... stability simulation criterion Abstract Wellbore stability modeling has been known in the oil and gas industry and academia for a long time. The instability-related issues significantly impact field developments, especially in complex deep reservoirs. This instability can substantially jeopardize...

... drilling fluid chemistry deformation wellbore design drilling fluids and materials reservoir geomechanics compressive strength coal seam wang petroleum university invasion journal zhang cleavage plane experiment fracture poisson criterion new drilling engineering International...

... expression plug orientation upstream oil & gas criterion plasticity mpa bedding plane strength stability modified lade drucker prager alia strength characterization hollow cylinder International Geomechanics Symposium IGS-2022-48 Shale stability a discussion on lab strength testing...

... by Drucker-Prager criterion, and the linear Drucker-Prager criterion can be expressed as (Ma et al. 2022b), where, J2 = H1 + H2 J1 (2) H1 = H 2 = 6c cos 3(3 sin ) 2 sin 3(3 sin ) (3) J1 J 2 = = 1 3 ( 1 + 2 1 6 1 + 3) 2 )2 + ( 2 3 )2 + ( 3 1 )2 ] (4) where J1...

... usually determines the type of failure criterion used in wellbore stability modeling. This paper used the Drucker-Prager criteria for wellbore stability assessment. permeability wellbore design reservoir characterization upstream oil & gas wellbore integrity deformation structural geology...

... the obtained experimental data. These explicit FIP formulas provide useful estimations that can be applied in well stimulation design. wellbore integrity wellbore design criterion hydraulic fracturing upstream oil & gas formula initiation borehole drilling operation fracture initiation...

... that its mechanical properties are homogeneous and isotropic. From the results of uniaxial and triaxial compressive strength test (Fig. 2 and Fig. 3), it can be found that the UCS of the artificial core is about 35 MPa. The cohesion force fitted by the Mohr-Coulomb criterion is about 10.5 MPa...