Fracture Net Model And Application Of Buried Hill Reservoirs

It's essential and hard to carry out the study of fractured reservoirs because of the complexity of fracture distribution and the importance of fractured reservoir. The objective of fractured modeling is build an objective fracture network to provide geological basis for the exploration and development of oilfields.Shen229 buried hill is taken as an example in this article, fracture is described with data from different origins and different dimensions, then obtained reliable discrete fracture net model through nesting stochastic simulation, the main contents and results are as follows:1. Identify fracture and describe its parameters with spot data.2. Analyze fracture properties using geological statistics and fuzzy neural network, the method resolve the reservoir inhomogeneity and data different size.3. Simulate fracture parameters based on the statistic characteristics of fracture and explain the complexity of fracture distribution integrated the fracture density and multilevel fractal dimension to discrete model.4. Simulate the distribution of large-scale and small-scale through nesting simulation, the model can reflect the actual distribution of fracture.5. The method have been used shen229 buried hill and proved it is effective in fractured reservoir modeling.And the following conclusions are obtained from this study:1. It's important to combine the data from different origin and scale in the denotation and statistics of the characteristics parameters of fracture. This method can solve the problem of the complexity and of fractured reservoir.2. It's shown that fracture density can denote the distribution of fracture, circular statistics and multilevel fractal can be used to study quantitatively the fracture's orientation and scale, respectively.3. Fuzzy neural network is useful in evaluation of the importance of data from different origin, the method can quantify fracture spatial distribution.4. Integrated stochastic simulation is more advanced than simulation based only on objective or grids, the outcome can be used as input parameter of reservoir simulation.