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Injection-production optimization of carbonate reservoir based on an inter-well connectivity model
Energy Exploration & Exploitation ( IF 2.7 ) Pub Date : 2021-02-25 , DOI: 10.1177/0144598721994653
Yuhui Zhou 1, 2, 3 , Sheng Lei 1 , Xuebiao Du 4 , Shichang Ju 4 , Wei Li 5
Affiliation  

Carbonate reservoirs are highly heterogeneous. During waterflooding stage, the channeling phenomenon of displacing fluid in high-permeability layers easily leads to early water breakthrough and high water-cut with low recovery rate. To quantitatively characterize the inter-well connectivity parameters (including conductivity and connected volume), we developed an inter-well connectivity model based on the principle of inter-well connectivity and the geological data and development performance of carbonate reservoirs. Thus, the planar water injection allocation factors and water injection utilization rate of different layers can be obtained. In addition, when the proposed model is integrated with automatic history matching method and production optimization algorithm, the real-time oil and water production can be optimized and predicted. Field application demonstrates that adjusting injection parameters based on the model outputs results in a 1.5% increase in annual oil production, which offers significant guidance for the efficient development of similar oil reservoirs. In this study, the connectivity method was applied to multi-layer real reservoirs for the first time, and the injection and production volume of injection-production wells were repeatedly updated based on multiple iterations of water injection efficiency. The correctness of the method was verified by conceptual calculations and then applied to real reservoirs. So that the oil field can increase production in a short time, and has good application value.



中文翻译:

基于井间连通性模型的碳酸盐岩储层注采优化

碳酸盐岩储层高度非均质。注水阶段,高渗层驱油的窜流现象容易导致早水突破,含水率高,采收率低。为了定量表征井间连通性参数(包括电导率和连通体积),我们基于井间连通性的原理以及碳酸盐岩储层的地质数据和开发性能,开发了井间连通性模型。因此,可以获得不同层的平面注水分配因子和注水利用率。此外,将提出的模型与历史自动匹配方法和生产优化算法集成在一起,就可以对石油和水的实时产量进行优化和预测。现场应用表明,根据模型输出调整注入参数可使年产油量增加1.5%,这为有效开发类似油藏提供了重要指导。在这项研究中,首次将连通性方法应用于多层真实油藏,并根据注水效率的多次迭代反复更新注水生产井的注水量和产量。通过概念计算验证了该方法的正确性,然后将其应用于实际油藏。使油田可以在短时间内提高产量,并具有良好的应用价值。这为有效开发类似油藏提供了重要指导。在这项研究中,首次将连通性方法应用于多层真实油藏,并根据注水效率的多次迭代反复更新注水生产井的注水量和产量。通过概念计算验证了该方法的正确性,然后将其应用于实际油藏。使油田可以在短时间内提高产量,并具有良好的应用价值。这为有效开发类似油藏提供了重要指导。在这项研究中,首次将连通性方法应用于多层真实油藏,并根据注水效率的多次迭代反复更新注水生产井的注水量和产量。通过概念计算验证了该方法的正确性,然后将其应用于实际油藏。使油田可以在短时间内提高产量,并具有良好的应用价值。根据注水效率的多次迭代,反复更新注水井的注水量和产量。通过概念计算验证了该方法的正确性,然后将其应用于实际油藏。使油田可以在短时间内提高产量,并具有良好的应用价值。根据注水效率的多次迭代,反复更新注水井的注水量和产量。通过概念计算验证了该方法的正确性,然后将其应用于实际油藏。使油田可以在短时间内提高产量,并具有良好的应用价值。

更新日期:2021-02-26
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