Flow diagnostics for naturally fractured reservoirs
Flow diagnostics for naturally fractured reservoirs
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DOI：
10.1144/petgeo2018-136
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发表时间：
2018-02
影响因子：
1.7
通讯作者：
V. Spooner;S. Geiger;D. Arnold
中科院分区：
文献类型：
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作者：
V. Spooner;S. Geiger;D. Arnold
裂缝性碳酸盐岩储层的可靠产量预测是一个挑战。天然裂缝、不利的润湿性和复杂的基质异质性都是不确定的，并且都可能对采收率产生负面影响。理想情况下，我们应该考虑不同的储层概念封装在一个大的集合的储层模型，以量化这些和其他地质不确定性对储层性能的影响。然而，考虑许多场景的计算成本可能很高，特别是对于双重孔隙度/渗透率模型，这使得大多数资产团队无法实现稳健的不确定性量化。流量诊断为比较模型提供了全物理模拟的补充。流量诊断可在几秒钟内估算出储液器的动态响应。在本文中，我们描述了扩展的双重孔隙度模型的天然裂缝性油藏的流动诊断。我们的新诊断工具将裂缝中的平流飞行时间与基质的传输联系起来，识别传输和通量不平衡的区域，从而导致基质油波及不良和早期突破。我们的新的诊断工具已被应用到一个真实的领域的情况下，并显示比较以及与全物理模拟结果。专题集：本文是天然裂缝储层集的一部分，可在https://www.lyellcollection.org/cc/naturally-fractured-reservoirs上获得
Reliable production forecasting for fractured carbonate reservoirs is a challenge. Natural fractures, adverse wettability and complex matrix heterogeneity are all uncertain and can all negatively impact upon recovery. Ideally, we should consider different reservoir concepts encapsulated in a large ensemble of reservoir models to quantify the impact of these and other geological uncertainties on reservoir performance. However, the computational cost of considering many scenarios can be significant, especially for dual porosity/permeability models, rendering robust uncertainty quantification impractical for most asset teams. Flow diagnostics provide a complement to full-physics simulations for comparing models. Flow diagnostics approximate the dynamic response of the reservoir in seconds. In this paper we describe the extension of flow diagnostics to dual porosity models for naturally fractured reservoirs. Our new diagnostic tools link the advective time of flight in the fractures to the transfer from the matrix, identifying regions where transfer and flux are not in balance leading to poor matrix oil sweep and early breakthrough. Our new diagnostics tools have been applied to a real field case and are shown to compare well with full-physics simulation results. Thematic collection: This article is part of the Naturally Fractured Reservoirs collection available at: https://www.lyellcollection.org/cc/naturally-fractured-reservoirs