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应用常规物质平衡方法进行石油地质储量计算需要可靠的平均地层压力资料,而实际注水开发的多井油藏中,要获得可靠油藏平均地层压力非常困难。将物质平衡方程与拟稳态理论相结合,建立了一套基于流压速率确定水驱油藏石油地质储量的物质平衡方法,解决了考虑产水和注水油藏的基于流压速率的物质平衡计算问题。将该方法应用于塔河油田2区313缝洞单元,计算得到研究区的石油地质储量为530.64×104t,与递减法推算出的石油地质储量比较,它更接近塔河油田的真实情况。
The calculation of petroleum geological reserves using the conventional material balance method requires reliable average formation pressure data. However, it is very difficult to obtain a reliable reservoir average formation pressure in a multi-well reservoir that is actually flooded. Based on the material balance equation and quasi-steady state theory, a set of material balance method was established to determine the petroleum geological reserves of waterflooding reservoirs based on the pressure-flow rate, and the material balance based on the pressure-flow rate Calculate the problem. Applying this method to Unit 313 in Unit 2 of Tahe Oilfield, the calculated petroleum geologic reserve in the study area is 530.64 × 104t, which is closer to the real situation in Tahe Oilfield as compared with the estimated petroleum geologic reserves.