油藏数值模拟历史拟合分析方法

发布时间：2018-05-12 07:43

本文选题：油藏数值模拟 + 历史拟合　；参考：《油气地质与采收率》2017年03期

【摘要】：油藏数值模拟历史拟合是为了验证和修正数值模拟模型,从而提高数值模拟模型的可靠性以及油田开发指标预测的准确性。目前常用的历史拟合方法缺乏系统性和规范性,从而导致了数值模拟模型的修正具有一定的随机性和随意性。在数值模拟模型建立和初始化检查的基础上,提出了一套系统的历史拟合分析方法。从分析拟合现象入手,根据拟合曲线的形态,将动、静态拟合矛盾分为5种类型,同时指出了3个关键拟合点;然后针对不同类型的拟合矛盾,进行拟合指标的影响因素分析,列出造成拟合矛盾的可能原因;再结合实际区块的动、静态资料及认识,分析数值模拟模型的不确定性,采用排除法,快速找出造成拟合矛盾的具体原因,反复修正数值模拟模型,直到满足历史拟合的精度要求。实例应用结果表明,使用该方法极大地减少了油藏数值模拟的次数,提高了历史拟合的效率和精度,也证明了该方法的实用性和有效性。
[Abstract]:The history fitting of reservoir numerical simulation is to verify and modify the numerical simulation model so as to improve the reliability of the numerical simulation model and the accuracy of prediction of oilfield development index. The commonly used historical fitting methods are lack of systematicness and normality, which leads to the randomness and randomness of the modification of the numerical simulation model. Based on the establishment of numerical simulation model and initialization check, a set of historical fitting analysis method for the system is proposed. According to the shape of fitting curve, the contradiction of dynamic and static fitting is divided into five types, and three key fitting points are pointed out. The possible causes of the contradiction of fitting are listed, and the uncertainty of the numerical simulation model is analyzed by combining with the dynamic and static data and knowledge of the actual block, and the specific reasons for the contradiction of fitting are quickly found by using the exclusion method. The numerical simulation model is modified repeatedly until it meets the precision requirement of historical fitting. The application results show that this method can greatly reduce the number of reservoir numerical simulation, improve the efficiency and accuracy of historical fitting, and prove the practicability and effectiveness of this method.
【作者单位】：中国石化胜利油田分公司勘探开发研究院;
【基金】：国家科技重大专项“特高含水后期整装油田延长经济寿命期开发技术”(2016ZX05011-001)
【分类号】：TE319

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