Fractured Reservoir Simulation
Fractured Reservoir Simulation
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DOI：
10.2118/9305-pa
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发表时间：
1980
期刊：
影响因子：
--
通讯作者：
L. K. Thomas;T. N. Dixon;R. G. Pierson
中科院分区：
文献类型：
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作者：
L. K. Thomas;T. N. Dixon;R. G. Pierson
本文介绍了一个三维（3D），三相模型模拟水，油，天然裂缝性油藏中的气体流动的发展。双孔隙度系统用于描述裂缝和基质块中存在的流体。储层中的主要流动发生在裂缝内，裂缝系统和基质块之间存在局部流体交换。基质/裂缝传递函数基于Warren和Root开发的方程的扩展，并考虑了毛细压力、重力和粘性力。裂缝流动方程和基质/裂缝流动都隐式求解压力、含水饱和度、含气饱和度和饱和压力。作者提出的例子问题，以证明该模型的实用性。这些包括他们的结果与以前的结果的比较：使用一个详细的三维网格与使用裂缝模型的矩阵/裂缝传递函数的结果获得的个别块矩阵/裂缝传输的比较;和3D场规模的模拟两相流和三相流。三相实例说明了自由气饱和度对水驱采收率的影响。
This paper describes the development of a threedimensional (3D), three-phase model for simulating the flow of water, oil, and gas in a naturally fractured reservoir. A dual porosity system is used to describe the fluids present in the fractures and matrix blocks. Primary flow in the reservoir occurs within the fractures with local exchange of fluids between the fracture system and matrix blocks. The matrix/fracture transfer function is based on an extension of the equation developed by Warren and Root and accounts for capillary pressure, gravity, and viscous forces. Both the fracture flow equations and matrix/fracture flow are solved implicitly for pressure, water saturation, gas saturation, and saturation pressure. The authors present example problems to demonstrate the utility of the model. These include a comparison of their results with previous results: comparisons of individual block matrix/fracture transfers obtained using a detailed 3D grid with results using the fracture model's matrix/fracture transfer function; and 3D field-scale simulations of two- and three-phase flow. The threephase example illustrates the effect of free gas saturation on oil recovery by waterflooding.