ABSTRACT
Rock properties are controlled by a combination of confining and pore pressure as defined by the effective stress law. The existence of effective pressure coefficients is very well known but rarely accounted for. A rock under confining pressure and with a fluid inside will respond to changes of the pressure /stress conditions depending on the frame structure of the rock, porosity, and compressibility of the pore fluid, among other critical components.
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2005. Society of Exploration Geophysicists
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