... Reservoir Characterization Upstream Oil & Gas pore pressure specimen hydraulic fracturing fluid front fluid pressure flow in porous media prefabricated flaw experiment reservoir geomechanics fluid diffusivity Fluid Dynamics diffusivity Coalescence Injection Rate fracture...

... and finite difference for fluid flow. The fluid lag is first automatically captured using the Elrod-Adams lubrication cavitation model during the initiation and early stage of fracture growth. We then switch to an algorithm tracking the fluid front for computational efficiency. Using dimensional analysis, we...

... shear stress hydraulic fracture shear slip aperture propagation shear failure fluid front dilation 1. INTRODUCTION In the last decade, following the success of horizontal drilling and multistage fracturing in the Barnett Shale, exploration and drilling activities in shale gas and shale oil...

... invaded portions of the fracture that had a relatively low fracture stiffness and then spread to the regions with higher stiffness. In conclusion, the fluid front can be detected seismically and the spatial variation of fracture stiffness is correlated to the fluid flow path. 1. INTRODUCTION A goal...

... createdby explosive loading. a) 530 s, b) 710 s, c) 1010 s. 956 ROCK MECHANICS IN PRODUCTIVITY, PROTECTION Note in Figure 7a that the fracture front at 530 s is well advanced compared to the fluid front. In particular the fracture has already exited the sides of the model. Notice also that the fluid...