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Biot

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Proceedings Papers

Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, July 26–28, 2021
Paper Number: URTEC-2021-5200-MS
... Abstract Estimates of in situ stresses and their changes upon production can be greatly influenced by the choice in poroelastic parameter values such as Biot coefficient and pore compressibility. In the determination of these parameters, grain compressibility and its anisotropy have emerged...
Proceedings Papers

Paper presented at the SPE Latin American and Caribbean Petroleum Engineering Conference, July 27–31, 2020
Paper Number: SPE-198959-MS
... Eq.11 is inserted into Eq. 8 to obtain: (12) R t = a R w ∅ - m + n 2 - 3 n [ 250 ] - n { ( e ( ∝ - 0 . 60685 0.08258 ) 2 . 665 ) 1 / 0 . 45 × 100 } n / 2 Figure 2. Biot...
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...
Proceedings Papers

Paper presented at the 54th U.S. Rock Mechanics/Geomechanics Symposium, June 28–July 1, 2020
Paper Number: ARMA-2020-1745
... 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 significance...
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
... Abstract The objective of this paper is to develop an easy to use correlation for estimating Biot coefficient. This is important as Biot coefficient plays an important role in solving many practical petroleum engineering problems, including for example, design of hydraulic fracturing jobs...
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-2017-17496120
... 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 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 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
... 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, and one...
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...
Proceedings Papers

Paper presented at the 48th U.S. Rock Mechanics/Geomechanics Symposium, June 1–4, 2014
Paper Number: ARMA-2014-7022
... under in-situ conditions, thus ensuring the success of hydraulic fracturing. Biot's coefficient is one of the key poroelastic parameters for calculating the effective stress for creating artificial fractures in the shale formations. In this study, we propose anew method to measure the Biot's coefficient...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2013, October 23–26, 2013
Paper Number: ISRM-EUROCK-2013-048
... Upstream Oil & Gas porous medium experimental determination reservoir geomechanics gustkiewicz Pore Fluid coefficient flow in porous media pore pressure specimen effective stress moduli Reservoir Characterization Fluid Dynamics porosity Byerlee Biot coefficient sandstone...

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