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Keywords: principal stress
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Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1241
... ABSTRACT: We carried out a geomechanical study of three, co-located wells in the DJ Basin of Colorado, one each in the Niobrara A, Niobrara C and Codell sandstone, to investigate how stress variations of the least principal stress with depth affect vertical hydraulic fracture growth and shear...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1731
... hydraulic fracturing coal seam gas artificial intelligence coal bed methane re-fracturing coalbed methane wellbore design reservoir simulation gas production high medium selection minimum horizontal principal stress structural geology volumetric strain qinshui basin reservoir characterization...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1850
... ABSTRACT: In the hydraulic fracturing method for measuring the rock stress, the maximum and minimum principal stresses and their directions in the orthogonal plane of the borehole axis can be obtained. Among these three parameters, the direction of the maximum and minimum principal stress can...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1322
... initial flaw fluid pressure circular wellbore inclination angle boundary condition stress difference upstream oil & gas dual boundary element method lubrication equation complex reservoir regime boundary element method fluid viscosity principal stress integral equation equation...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1366
... ABSTRACT: We predict pore pressure and stresses from seismic velocity over a volume around a salt dome in Green Canyon 955, Gulf of Mexico. The salt dome significantly changes the magnitude and orientation of principal stresses in surrounding rocks. To account for these changes, we use...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1999
... fracture perpendicular to the least compressive principal stress. The classical HTPF method utilizes a combination of datasets obtained at multiple depths and relies on the homogeneity and linear increase of the in-situ stress with depth (Cornet and Valette, 1984), a condition unlikely to be met...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1073
... , where σ min is the minimum principal stress at the base of the caprock. In most cases, this 80% safety factor safeguards the SAGD injection pressure to always be lower than the σ min at the base of the caprock, and thus no tensile fractures can be initiated at the caprock. Through the statistical...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1836
... is made to study the effect of stiffness on the pore pressures at the near crack tip zone considering the cohesive zone model (CZM) with maximum principal stress criterion as the fracture propagation mechanism. It has been tried to incorporate the XFEM technique for fracture propagation...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-2064
... measurement concept. reservoir characterization criterion borehole horizontal stress mogi criterion upstream oil & gas borehole breakout prediction borehole surface strength rock mechanics zoback thermal breakout technology reservoir geomechanics mechanical test principal stress...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-2113
... fracturing (DCIF) on the borehole surface by controlling the rock's thermoelastic contraction. The primary objective of this research paper is to presents select results on the applicability of the DCIF technology and sensitivity of horizontal principal stress (S Hmax and S hmin ) magnitudes...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1195
... fracture duvernay principal stress source rock ARMA 21 1195 Shale fracability in Kaybob-Duvernay: a new approach based on plasticity behavior Erfan Sarvaramini GLJ Ltd, 1920 401 9 Ave SW, Calgary, AB, Canada Brad Culver B-32 Exploration, 650 635 8 Ave SW, Calgary, AB, Canada Christopher Clarkson...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-2127
... of borehole instability. Yin (2018) used multi-functional triaxial geophysical apparatus to analyze the effects of intermediate principal stress for yielded plastic zone around the borehole. Haimson (2004) studied the shape and micromechanics of vertical drilling borehole of two high-porosity sandstone under...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-2129
... distributions for the relevant parameters such as the drilling mud pressure, temperature, and the formation strength properties. The tool computes the resulting posterior joint probability distribution of the horizontal principal stresses. Using random samples from this posterior distribution the tool...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1854
... show that: (1) the production of old wells can reduce the horizontal principal stress difference, which in turn promotes stress reversal; (2) there are two types of stress reversal zones formed around old wells: discrete stress reversal zones and continuous stress reversal zone; (3) there are three...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1447
... technology. Different factors, such as pumping displacement, acid viscosity and initial fracture distribution, were considered in the numerical investigations. The numerical results showed that: 1) the horizontal maximum principal stress was larger than the vertical stress with a main direction along...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0098
... difficulty in replicating the gas transport characteristics of coal at the laboratory scale. There is limited research in this area. Thus, in this paper, we performed a series of permeability measurements on cubic high-rank coal samples using the true-triaxial apparatus. The principal stresses and flow...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0214
... fracture experimental result principal stress 1. INTRODUCTION The process of fracture initiation, propagation, coalescence, and re-bonding in host rocks is critical to the long-term performance of geologic storage facilities such as oil and gas storage and nuclear waste disposal (Zhu et al., 2015...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0222
... and the rotation of the principal stress, fracture distribution was obtained by logging data and FRACMAN numerical analysis was conducted. The results showed that: 1) two conjugate faults and fractures were recognized by FMI images and logging data, and the trends of the fractures were about NNW343° and NNE28...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0254
... ABSTRACT: Knowledge of the least principal stress within, above and below producing intervals is essential for determining fracturing procedures that limit vertical propagation of hydraulic fractures to the intended range of depths. To better understand the cause of varying stress magnitudes...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0268
... wellbore integrity Upstream Oil & Gas Reservoir Characterization Wellbore Design Engineering deep carbonate rock MPa laboratory experiment experimental data criterion hoek-brown criterion description method principal stress strength deformation modulus uniaxial compressive strength...

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