... ABSTRACT The acoustic velocity-stress equation of rocks is important to underground stress or pore pressure prediction. The P-wave velocity has different dependencies on stresses in different directions. An improved model between P-wave velocity and stress was established. P-wave velocity...

... permeability curve upstream oil & gas flow in porous media saturation geologist asia government permeability anisotropy oil saturation absolute permeability residual oil saturation permeability geology reservoir relative permeability anisotropy oil phase different direction irreducible...

... and the other from lateral. Ultrasonic pulse-transmission equipment was used to measure the P- and S- wave velocity at four different directions for each sample. Integrating these multiple methods from nano to macro scale, anisotropy of 3D printed gypsum rocks could be analyzed and discussed in detail...

... kerogen content (5 – 15 wt% TOC) and include sections with varying degrees of thermal maturation. Cores were extracted both from the Shefela basin of central Israel and two wells in the southern Golan Heights. We measured ultrasonic velocities of P and S waves in different directions using the ultrasonic...

... reservoir geomechanics strength normal stress fracture characterization Barton Reservoir Characterization Upstream Oil & Gas different direction Artificial Intelligence displacement base friction angle constitutive model friction angle rock joint shear strength deformability...

... geologic modeling penetration test variability pure nugget effect cube geological modeling different direction experimental variogram histogram nugget effect coal cube Upstream Oil & Gas penetrometer mechanical property sill variogram anisotropy Reservoir Characterization...