储层流体流动单元的矿场试验

通过大庆油田厚油层矿场试验研究,对储层流体流动单元问题进行了探讨。研究认为,对于储层描述来说,基于L.A.Zaden复杂系统的“不相容原理”,随着沉积单元的变小,井间对比及砂体边界确定的难度将进一步增加,以致于无能为力。广场试验目的层葡I^1-4共划分为3个时间岩性单元,细分为7个韵律段,13个均质段。实际的油水井分时间岩性单元,韵律段、均质段测试资料以及指示剂验窜资料,有力说明了无论从油藏动态分析还是从油藏数值模拟角度出发,将时间岩性单元(即小层或单砂体)作为流体流动单元是基本可行的,进一步细分流动单元,试图实现“保砂体”模拟是很困难的。

FIELD RESEARCH ON FLOWING UNITS OF RESERVOIR FLUID

The problem of flowing units of reservoir fluid by field test research on thick pays of Daqing Oilfield was discussed. Basedon L. A. Zaden'S Principle of no-coexistence in a complex system,the finer the flowing unit used,the more difficult the correlation between wells and determination of the boundary of sandstone body, and it will become impossible at last. The resaerchpointed out:lt is well enough to use chronolithologic unit (a set or a single sandstone body)as flowing unit either for reservoirperformance analysis or use in reservoir numerical simulation. On the contrary,the attempt to use much finer flowing units andput "every single sandstone body" in numerical simulation is impractical.