公开(公告)号：US6023656A

公开(公告)日：2000-02-08

申请号：US972

申请日：1997-12-30

申请人： Marie-Christine Cacas ,  Sylvain Sarda ,  Bernard Bourbiaux ,  Jean-Claude Sabathier

发明人： Marie-Christine Cacas ,  Sylvain Sarda ,  Bernard Bourbiaux ,  Jean-Claude Sabathier

IPC分类号： E21B49/00 ,  G06F19/00

CPC分类号： E21B49/00

摘要： Method for determining the equivalent fracture permeability of a fracture network in a subsurface multi-layered medium from a known representation of this network. The equivalent fracture permeability of a fractured network in a subsurface multi-layered medium, is determined by discretizing with a specific procedure each fracture (F) of the fracture network in fracture elements (R) (such as rectangles for example) and defining nodes N representing interconnected fracture elements in each layer of the medium and determining fluid flows (steady-state flows e.g.) through the discretized network while imposing boundary pressure conditions and fluid transmissivities to each couple of neighboring nodes. The method allows for a systematic linking of fractured reservoir characterization models with dual-porosity simulators in order to create a more realistic modeling of a fractured subsurface geological structure. The method can be implemented for example in oil production by reservoir engineers for obtaining reliable flow predictions.

摘要翻译： 从该网络的已知表示确定地下多层介质中断裂网络的等效断裂渗透性的方法。 断层网络在地下多层介质中的等效断裂渗透率是通过以断裂元素（R）（例如矩形）中的断裂网络的每个断裂（F））和定义节点N 表示介质的每层中的相互连接的断裂元素，并且通过离散网络确定流体流（例如稳态流），同时对每对相邻节点施加边界压力条件和流体透射率。 该方法允许断裂储层表征模型与双孔隙模拟器的系统连接，以便为断裂的地下地质结构创建更逼真的建模。 该方法可以例如在油藏工程师的石油生产中实现，以获得可靠的流量预测。