... ABSTRACT: The intersection of the pre-existing natural fractures (NF) with the hydraulic fractures (HF) forms a complex fracture network, which allows for increased well productivity. However, the complex fracture geometry may adversely affect the proppant placement and its transportation...

... their stability states (block stability analysis) for instability analysis around the surface and underground excavations (see Figure 1). fracture voxel identification fracture characterization real time system intersection hydraulic fracturing discontinuity geometry reservoir characterization...

... ABSTRACT: The behavior of intersections is central to the fluid flow and transport evolution of a fracture network in response to chemical and physical processes. Here, laboratory experiments were performed to explore the evolution of network geometry during loading of a 3D printed fracture...

... stress. The fluid-solid couple action, fluid flow, and mass transfer during fracturing were considered. By means of the control variable method, we analyzed the intersection characteristic between hydraulic fracture and a cave and whether it could be penetrated. The results show that when hydraulic...

...ARMA 21 1947 An overview of the experimental investigation of the hydromechanical behavior of an X shaped underground intersection in the Callovo-Oxfordian claystone Cornet J.S. ; Plua C. ; Jaber J. ; de La Vaissière R. ; Zghondi J. ; Renaut C. and Armand G. Andra, R&D Division, Meuse/Haute-Marne...

.... The simulation results show that the natural fracture density does not directly control the breakout area around the wellbore. Intersection of fractures and borehole, increase in fluid seepage, and large in-situ stress ratio aggravate borehole instability. Increasing wellbore pressure without considering fluid...

... goals and to understand what benefits additional measurements could provide for improving decision making. hydraulic fracturing experiment 2 frash injection well Upstream Oil & Gas natural fracture complex reservoir fracture intersection geothermal reservoir orientation likelihood...

... intersection planar failure fracture Claystone photogrammetry discontinuity clarksburg claystone Pennsylvania 1 1. INTRODUCTION This paper presents the mid-2017 execution, analysis, and results of our Unmanned Aerial Vehicle (UAV) data acquisition flight and data analysis of the Glassport road- cut...

... crosscut pillar intersection numerical model validation niosh-instrumented pillar US government displacement slaker Murphy stress concentration strength Institute preliminary model loading cross section 1. INRODUCTION In response to recent large-scale pillar collapses, as well...

... with respect to the principal stresses. This mixed-mode failure is triggered especially upon intersection of these natural fractures with hydraulic fractures and the fracturing fluid infiltration into the natural fractures. Among various influential parameters on the fracture intersection behavior, hydraulic...

... entries. structural geology Reservoir Characterization engineering property data mining Illinois metals & mining displacement shale development entry setup room fault plane rock mass engineering property gate entry longwall face rock mass pillar Chugh face area intersection...

... extensometer sandstone procedure panel face study site intersection proceedings international conference pillar response pillar abutment pillar gateroad longwall face Morgantown longwall panel 1. INTRODUCTION The longwall mining method continues to lead underground coal mining production...

.... Convergence of the roof in excess of 5 cm is present in two intersections, one of which was also measured with a Miner's Helper, and appears to be correlated with adjacent development. The scanning program able to consistently and effectively track and measure a variety of displacements related to high stress...

... and efficiently characterized during hydro-fracturing process (Xiao et al., 2017). The complex behavior created by HF-NF interaction was by virtue of merging and/or branching of the HFs upon intersecting with NFs in unconventional reservoirs. The mechanics of hydraulic fracturing has been extensively presented...

... for Canadian deep mines, coupled with site-specific field observations, is employed to justify the support design for large-span intersection developments with a focus on mitigating dynamic loading hazards. Artificial Intelligence Reservoir Characterization rockfall rockmass hazard intersection...

..., and proactive risk management, roof falls in longwall headgates can be prevented. metals & mining concentration horizontal stress concentration risk management immediate roof roof fall intersection reservoir geomechanics cutter horizontal stress longwall headgate Reservoir Characterization...

... Upstream Oil & Gas ground closure hangingwall support tendon stability number case study intersection mining method excavation determination chamber excavation deformation 1. INTRODUCTION The development of longhole stope mining methods enhanced the mechanization and increased...

... ABSTRACT: Time-dependent roof deformation around coal mine intersections has received little importance in the past. A comprehensive understanding of the effect of time is critical to eliminate the potential for roof falls around intersections and the associated risk to worker safety...

... into the free excavation space formed by excavation surfaces. The moving vector should belong to a vector set determined by free excavation surfaces which is defined as the excavation domain, reflecting the constraints from other blocks. If the two sets intersect, the identified block is removable. When dealing...

... horizontal stress metals & mining Upstream Oil & Gas Rock mechanics application excavation support system intersection extension zone Roof Stability extension Kaiser reservoir geomechanics strength confinement stability brittle-failure criterion numerical model 1. INTRODUCTION...