Numerical Simulation of Production Performance of Fractured Wells in Weak Deformed Media
Fractured wells are widely used in the development of low permeability reservoirs at present. As well known, the weak stress sensitivity usually exists in low permeability reservoirs, and the hydraulic fracture conductivity varies with time. Therefore, these effects should be considered in the numerical simulation of low permeability reservoirs developed by fractured wells. The black oil model was improved in the paper, and the relations of the matrix permeability changing and the hydraulic fracture conductivity changing were considered in the model. Base on this method, fluid-solid coupling is replaced in the simulation of production performance of fractured wells in deformed media. Results show influences of weak stress sensitivity on pressure distribution and developed effect is not great. But the change of the hydraulic fracture conductivity has a great influence on pressure distribution and developed effect. In the initial stage of simulation, pressure contours near fractured wells is oval. When the fracture conductivity disappears, pressure contours near wells is circular shape. The fracture conductivity is stronger, the oil production is higher and the water breakthrough time is earlier.
fractured wells numerical simulation fluid-solid coupling stress sensitivity fracture conductivity
SHEN Rui GAO Shusheng HU Zhiming
Institute of Porous Flow and Fluid Mechanics. China Academy of Sciences. P.R.China. 065007
国际会议
成都
英文
373-377
2010-10-10（万方平台首次上网日期，不代表论文的发表时间）