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Keywords: empirical equation
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Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1465
..., Seismic, Lab function of total porosity, and the best equation for angle Properties K Bulk modulus MPa test of internal friction is a function of total porosity and shale (Dynamic & Static) MPa In-situ MPa Lab test, Well logs volume. The established empirical equations for static Stress G Shear modulus...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1907
... by the static Young s Modulus which is determined based on the knowledge of the dynamic Young s Modulus (Edyn). Nowadays, Edyn is estimated from the shear and compressional velocities and bulk density, which in many cases may not be available. This study introduces an empirical equation developed based...
Proceedings Papers

Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-1064
.... To overcome this issue, several empirical equations are usually employed. However, these existing equations are suitable for certain types of rock masses posing limitations. Therefore, this paper intends to investigate alternatives for estimating the Em using adaptive techniques namely, the Adaptive Neuro...
Proceedings Papers

Paper presented at the 50th U.S. Rock Mechanics/Geomechanics Symposium, June 26–29, 2016
Paper Number: ARMA-2016-662
... and economic constraints. Pillar design process involves estimating the pillar stress and the pillar strength and sizing the pillar until an acceptable margin of safety (ratio of pillar strength to pillar stress) is attained. metals & mining pillar strength empirical equation Reservoir...
Proceedings Papers

Paper presented at the 49th U.S. Rock Mechanics/Geomechanics Symposium, June 28–July 1, 2015
Paper Number: ARMA-2015-679
... show a satisfactory agreement with the general Obert and Duvall empirical equation. A major limitation of using Obert and Duvall empirical equation was revealed and a methodology was proposed to address this shortcoming. In conclusion, an empirical pillar strength equation has been proposed to evaluate...
Proceedings Papers

Paper presented at the 46th U.S. Rock Mechanics/Geomechanics Symposium, June 24–27, 2012
Paper Number: ARMA-2012-431
... not be copied. The abstract must contain conspicuous acknowledgement of where and by whom the paper was presented. ABSTRACT: Barton suggested 1% displacement as a rule-of-thumb for peak shear displacement of fractures ( peak=0.01L). In addition, he introduced an empirical equation for peak based on JRC...
Proceedings Papers

Paper presented at the The 21st U.S. Symposium on Rock Mechanics (USRMS), May 27–30, 1980
Paper Number: ARMA-80-0103
... drilling operation drilling rate empirical equation drill hole RIHN drifter drill surface area coefficient determination Reservoir Characterization equation graph strength RIHN value penetration rate rock type drop hammer Upstream Oil & Gas Shore Hardness prediction...

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