Год издания: 2015

High and low pressure zones work as natural suction pumps for oil and gas accumulation. In order to localize low pressures zones in sedimentary basins for oil and gas exploration, it is necessary to know P and S wave velocities for the medium. Also, strictly speaking, we need to know the rock densities for all layers, and consider that there are many correlation tables between seismic velocities and densities. Density is a parameter admitted to change slowly with depth, down to the top of the target interface. This work deals with a theory for stress prediction in the subsurface, and takes in consideration the constitutive parameters (density and Lame's), and the geometry of the reservoir target surface. The model does not separate the different contributions (porosity, fluids) to rock velocities, that is controlled by the constitutive parameters.