油藏数值模拟历史拟合分析方法
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于金彪(1970—),男,河北故城人,高级工程师,博士,从事油藏地质建模及数值模拟方面的研究。联系电话:13854609586,Email: yjb0920@126.com。

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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)。


History matching analysis method on reservoir numerical simulation
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    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 purpose of history matching of reservoir numerical simulation is to verify and modify the numerical simulation model,so as to improve the reliability of numerical simulation model and the prediction accuracy of oilfield development indexes. At present the common methods of history matching lack systematicness and normativity,which introduces a certain randomness and arbitrary to the modification of the numerical simulation model. A set of systematic analysis method of history matching was put forward based on numerical simulation model building and initialization inspection. Starting with the analysis of matching phenomenon,matching contradictions between dynamic and static data can be divided into five types and three key matching points were also pointed out based on matching curve shape. According to the different types of matching contradictions,influence factors on matching indexes were analyzed and the possible causes of matching contradiction were listed. Combined with the dynamic and static data and understanding of the actual block,the uncertainty of the numerical simulation model was analyzed. Exclusive method was used to quickly determine the specific reasons for matching contradictions. The numerical simulation model was repeatedly modified until the accuracy of history matching was attained. The case showed that the number of times of the numerical simulation is greatly reduced,and the efficiency and accuracy of the history matching are improved using the method. The practicability and validity of the method are proved.

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于金彪.油藏数值模拟历史拟合分析方法[J].油气地质与采收率,2017,24(3):66~70

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  • 在线发布日期: 2017-03-29