The Effect of Fracture Face Damage on Productivity of Fractured Wells
Key Laboratory of Exploration Technologies for Oil and Gas Resources,
Ministry of Education,Yangtze University, Jingzhou, China, Doctor
Key Laboratory of Exploration Technologies for Oil and Gas Resources, Ministry of Education, Yangtze University, Wuhan, China, Doctor
Key Laboratory of Exploration Technologies for Oil and Gas Resources, Ministry of Education, Yangtze University, Jingzhou, China, Prof.
Research Institute of Petroleum Exploration & evelopment, PetroChina, Langfang, Hebei, China, Doctor
It is important to predict the accurate productivity of fractured well for optimization of fractured parameters. The fracture face damage reduces productivity. It has certain significance to study effects of fracture face damage on productivity of fractured wells with different parameters. After the brief overview of reservoir formation damage mechanism, productivity model is established under the steady flow condition considering the reservoir formation damage by methods, such as conformal transformation, equivalent resistance method. The productivity of fractured well is calculating with the different permeability, fracture length, fracture conductivity and damage depth by using this model. The results show that, the effect of the fracture face damage is more obvious in low permeability reservoirs. Along with the formation permeability and fracture length increases, the influence of reservoir damage decreases. As the fracture conductivity and damage depth increases, the influence of reservoir formation damage increases.
Keywords: fractured well; reservoir formation damage; fracture face; productivity
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