Editorial office of ACTA PETROLEI SINICA ›› 2010, Vol. 31 ›› Issue (5): 815-819.

• Oil Field Development •

### Mathematical model of fluid flow in fractured vuggy reservoirs based on discrete fracturevug network

YAO Jun  HUANG Zhaoqin  WANG Zisheng  LI Yajun  WANG Chenchen

• Online:2010-09-25 Published:2010-11-30

### 缝洞型油藏的离散缝洞网络流动数学模型

1. 中国石油大学石油工程学院  山东青岛  266555
• 通讯作者: 姚 军
• 作者简介:姚 军，男，1964年3月生，1984年毕业于华东石油学院，现为中国石油大学（华东）教授，博士生导师，主要从事油气田开发工程的教研工作。
• 基金资助:

国家重点基础研究发展规划（973）项目（2006B202404）和国家科技重大专项（2008ZX05014-05-003）联合资助。

Abstract:

The current percolation theory is difficult to describe the fluid flow mechanism in naturally fractured vuggy reservoirs. A new mathematical model, namely discrete fracture-vug network model, was proposed to solve the problem. The fractured vuggy reservoir was divided into three systems in the new model, including the porous rock system, fracture system and vug system. The fractures and vugs were supposed to be embedded in the porous rock, and the isolated vugs were connected via discrete fracture network. The fluid flow in porous rock and fractures followed the Darcy Law. The rock fractures were taken as seepage area, and the vugs system was the free fluid flow region. The principles of the mathematical model were discussed. The corresponding finite element numerical formulas were proposed. The numerical computation results showed that the discrete fracture-vug network model could provide a natural way for modeling the realistic conditions in fractured vuggy reservoirs.