一种油气藏裂缝网络模拟优化生成技术

A new approach to optimistically model fracture networks of hydrocarbon reservoirs

裂缝油藏和非均质油藏的结构是很复杂的 ,往往难以描述尺度和几何形态。不同于地质统计学 ,强调裂缝网络模型的油藏动态反演检验 ,提出了一种油气藏天然裂缝网络的数值模拟优化生成技术 ,动态模拟不同尺度上的油藏非均质和天然裂缝网络的几何结构。主要思路为 :裂缝网络的迭代生成 ,裂缝网络中流体流动的有限元模拟 ,模拟退火优化天然裂缝网络几何结构。实例表明 ,该技术用试井和优化的计算方法编程 。

It is hard to describe the scale and geometry of fracture and heterogeneous reservoirs because of their complicated structures.A new approach is presented to model natural fracture networks of hydrocarbon reservoirs especially,emphasized to check reservoir behaviors,to generalize the geometry structure of natural fracture networks on scales.The main ideal are to generalize the ideal fracture models using the method of Iterated Function System,to set up the fluid flowing models based on the Finite Element Method,to optimize the above fracture networks by Simulated Annealing and Genetic Algorithm.Example shows the new approach is available to model the complicated fracture networks of hydrocarbon reservoirs.