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Dynamic and Static Combination Method for Fracture-Vug Unit Division of Fractured-Vuggy Reservoirs

机译:缝洞型油藏缝洞单元划分的动静组合方法

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Ying Mai-2 Block of Tarim Oil Field is a karst fractured-vuggy reservoir. Along with the research on well location demonstration and recovery ratio improvement in the developing progress, the importance of fracture-vug unit division is gradually revealed. This paper presents an integrated method for establishing a fractured element/flow unit in the oil field and discusses its importance and its influence on future well location optimization. With more dynamic data from the oil field, this workflow can be reused to divide the unit during the whole life of the well. This paper begins with the understanding and characterization of involved reservoirs, then establishes a geological concept model and makes clear reservoir type, geometric boundary, reserves and aquifer energy of the fracture-vug unit. Dynamic and static data are used by multidisciplinary means to describe the fracture-vug unit, and reasonable recommendations are proposed on well testing for these reservoirs. A comprehensive evaluation on the fracture-vug combination model and dominant reservoir type is made based upon the flow experiments of a large-scale physical model in combination with production performance and well testing data. Based on this, the fracture-vug units in an individual well are divided using dynamic production characterization. Finally, the fracture-vug units for Ying Mai-2 Block are divided by seismic prediction and gridding judgment taking the units with well data as the standard, and thus a powerful guidance for the reservoir development at present stage is provided.
机译:塔里木油田英麦2区块为岩溶缝洞型储层。随着对井位示范和采收率提高的研究的不断发展,裂缝-孔洞单元划分的重要性逐渐显现出来。本文提出了一种在油田中建立裂缝单元/流动单元的综合方法,并讨论了其重要性及其对未来井位优化的影响。利用来自油田的更多动态数据,可以在井的整个生命周期中重复使用此工作流程来划分单元。本文首先从对相关储集层的认识和特征入手,建立了地质概念模型,明确了缝洞单元的储层类型,几何边界,储量和含水层能量。多学科手段利用动态和静态数据来描述缝洞单元,并为这些油藏的试井提出了合理的建议。基于大型物理模型的流动实验,结合生产性能和试井数据,对裂缝-缝洞组合模型和主要储层类型进行了综合评价。基于此,使用动态生产特征将单个井中的缝洞单元划分。最后,以地震资料和格网判断为依据,对盈麦2断块的缝洞单元进行划分,并以井资料为标准,为现阶段的储层开发提供有力的指导。

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