... wellbore integrity wellbore stability clastic rock rock type geological subdiscipline mogi-coulomb criterion breakdown operation plane drilling leakage mpa criteria tensile fracture shear breakdown breakout journal ARMA 24 0105 Development and Validation of a New Wellbore Stability...

... fracture staudtmeister geotechnical engineering criteria gas storage cavern numerical calculation modification rock mechanical design infiltration fracture ARMA 24 0145 Modification of the Rock Mechanical Design of Salt Caverns on the Basis of Recent Research Dirk Zapf1*, Feline Körner1, Bastian...

..., the criteria for judging hydrothermal reservoir stability were proposed and the wellbore-reservoir coupling model was established. Finally, the influence of different reservoir and perforation parameters on sand production was analyzed. The results show that: 1) the interface between the borehole wall...

... for the gradients of this misfit function with respect to the parameters of Mohr-Coulomb failure criteria defining the intact and post-peak behaviour of the rockmass. Determining these gradients requires a single modelling simulation regardless of the number of model parameters; this affords a significant reduction...

... extraction, and enabling geothermal development in areas once considered unsuitable such as geological formations with low permeabilities (Chellal et al., 2022). artificial intelligence geologist geological subdiscipline production criteria interpolation application geothermal energy production...

... and the criteria for the decision between longitudinal (axial to the wellbore) and transverse (orthogonal to the wellbore) HFs, as displayed on Fig. 1. Multiple transverse-HF initiations from horizontal wells is the desired outcome of modern-day reservoir stimulation operations. This is despite...

... or long term. Noncompliance with slope design criteria, which may be a contributing factor in slope instability, potentially creates an unsafe working environment and has a negative impact on mine performance. Achieving an optimized balance between open-pit slope performance and financial objectives...

... proppant is proposed in reservoir stimulation. 1 INTRODUCTION The American Petroleum Institute (API) defines criteria for the classification and quality control testing of sand used in hydraulic fracturing. These metrics include sieve analysis for size distribution, sphericity and roundness (minimum...

... ABSTRACT: Predicting the appropriate mud density in drilling operations is crucial in the construction of oil and gas wells, in order to mitigate the drilling problems and improve the drilling efficiency. This paper investigates ten failure criteria in directional wells drilled through...

... in a continuing effort to provide users of the criterion with a database of rock type-specific "s" values. 1. INTRODUCTION There are various failure criteria that exist in rock engineering for the evaluation of the performance of underground excavations in rock. Two frequently used failure criteria...

... description of the mechanical behavior of cement sheath becomes increasingly important. This paper presents an investigation about the failure criteria of cement stone. In order to predict the strength characterization of different cement stones, a series of uniaxial tension and triaxial compression...

... stress that led to the development of the measured breakout. Most commonly, Mohr-Coulomb failure criterion is used which disregards the influence of intermediate stress on strength. Different polyaxial criteria have been proposed to include this effect. Here, we first review selected polyaxial criteria...

..., but the influence of different rock failure criteria on the calculation results has always been neglected. Therefore, according to the linear poroelastic mechanics theory and different failure criteria of rock, the maximum horizontal stress in southwest Sichuan of China is calculated using the wellbore breakout...

... equilibrium mmscfd ft frictional resistance porosity coefficient criteria equation sanding depletion effect sandface numerical procedure quantifying flux-induced sanding ARMA 22 0128 Quantifying Flux-induced Sanding in Oil and Gas Wells Yuxing Xiao, Xiaoxian Zhou and Hans H. Vaziri BP America...

... discontinuities were numerically designed. The mechanical performance of these discontinuities was initially assessed using published failure criteria that depend on the properties of the rock and the discontinuity morphology obtained by visual and 3D image analysis. Finally, triaxial direct shear tests under...

...) compression, axisymmetric (conventional triaxial) extension, and multiaxial strength tests. The data are fitted to linear and nonlinear failure criteria: Paul-Mohr-Coulomb (PMC), a generalized linear criterion containing all three principal stresses; Hoek-Brown, a popular nonlinear criterion containing major...

... ABSTRACT: In Japan, the determination of support patterns (CI, CII, DI, DII) in NATM tunnels plays an important role in the construction of mountain tunnels. Conventional methods of rock mass evaluation include grading the rock by experienced experts with a point-based system in 9 criteria...

... logic artificial intelligence selection boualam fiscret software criteria system table ARMA 22 320 A Screening Methodology Using Fuzzy Logic to Improve the Well Stimulation Candidate Selection Mouedden, N., Laalam, A., Rabiei, M., Merzoug, A., Ouadi, H., Boualam, A., Djezzar, S. University...

... that the Brittleness Indices that are derived from the failure criteria are more reliable in capturing the brittle/ductile behaviour and therefore predicting fracability of these rocks. The breakdown pressures obtained in the experiments can be reliably predicted from the analytical expressions of the limit pressure...

... was studied based on the full stress-strain curve observed in the synthetic sandstone. Also, the synthetic rockburst-susceptible rock suitability is evaluated using several empirical criteria, such as strength brittleness index, burst energy coefficients, a brittleness index modified, and a strain energy...