THE NUMERICAL SIMULATION STUDY OF LARGE-SCALE OVERALL FRACTURING OIL RESERVOIR WITH LOW PERMEABILITY IN ORDOS BASIN

For its particularity, the numerical simulation of large-scale overall fracturing oil reservoir with low permeability in Ordos Basin is quite difficult at present. In accordance with the characteristics of Wuliwan low-permeable oil reservoir and its well-testing interpretation result, the author adjusts the reservoir permeability reasonably around the well bottom hole on the basis of equal permeating resistance method. At the same time, with the technology of cross-well conductivity adjusting and local grid refining on the basis of equal conductivity method, the fractures created by hydraulic fracturing measure in the reservoir are simulated. As a result, the regression of production data is perfect. Under different production rates and injection/production ratios, the strategic limitation for production technology is discussed. A reasonable technologic strategy of production is then designed to provide rational theoretical guidance to the development of this kind of oil field.