A series of Mb 3.8-5.5 induced seismic events in the midcontinent region, United States, resulted from injection of fluid either into a basal sedimentary reservoir with no underlying confining unit or directly into the underlying crystalline basement complex. The earthquakes probably occurred along faults that were likely critically stressed within the crystalline basement. These faults were lo...

Abstract Given the complexities of reservoir exploration and development, it is vital to understand geomechanical properties well in drilling operation. In constructing a mechanical model earth, combination environmental parameters, as magnitude direction stresses, used. this study, stress analysis its effect on azimuth deviated an oil field located southwestern Iran are investigated. Necessary...

As part of the government response to the Deepwater Horizon blowout, a Well Integrity Team evaluated the geologic hazards of shutting in the Macondo Well at the seafloor and determined the conditions under which it could safely be undertaken. Of particular concern was the possibility that, under the anticipated high shut-in pressures, oil could leak out of the well casing below the seafloor. Su...

slope stability is one of the major and determiner parameters in the economy and safety of open pit mines. failure and consequently rupture of the slope caused no compensable economic and humanity losses. so, probability assessment of the further failure for presentation of damages and additional costs is of prime importance. in this research, stability analysis and probability assessment of th...

The drilling fluid invasion into hydrate-bearing sediments will change the geomechanical properties of reservoir and may lead to uncontrolled geological disasters in worst case. Native are replaced with artificial samples this study investigate effect on strength behaviors sediments. triaxial test is used primarily assess at varying temperatures, pressures, hydrate saturation levels. process wa...

Abstract The harvest of hydrocarbon from the depleted reservoir is crucial during field development. Therefore, drilling operations in faced several problems like partial and total lost circulation. Continuing production without an active water drive or injection to support pressure will decrease pore fracture pressure. Moreover, this depletion affect distribution stress change mud weight windo...

The success of shale gas in North America has attracted increased interest in “unconventional” reservoirs. Two critical factors for shale-gas reservoirs are units amenable to hydrologic fracture stimulation and sufficient natural gas content. The effectiveness of hydrologic fracture stimulation is influenced by rock geomechanical properties, which are related to rock mineralogy. The natural gas...