Assessment of Drained Gas Reserves in the Process of Gas and Gas Condensate Field Operation in Water Drive

摘要

The most common method for determination of drained gas reserves is a method based on the solution of material balance equation. In case of gas drive, this equation can be solved quite simple and clear. In case of water drive, the application of classic approaches on the basis of solution of material balance equation is quite complicated. Usually these approaches are not used. The alternative approach was suggested within the framework of this paper in order to develop an express method for determination of drained reserves at water drive. This approach allows to identify the amount of invaded water in the accumulation and to estimate drained gas reserves.