Fracture Modeling and Connectivity Analysis in Northern Yueman, Fuman Oilfield, Tarim Basin

In view of the problems existing in the fracture reservoir modeling method for fine description of carbonate reservoir, the idea and method of fracture reservoir modeling based on DFN discrete fracture network model are discussed. It is proposed to establish DFN discrete fracture model at large scale and medium and small scale. Firstly, according to the deterministic modeling method, the spatial distribution model of large-scale fractures is established with 3D seismic data. Then, based on the statistical information of fracture density, length, dip angle and azimuth interpreted by core observation and imaging logging, the fracture density distribution model of the whole area is established under the constraint of the attribute body and the distance body from the fault of the seismic fracture prediction. Taking the data body as the constraint, the medium and small scale fracture network model is established by using the random modeling method to realize the constraint of the fracture density between wells. Finally, by integrating large-scale and small-scale DFN models, a comprehensive discrete fracture network model and its attribute models such as fracture porosity and permeability in the northern part of Yueman block of Fuman oilfield are established. The model reflects the three-dimensional spatial distribution characteristics of reservoir fractures and provides a geological basis for reservoir numerical simulation in this area.