锦州9—3油田注入水适应性试验研究

用静态和动态方法研究了锦州9－3油田注入水与油层的适应性。结果表明，该油田以馆陶组地层水作为注入水水源时，注入水与油层水的相容性较好，与地层原油的配伍性较好，与岩石的配伍性不好。体积流量过量试验结果显示，当注入150倍孔隙体积注入水时，因粘土膨胀，渗透率下降达28％，若将馆陶组地层水作为入水水源，必须在注入水中加入膨剂以防止由于粘土水化膨胀而造成的地层伤害。

Experimental Study of Water Injection Adaptability in Jinzhou 9-3 Oilfield

Water injection and reservoir adaptabilities in Jinzhou 9 3 oilfield are studied by using static and dynamic methods The results indicate that when formation water in Guantao formation is used as a source of water injection in the oilfield,the compatibilities of injected water with reservoir water and injected water with crude oil are better and the injected water with reservoir stone is poor The result from the testing by volume flow overrate demonstrates that when injected water as much as 150 fold of pore volume is used,permeability is reduced as much as 28% due to clay swelling If the formation water in Guantao formation is used as a source of water injection,swelling preventing agent shall be added to the injected water to prevent formation damage from hydrated clay swell