A new approach to determine geomechanical parameters of Vertical Transverse Isotropic media using VSP data
MetadataShow full item record
Conventionally, high frequency Dipole Shear sonic Imager (DSI) logs are used for anisotropic modeling where fast and slow shear wave's velocities are required. However, the results obtained from a DSI log are restricted to a specific and possibly short interval of the wellbore. The aims of this paper are to use Vertical Seismic Profile (VSP) data and show its application in geomechanical analysis of subsurface layers under anisotropic condition. After processing and separating upgoing and downgoing P- and S-waves, a methodology based Vertical Transverse Isotropic (VTI) condition was presented to determine elastic stiffness parameters. Having stiffness parameters determined, elastic modulus, strength and in-situ stress parameters were estimated and calibrated against the field and core sample data. Although the VSP based geomechanical parameters were calibrated against the real field data, the accuracy of the method cannot be as much as that of the well logs. However, the method presented in this paper may become a very good asset for geomechanical evaluation of the intervals where well log data are not available.
Showing items related by title, author, creator and subject.
Applications of intelligent systems in petroleum geomechanics - Prediction of geomechanical properties in different types of sedimentary rocksRajabi, M.; Tingay, Mark (2013)Rock mechanical properties including wave velocities, Poisson's ratio, Young's, shear and bulk modulus have important applications in geomechanical analysis of petroleum reservoirs. Direct measurement of these parameters ...
Younessi, Ahmadreza; Rasouli, Vamegh (2010)Sand production is an important issue in reservoirs with weak or unconsolidated sand formations. Production of sand not only causes several problems in maintaining wellbore integrity but also is a problem during production ...
A modified fuzzy inference system for estimation of the static rock elastic properties: A case study from the Kangan and Dalan gas reservoirs, South Pars gas field, the Persian GulfKadkhodaie, Ali; Ranjbar-Karami, R.; Shiri, M. (2014)Rock deformation parameters including Young's modulus, Poisson's ratio, shear modulus and bulk modulus (E, υ, K and G, respectively) are important geomechanical properties that have many applications in wellbore stability ...