Study of the relationship between fracture intensity distribution and geomechanical parameters in Sarvak reservoir, in an oilfield located in Dezful Embayment

In this study, the distribution of the fracture intensity in the Sarvak carbonate Formation in an oilfield located in the Dezful embayment and its relationship with geomechanical parameters were investigated. Therefore, fracture intensity data, reservoir data such as porosity, along with rock elastic properties were imported into Petrel software. In this software, after providing several seismic attributes, such as variance attributes, they were merged together using the neural network approach and converted to one driver (representative attribute) to be applied for fracture intensity modeling. After constructing the 3D grid, the imported data such as fracture intensity, porosity, and geomechanical parameters were scaled up and prepared for modeling. Therefore, all related logs including porosity, Young’s modulus, Poisson's ratio, and uniaxial compressive strength along with the fracture intensity logs were distributed in three dimensions using geostatistical algorithms, in order to investigate the relationship between geomechanical parameters and fracture network distribution. Based on this study, there is a notable relationship between geomechanical parameters and porosity while there is no logical relationship between geomechanical parameters and fracture intensity. Also, the parts with high fracture intensity in the upper and lower Sarvak do not show a clear relationship with the effective porosity distribution, indicating the effect of diagenesis processes in porosity variation during the geological time.