物质平衡微分方程在油(气)藏水侵计算中的应用

DIFFERENTIAL EQUATION OF MATERIAL BALANCE AND ITS APPLICATION IN THE ESTIMATION OF WATER INFLUX INTO AN OIL(GAS)RESERVOIR

在传统的水侵计算方法的基础上,用物质平衡微分方程解决了三个水侵计算的问题:(1)油(气)藏边内、边外注水时物质平衡微分方程的应用;(2)有含水层的未饱和油藏、带气顶的饱和油藏与气藏应用物质平衡微分方程进行水侵计算的方法;(3)一个含水层中有多个油藏的系统,考虑油藏之间的干扰的水侵计算方法。从而形成了一套应用物质平衡微分方程进行油(气)藏水侵计算的完整的方法。

Based on the traditional technique of estimation of water influx into an oil (gas) reservoir, this paper gives solutions to the following proble- ms by the application of the differential equation of material balance: 1) The application of differential equation of material balance in inside and outside boundary water injection; 2) A technique for the estimation of water influx into an undersatu-rated oil reservoir, an oil reservoir with a gas cap or a gas reservoir by the application of differential equation of material balance; 3) A technique for the estimation of water influx in case that multiple reservoirs are included in an integrated aquifer when the interference of different reservoirs are taken into consideration. Thus, a complete set of technique of water influx by means of differential equation of material balance is resulted mad the application of such a technique is generalized.