广适水驱曲线求解新方法及应用

发布时间：2019-03-01 09:26

【摘要】：广适水驱曲线解决了常规水驱曲线含水率及原油黏度适应范围较窄的问题,但目前广适水驱曲线3个待定常数需采用试凑法求解,结果存在不确定性。文中利用广适水驱曲线水驱动用储量N_R与甲型水驱曲线斜率B值关系,结合历史含水率上升规律的误差分析,建立了广适水驱曲线的求解新方法,该方法避免了由于系数q值的变化导致NR值的不稳定性,提高了水驱曲线在产量及含水率上升规律预测中的精度。改进算法后的广适曲线,可应用于水驱油田产液结构调整评价、油井措施前后水驱动用储量评价等。
[Abstract]:The wide-range water-drive curve solves the problems of water cut and crude oil viscosity in conventional water-drive curve, but the three undetermined constants of wide-range water-drive curve need to be solved by trial-and-error method at present, and the results are uncertain. In this paper, a new method for solving the wide range water drive curve is established by using the relationship between the water drive reserve N / R and the slope B value of the water drive curve A, and combining with the error analysis of the rising law of the historical water cut, a new method for solving the wide range water drive curve is established in this paper. This method avoids the instability of NRvalue due to the change of coefficient Q, and improves the precision of water drive curve in predicting the law of yield and water cut rise. The improved algorithm can be applied to the adjustment and evaluation of fluid production structure in water-drive oilfield and the evaluation of water-driven reserves before and after oil well measures.
【作者单位】：中海油研究总院规划研究院;海洋石油高效开发国家重点实验室;
【基金】：国家科技重大专项课题“国内油气开发发展战略研究”(2016ZX05016-006)
【分类号】：TE357.6

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