CAJ | 학술논문

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)≤10 mg/L；ρ(悬浮物)≤3 mg/L；悬浮物颗粒粒径中值 d ≤3μm。
침대 JX1-1유전주수정출현주수조항명현상승，흡수능력체감쾌적문제，진행료저층민감성실험연구、주입수화지층수정태화동태배오성연구，주입수(고상과립、현부유)단독화공동작용여저층적동태배오성실험연구。실험결과표명，수민성중등편강시저층흠주내재인소；청오혼합회주과정중결개질구야시손해저층적인소지일。령외，일관건인소시주수수질중현부물질함량초표대흡수층조성적상해，건의공제 JX1-1유전사하가저층주입수지표위：ρ(유)≤10 mg/L；ρ(현부물)≤3 mg/L；현부물과립립경중치 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.