The effective stress coefficient (ESC) is a key parameter in the linear poroelastic effective
stress formulation. In fluid-bearing porous media, the effective stress is the difference …

Although poroelastic theory predicts that the effective stress coefficient equals unity for
elastic moduli in monomineralic rocks, some rock elastic wave velocities measured at …

Understanding the relationship between pressure and rock physical parameters, such as
acoustic velocities, elastic moduli, porosity is essential for exploring and exploiting of natural …

Passing seismic waves generate transient pore-pressure changes that influence the velocity
and attenuation characteristics of porous rocks. Compressional ultrasonic wave velocities V …

We have carried out triaxial loading combined with ultrasonic testing on two Carnarvon
Basin reservoir sandstones from the Australian Northwest Shelf. These sandstones …

This study aims to develop a methodology for calibrating subsurface stress changes through
time-lapse Vertical Seismic Profiling (VSP) integration. The selected study site is the 13-10A …

dc. description. abstract Coal seam gas is an important energy resource worldwide. The
methane extraction from coal seam is often accompanied by CO2 injection to enhance the …

Oil and gas plays are continuing to move into increasingly hostile drilling environments,
including near and/or sub-salt proximities. The ability to reduce the risk and uncertainly …

Improving well design has and always will be the primary goal in drilling operations in the oil
and gas industry. To address this issue, an analysis of wellbore stability and well design …

Geophysics has several tools to obtain information about the Earth based on physical
parameters. During the investigations the observation of seismic/acoustic waves has a key …