content ≤10 mg/L;suspended particle con-tent ≤3 mg/L;and suspended particle size median d≤3 μm.
出处
《石油与天然气化工》
CAS
北大核心
2015年第2期86-90,共5页
Chemical engineering of oil & gas
基金
中国海洋石油(中国)有限公司“中国近海低孔低渗油气藏勘探开发关键技术与实践”(CNOOC-SY-001)
“低渗透油田注水水质综合评价与注水剖面均衡控制研究”(CCL2012TJPZTS0380)
关键词
配伍性
结垢
敏感性实验
水质控制指标
固相颗粒
悬浮油
compatibility
scaling
sensitivity experiment
injected water quality control indicator
solid particle
suspended oil
