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应用数值模拟方法模拟油藏动态时,其中一项重要的拟合指标就是模拟器计算的井网格压力拟合实际地层压力。然而,由于井的排泄半径不等于井所在网格的等效半径,……,所以计算的井网格压力与实际地层压力不能简单直接作比较。本文提出了一种校正实际地层压力的方法,并附有实际算例。利用这个方法可以解决上述两种压力的严格比较问题。把通过校正后的实测地层压力作为模拟计算对比使用的基础资料,对比结果表明,可提高拟合实际地层压力精度的百分之几至百分之十几,从而有效地提高了数值模拟方法的实用性和理论计算结果的可靠性。
One of the most important fitting criteria when simulating reservoir dynamics using numerical simulations is that the well grid pressure calculated by the simulator fits the actual formation pressure. However, since the discharge radius of the well is not equal to the equivalent radius of the grid where the well is located, the calculated well grid pressure can not be simply compared directly with the actual formation pressure. This paper presents a method to correct the actual formation pressure with practical examples. The use of this method can solve the strict comparison of the two pressures. Based on the corrected measured formation pressure as the basic data for comparison and simulation, the comparison results show that the accuracy of fitting the actual formation pressure can be improved by a few percent to ten percent, which effectively improves the accuracy of the numerical simulation method Practicality and reliability of theoretical calculations.