基于流管法剩余油分布分析应用方法研究

付莹 尹洪军 王美楠

摘 要： 随着水驱开发油田开发进入高含水期，油田后期开采难度加大，为实现油田的保产稳产需要进行油田的剩余油分布研究从而实现油田进一步的挖潜。采用流管法以实现油田剩余油分布数值模拟研究。建立了一注一采以及反九点法井网概念模型，结合B-L方程求解，绘制了相应概念模型的渗流模板，说明了运用渗流模板进行水驱开发油藏开发效果评价方法。分别分析了一注一采以及反九点法面积井网概念模型饱和度场，与床用数值模拟软件结果进行对比，进一步验证说明流管法进行油田数值模拟研究的可行性。选取某实际区块进行流管法数值模拟研究并且与传统数值模拟方法进行对比分析，说明流管法在进行油田开发剩余油分布分析方面的适用性。

关 键 词：流管法;数值模拟;剩余油

中图分类号：TE 357 文献标识码： A 文章编号： 1671-0460（2015）06-1415-04

Reservoir Remaining Oil Numerical Simulation Based on Stream-tube Method

FU Ying1，YIN Hong-jun1，WANG Mei-nan2

（1. Key Laboratory of Enhanced Oil Recovery of Ministry of Education， Northeast Petroleum University， Heilongjiang Daqing 163318，China; 2. Bohai Oilfield Research Institute of CNOOC Ltd.-Tianjin Branch， Tianjin 300452，China）

Abstract： The water flooding oilfield has entered high water cut period， the exploitation becomes more and more difficult at the late stage of oil field development， in order to keep stable and high productivity and tap the potential of the remaining oil， study on the remaining distribution rule is demanded. In the paper， stream-tube model was established to conduct numerical simulation research on the oilfield remaining oil distribution rule. One injection well and one production well conceptual model and nine-spot patterns were established， combined with B-L equation， seepage template was drawn， and the method to evaluate the water flooding development using the template was elaborated. Water saturation fields of the two conceptual models were drawn and contrasted with ECLIPSE to prove its validity. Actual oilfield block numerical simulation was conducted using the stream-tube model and contrasted with common method to prove its validity in actual oilfield numerical simulation study.

Key words： Stream-tube model; Numerical simulation; Remaining oil

随着我国的大多数油田进入高含水开发后期，油井含水率迅速上升，油井产油量下降，油田开采难度加大[1]。保证油田的稳定开发要求进行剩余油分布的快速分析[2，3]，以及实现油田进一步剩余油挖潜工作[4-6]。近年来，油田现场的数值模拟研究工作主要包括以下几个方面：①建立地质模型;②动、静态拟合研究;③未来开发效果预测研究[7，8]。这种典型的数值模拟研究方法，工作量大，工时长，不易掌握。采用流管法进行数值模拟研究能够有效的避免上述问题，并且该方法在进行油藏开发效果评价描述方面具有显著的优势[9-12]。……