... flow in porous media coal permeability geological subdiscipline coefficient characteristic formula ARMA 23 389 Stress-dependent characteristics of coal permeability in gasification zone of underground coal gasification Author1, Yufeng Zhao; Author2, Zhen Dong*; Author4, Yanpeng Chen; Author5...

... university asia government modeling & simulation reservoir geomechanics taper cutter strength wellbore design relation curve well logging cutter formula numerical simulation model trigonal cutter geostress bit design beijing rock mechanical property log analysis geological subdiscipline...

... asia government united states government china government artificial intelligence deep learning machine learning accuracy data enhancement formula generation model countermeasure network vdl-wgan upstream oil & gas neural network variable density image adversarial network...

... government reservoir characterization geology reservoir geomechanics geologist wellbore design criterion upstream oil & gas wellbore integrity geological subdiscipline breakout analysis triaxial compression failure criterion criteria horizontal stress formula haimson intermediate stress...

... pillar strength united states government stability strength coal pillar international journal correspond width-to-height ratio formula mining science metals & mining concrete specimen dimension stress-strain curve interior angle laboratory result ARMA 23 0145 Preliminary laboratory...

... under the condition of slim hole drilling, and the drillstring rotation speed is optimized under the condition of maximum open hole elongation. drilling operation rotation drillstring rotation speed optimization calculation formula upstream oil & gas elongation open-hole elongation...

... fracturing fluid fracturing materials reservoir characterization hydraulic fracture fracture characterization proppant proppant dune formula seepage resistance placement triangular proppant dune coefficient porosity proppant placement simulation zhang fracture hydraulic fracturing...

... of fault slip probability caused by hydraulic fracturing. The existing calculation formulas are considered in relatively simply factors. Based on the Mohr-Coulomb criterion, this paper further considered the influence of local in-situ stress changes and seepage pathways, and established a new slip risk...

... hydraulic fracturing complex reservoir fracturing materials shale oil fracture closure reservoir model ii fracture proppant modeling & simulation conductivity reduction permeability formula geomechanics symposium reservoir fracture shale reservoir productivity displacement ARMA 22...

... & gas identification reservoir characterization algorithm journal drilling real-time identification formula engineering wang coefficient petroleum science accuracy node learner correlation formation lithology ARMA 22 2310 A Novel Method for Real-time Identification of Formation...

... & gas conductivity journal changqing oilfield formula proppant experiment permeability technology fracturing fluid fracturing materials gas-liquid alternation reservoir engineering hydraulic fracturing resistance fracture conductivity proppant conductivity liquid conductivity...

... efficiency when identifying the propagation mode of fracture. complex reservoir communication proportion fracture experiment characteristic acid erosion fracture propagation morphology hydraulic fracturing fluctuation formula initiation conclusion diagram upstream oil & gas reservoir...

... displacement upstream oil & gas shale gas enhanced recovery formula characteristic interface united states supercritical co filtration viscosity yang yongfei software calculation ARMA 22 369 Micro model establishment and numerical simulation of supercritical CO2 filtration in porous media...

... of reservoir leakage. At present, the main solution is fracture plugging to improve the formation pressure bearing capacity. A comprehensive index formula of lost circulation risk assessment was constructed to reflect the level of lost circulation risk(Lu et al., 2020). Tan et al. (2021) believe...

... propagation journal pipe torque equation directional drilling coefficient wob fracture accident upstream oil & gas drillstring design concentration coefficient formula mpa china university relationship fracture toughness engineering diameter extended-reach drilling ARMA 22 0541...

... wellbore design wellbore integrity characteristic drilling fluids and materials borehole drilling operation reservoir characterization borehole instability simulation mechanism failure characteristic formula constitutive equation strength constitutive relation upstream oil...

... hydraulic fracturing metals & mining reservoir characterization thickness microseismic event wellbore design structural geology formula development height water-conducting fissure zone water-conducting fracture zone modeling & simulation fracture zone key strata china coal...

..., due to great restrictions on drilling and coring operations. Some scholars use mortar to simulate formation rocks, however, their mechanical properties are quite different from those of formation rocks. In this paper, we present formula of high-performance mortar that can simulate rock mechanical...

... sanding. When the 1.4 of the volume modulus and shear modulus of the rock, x 104 MPa B 2.0×104 MPa, the formation produces and its calculation formula is: sand. When B 1.4×104 MPa, the formation is seriously sanding. S=K G According to the prediction results of the sand production (3) pre-index method...

... by (Equation) where summation over repeated indices is assumed here and in the following. The tensorial B in principle relates all stress components to the induced pore pressure. reservoir geomechanics formula implication transverse isotropy Reservoir Characterization elastic anisotropy pore...