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Biot

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Proceedings Papers

Paper presented at the 56th U.S. Rock Mechanics/Geomechanics Symposium, June 26–29, 2022
Paper Number: ARMA-2022-0502
... ABSTRACT: Biot coefficient α relates the increment of fluid content Δ ζ to an increment of bulk volume strain Δ ε v during the application of an increment of mean stress Δ P under drained conditions i.e. no change in cavity fluid pressure Δ p = 0. The Biot coefficient α is measured...
Proceedings Papers

Paper presented at the 56th U.S. Rock Mechanics/Geomechanics Symposium, June 26–29, 2022
Paper Number: ARMA-2022-0692
... material equations. For a regular lattice-type micromechanical model, we derive an exact formula for the Biot coefficient. As anticipated by experimental and numerical studies, the Biot coefficient embodies a nonlinear combination of the elasticity of the solid phase material and the geometry...
Proceedings Papers

Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, July 26–28, 2021
Paper Number: URTEC-2021-5200-MS
...URTeC: 5200 Investigation into the Fabric and Textural Controls over Effective Grain Stiffness for Accurate Biot Coefficient and Pore Compressibility Prediction Laurent Louis*1, Gregory Boitnott1, Erek Hutto2, Gustavo Carpio2, Michael Foster2; 1. New England Research, 2. Halliburton. Copyright 2021...
Proceedings Papers

Paper presented at the SPE Latin American and Caribbean Petroleum Engineering Conference, July 27–31, 2020
Paper Number: SPE-198959-MS
... Li et al.'s (2019) correlation is particularly useful when Biot coefficient is not available from experimental work. This is important as Biot coefficient plays significant role in the design of hydraulic fracturing jobs and estimation of in-situ closure stress on proppants. The proposed...
Proceedings Papers

Paper presented at the 54th U.S. Rock Mechanics/Geomechanics Symposium, June 28–July 1, 2020
Paper Number: ARMA-2020-1745
...ABSTRACT ABSTRACT Cement should more accurately be regarded as a poroelastic material rather than elastic material. Early researchers have measured the strengths and elastic properties of oil well cement, but Biot effective stress coefficient ( α ) remains an important unknown despite its...
Proceedings Papers

Paper presented at the 54th U.S. Rock Mechanics/Geomechanics Symposium, June 28–July 1, 2020
Paper Number: ARMA-2020-1048
..., the stress path ratio is a function of Biot's coefficient, dynamic and elastic properties of rocks, and reservoir shape. Stress path ratio can be estimated through analytical, experimental, and numerical approaches. In this study, the dynamic properties of the dry and brine-saturated cubic of Gosford...
Journal Articles
SPE Drill & Compl 35 (02): 151–163.
Paper Number: SPE-195359-PA
Published: 11 June 2020
...Qi Li; Roberto Aguilera; Heber Cinco-Ley Summary The objective of this paper is to develop an easy‐to‐use correlation for estimating the Biot coefficient. This is important because the Biot coefficient plays an important role in solving many practical petroleum‐engineering problems, including...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, September 15–20, 2019
Paper Number: SEG-2019-3205691
... ABSTRACT The Christoffel equations of an effective Biot medium are solved for a general harmonic plane waves and the three complex velocities obtained corresponding to the shear wave (SV), fast-P wave (fP) and slow-P wave (sP), together with their polarisations. We consider an incident...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-1648
... ABSTRACT: The poro-mechanical response of porous rocks is usually defined by Biot effective stress concept. Gas sorbing rocks such as coal do not however follow the conventional effective stress law because of swelling associated with gas adsorption and therefore, modification to the law...
Proceedings Papers

Paper presented at the SPE Western Regional Meeting, April 23–26, 2019
Paper Number: SPE-195359-MS
...Basic Data Deturnay and Chen (1993) published in a classic study Biot coefficient, porosity and permeability data for sandstone, marble and granite rocks. Cosenza et al. (2002) published the same type of data for argillaceous formations, limestone, sandstone and granite rocks. These two...
Proceedings Papers

Paper presented at the 2018 SEG International Exposition and Annual Meeting, October 14–19, 2018
Paper Number: SEG-2018-2993286
... ABSTRACT To approximate seismic wave propagation in double porosity media, the effective Biot governing equations with complex frequency dispersion characteristics are numerically solved using an upscaled poro-visoelastic approach. We compute the wavefields for solid particle velocity...
Proceedings Papers

Paper presented at the 2018 SEG International Exposition and Annual Meeting, October 14–19, 2018
Paper Number: SEG-2018-2997397
... ABSTRACT We study seismic wave propagation in porous media within the viscosity-extended Biot framework. For this purpose we have developed a numerical solver based on the finite element method. It is implemented in the frequency domain and makes use of absorbing boundary conditions in form...
Proceedings Papers

Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-1130
... coefficient “n” such that se=s c -nPp. reservoir geomechanics poroelastic coefficient porosity workflow stiffness Upstream Oil & Gas biot poroelastic coefficient horizontal stress tectonic strain effective pressure coefficient Reservoir Characterization pore pressure compressibility...
Proceedings Papers

Paper presented at the 2017 SEG International Exposition and Annual Meeting, September 24–29, 2017
Paper Number: SEG-2017-17559950
... ABSTRACT A Biot medium having a dense set of aligned fractures behaves as an effective transversely isotropic and viscoelastic (TIV) medium at the macroscale for wavelengths much larger than the average distance between fractures. In this work fractures within a Biot medium are represented...
Proceedings Papers

Paper presented at the 2017 SEG International Exposition and Annual Meeting, September 24–29, 2017
Paper Number: SEG-2017-17496120
... ABSTRACT At seismic frequencies and below, the standard theory for understanding the fluid dependence of seismic velocities is that due originally to Biot (1941) and Gassmann (1951) (“B-G”). However, despite its near-universal acceptance for over 65 years, its experimental support...
Proceedings Papers

Paper presented at the 2016 SEG International Exposition and Annual Meeting, October 16–21, 2016
Paper Number: SEG-2016-13972074
... A novel velocity prediction approach in double-porosity media using the Biot-Rayleigh theory Sam Zandong Sun, Yonggang Yang*, Dong Zhang, Zhishui Liu, Lab for Integration of Geology and Geophysics (LIGG), State Key Lab for Petroleum Resources and Prospecting, China University of Petroleum (Beijing...
Proceedings Papers

Paper presented at the 2016 SEG International Exposition and Annual Meeting, October 16–21, 2016
Paper Number: SEG-2016-13845283
... ABSTRACT The Biot-Willis coefficient is a key component associated with the effective stress field, where it represents the proportion of fluid pressure that counteracts the confining stress. To properly estimate the Biot-Willis coefficient, we require knowledge of the more fundamental...
Proceedings Papers

Paper presented at the SPE Hydraulic Fracturing Technology Conference, February 9–11, 2016
Paper Number: SPE-179162-MS
... Abstract This paper covers the methodology to derive all geomechanical properties (Young's modulus, Poisson's ratio and vertical/horizontal variable Biot constants as a function of rock type) for 13 different stress models. Minimum horizontal stress (Sh) is a key parameter controlling fracture...
Proceedings Papers

Paper presented at the 2015 SEG Annual Meeting, October 18–23, 2015
Paper Number: SEG-2015-5724663
... elastic constants in the stress-strain relations can be determined employing gedanken experiments that generalize those of Biot’s theory for single-phase fluids. The presence of capillary forces imply the existence four compressional waves, one fast and three slow, denoted Type I, II, III and IV waves...
Proceedings Papers

Paper presented at the 2014 SEG Annual Meeting, October 26–31, 2014
Paper Number: SEG-2014-0446
... measurable quantity bulk coefficient exceed unity equation 6 Skempton coefficient and its relation to the Biot bulk coefficient and micro-inhomogeneity parameter Tobias M. Mu¨ller, Earth Science and Resource Engineering Division, CSIRO, Kensington, Australia, Pratap N. Sahay, Department of Seismology...

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