Abstract We demonstrate that pore pressure and stress changes resulting from several decades of oil gas production significantly affect the likelihood injection-related induced seismicity. illustrate this process in Delaware Basin (western Texas southeastern New Mexico, USA), which hydraulic fracturing waste-water injection have been inducing numerous earthquakes southernmost part basin where t...

in this research, a new mathematical modeling on strength changes due to reservoir elastic stresses across the preexisting fault plane is introduced. the method has been applied to the dalpari fault, which is one of the potential seismic sources in the vicinity of the karkheh reservoir. in this method the distribution of total stress across the fault cannot be determined because the initial str...

In geotechnical engineering, the mechanical behavior of rocks under various In-situ conditions (stress state including axial stress, confining pressure, pore water pressure) have always been an important topic. Therefore, pressure effect on permeability and different size sandstone samples a certain condition was studied. The sizes shows roughly same exponential de-creasing law with increase pr...

in this research the mechanical behavior of an expansive soil (with different pore fluid) was investigated under the constant and variable temperature through experimental tests. the soil samples with different pore fluid (distilled water, nacl and cacl2 with concentration of 250 gr/lit) were prepared by static compaction method. experimental testes were conducted in two modified odometer under...

Experimental evidence shows that changes in pore-water chemistry can significantly affect the mechanical behavior of saturated active clays. Despite this evidence, how chemical composition pore water be considered effective stress definition is questionable. This paper develops concept generalized for To end, physicochemical studies on water–clay mineral interactions are used to clearly define ...