流动单元约束的油藏数值模拟研究

油藏数值模拟在油田开发方案的编制和确定、油田开采中生产措施的调整和优化、剩余油形成与分布以及提高油藏采收率方面,已逐渐成为一种不可欠缺的研究手段。油藏数值模拟的精度主要受油藏地质模型的精细程度和模拟模型的求解精度的影响。从提高油藏地质模型精度入手,将流动单元与油藏数值模拟相结合,通过利用流动单元细分模拟层系和针对不同的流动单元选取相应的相对渗透率曲线,提高油藏数值模拟的精度。模拟结果表明,流动单元约束的油藏数值模拟模型具有初始拟合程度高、模型修改程度低、能够更精确的反映层内和平面剩余油分布的特点。

A Study on Reservoir Numerical Simulation Restricted by Fluid Flow Unit

Reservoir numerical simulation plays a very important role in oil production scheme compiling,adjusting and optimizing of production measures,remaining oil study and enhancing oil recovery.The result precision of the reservoir numerical simulation is influenced mainly by the geologic model and the software itself.In order to improve reservoir numerical simulation precision,several methods are used,such as subdividing simulation layers by using fluid flow unit and selecting typical relative permeability curve for different flow units.The result of the simulation indicates that the reservoir numerical simulation restricted by fluid flow unit has many advantages in history matching and precision of remaining oil prediction.