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Predicting the Permeability of Fractured Porous Rock
Middle School Attached to University of Beijing Jiaotong, Beijing, China
University of Chinese Academy of Sciences, Beijing, China
Institute of Mechanics, Chinese Academy of Sciences, Beijing, China
- 1 Middle School Attached to University of Beijing Jiaotong, Beijing, China
- 2 University of Chinese Academy of Sciences, Beijing, China
- 3 Institute of Mechanics, Chinese Academy of Sciences, Beijing, China
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Abstract
Fractures are widely distributed in tight reservoirs. Fractures and pore-throats form the flow path of oil/gas/water in reservoirs. How to determine the permeability of fractured porous reservoirs is still difficult. A group of tight sandstone samples are first used to measure the fractures and analyze the distribution rules between numbers and length, angles. The permeability changing with the fracture’s length and density for different matrix es is then computed by using pore-fracture network model. At last an empirical formula for predicting the permeability related with the fracture’s length and density is fitted based on the computed data.
KeywordsPermeabilityFractured Porous RockNetwork Model
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