... Dynamics tensile fracture hydraulic fracturing daneshy 2003 PhD Dissertation experiment shear fracture University shear assumption cohesionless sand permeability Simulation sandstone fracture equation Upstream Oil & Gas pore pressure Alberta numerical model november 2015 mechanics...

... 24 8 2015 4 7 2015 18 11 2015 22 12 2015 2015.Society of Petroleum Engineers Reservoir Characterization flow in porous media complex reservoir pore pressure hydraulic fracturing Engineering Upstream Oil & Gas shale gas reservoir shale gas Fluid Dynamics...

...Oscar Contreras; Geir Hareland; Roberto Aguilera Summary This work establishes an effective approach to predict pore pressure in theoverpressured Montney shale and overburden from sonic logs by implementingnormal-trend and explicit methods. The cause of the overpressure condition inthe Montney...

.... One of the outstanding issues in rock fracturing is todetermine the magnitude of applied effective stress. The generaleffective-stress law is defined as se ff = s c - as p , where s c and s p are total confining stress and fluid pore pressure,respectively. Each physical quantity of rock responds...

... & Gas coal bed methane constant pv compressibility production rate permeability change equation porosity effective stress literature permeability pore pressure PV compressibility cleat system Colorado complex reservoir cumulative production assumption exponentially variable pv...

... and pore pressure changes. The numerical simulation is carried out by using a self-developed coupled finite element model which incorporates our proposed strain-induced permeability model. The obtained simulation results were compared with the measured data. Introduction Thermal recovery processes involve...

... 2008 1 10 2008 2008. Petroleum Society of Canada complex reservoir pore pressure coalbed methane Engineering coal bed methane Upstream Oil & Gas Laboratory Investigation coal seam gas adsorption methane production permeability measurement coal core net stress co 2 kPa...

... using the conventional permeability model as a function of volumetric strain because the volumetric strain is small. However, the strain-induced permeability model can accurately reflect the directional increase in permeability during water injection. It is shown that the induced pore pressure...

... of geomechanics in reservoir simulation, particularly in the thermal recovery of oil from oil sands reservoirs. Deformations in an oil sands reservoir are induced by the changes of pore pressure and temperature due to fluid injection and production in thermal recovery processes. In turn, the changes...

... the top gas/water and the oil sands reservoir. The top water zone is assumed to be a thief layer. The SAGD process applies higher thermal stress and induces higher pore pressures inside the mudstone layer. Thus, the mudstone becomes weaker or even fails as a result of shear failure or tensile failure...

... 2006. Petroleum Society of Canada coal bed methane coal seam gas Engineering cleat permeability model fracture reservoir geomechanics coalbed methane Fluid Dynamics desorption specimen compression Reservoir Characterization flow in porous media Upstream Oil & Gas pore pressure...

...P.K. Frempong; S.D. Butt The concept of effective stress coefficient, "n," is critical for the study of stress and pressure-dependent behaviour of rocks. This parameter is used to scale the pore fluid pressure for the computation of effective stress and impacts on the accuracy of pore pressure...

... sand production monitoring bitumen pore pressure sand pack enhanced recovery complex reservoir bubble point depletion test depressurization matrix deformation Reservoir Surveillance Upstream Oil & Gas oil production MPa Canadian Petroleum Technology core pore pressure Artificial...

...P. Li; R.J. Chalaturnyk; M. Polikar In the SAGD process, steam injection may result in pore pressure changes around the steam chamber in the reservoir. The magnitude of the pore pressure change depends on the steam injection pressure and the relative position of the steam chamber within...

... Fluid Dynamics pore pressure mechanism massive sand production erosion flow in porous media sand production Simulation erosion model pressure gradient reservoir geomechanics cold production reservoir-geomechanic model deformation permeability oil production Sand Erosion onset May...

... studied include: initial in situ effective stress state; initial pore pressure; steam injection pressure and temperature; and, process geometry variables, such as well spacing and wellpair spacing. Introduction The geomechanical response of an oil sands/heavy oil reservoir is complex, reacting to both...

..., both isotropic and shear stress loading occur simultaneously. In the SAGD process, saturated steam with high pressure and temperature is continuously injected into the reservoir. Steam injection pressure results in in increase of pore pressure. So, effective stress is decreased and clastic deformation...

... to escape; this is termed a "drained test." In the second method, the pore fluids are not allowed to dissipate; this is termed an "undrained test." This has a profound effect on the behavior of the tested materials. In an undrained test, pore pressures will initially support the majority of the incremental...

... downhole conditions was used to determine the effects of confining pressure, pore pressure, temperature, and fluid types on the porosity and permeability of the shales tested. Compaction tests were conducted with de-ionized water under various confining pressures, constant pore pressure, and temperature...

... potential of drilling fluids on transient pore pressure and time-dependent rock property alterations of shale formations. The current work presents the concept, and discusses the results of these undertakings. The experiments using a Pore Pressure Transmission Test (PPT) apparatus expose formation (shale...