油井地层压力与驱动半径计算新方法

A NEW METHOD OF ESTIMATING RESERVOIR PRESSURE AROUND A PRODUCER AND THE DRAINAGE RADIUS

文中根据油气层渗流理论,结合本油田实际,导出了一种新的油井地层压力与驱动半径计算方法。使用该方法,可以在不关井的情况下,用油水井动态参数,获得油井地层压力和驱动半径。经大庆油田22井次压力实测资料对比,平均相对误差1.57%。为油井的生产优化提供了一种重要的辅助手段。

Based on the theory of fluid flow through porous medium,this paper gives out a new method of estimating the reservoir pressure as well as the drainage radius arround a producer.By this method dynamic parameters of producers and in injecters can be used to estimate the reservoir pressure and dra- inage radius without well shut-in.A comparison of the results obtained by this method and those actually measured,in 22 well-times,shows that the average relative error is 1.57% only.Thus a complimentary technique for an optimization of the well production is suggested.