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合理利用边水对于边水活跃的油藏开发非常有意义,前提条件是准确计算天然水体体积。针对天然水体体积计算难题,从水侵量的定义公式出发,以春光油田排2理想边水驱油藏为例,采用综合压缩系数进行校正,获得理想边水驱油藏天然水体体积的简便估算方法。经廖运涛方法获得的精确解验证,新方法计算精确度较高。对于井网完善,已全面投入开发,完全依靠边水补充能量,以自喷为主的高渗透、稀油油藏,在有明显油层压降的情况下,只要能够落实清楚总压降值和与之对应的水侵量,就可以准确估算出天然水体的体积。根据水体体积与原油体积的比值,判断该油藏天然能量的充沛程度,决定是否人工补充能量或者依靠天然能量开采。
The rational utilization of edge water is very meaningful for the development of active water reservoir, provided that the volume of natural water body is accurately calculated. In view of the problem of volume calculation of natural water body, starting from the definition formula of water influx, taking the ideal water flooding reservoir in Pai 2 of Chunuang oilfield as an example, the comprehensive compressibility coefficient is used to correct and obtain a simple estimate of the volume of natural water body in the ideal side water flooding reservoirs method. The exact solutions obtained by the method of Liao Yun-tao verify that the new method has higher computational accuracy. For the well network has been fully developed, fully rely on the edge of the water to supplement energy to self-spray-based high permeability, dilute reservoir, in the case of significant pressure drop, as long as the implementation of a clear total pressure drop and Corresponding to the volume of water intrusion, we can accurately estimate the volume of natural water. According to the volume of water volume and the ratio of crude oil volume to determine the natural abundance of the reservoir to determine whether the manual replenishment of energy or rely on natural energy extraction.