In recent years, Rosneft Oil Company has been increasingly involved in the development and operation of reservoirs with significant heterogeneity of poroelastic properties, with significant uncertainty of mechanical properties associated with their low level of study. In the Rosneft laboratory complex approaches to the geomechanical study of rocks have been sufficiently standardized (historically) in order to study their deformation and strength properties. The data obtained using the applied techniques contribute to increasing the efficiency of scientific support for the development of oil and gas fields at all stages of their life cycle. The data obtained using the applied techniques contribute to increasing the efficiency of scientific support for the development of oil and gas fields at all stages of their life cycle. The most general and informative in domestic practice is a comprehensive method of constructing rock strength certificates based on determining the strength limits of rocks under various conditions, and giving the necessary minimum of information about the strength and deformation properties of rocks suitable for further use for geomechanical and hydrodynamic modeling. However, one of the most important parameters used both in modeling and in calculating the initial data for geomechanical laboratory studies, the poroelasticity coefficient (Biot), requires a series of long-term separate studies. In order to obtain the necessary calculated data, according to the above methods, it is necessary to determine the deformation characteristics of the core material in various load distribution conditions, which is associated with the complication of the hardware part of the experiment, as well as the presence of a subjective view of the operator processing experimental data. The article presents an overview of the poroelasticity coefficients obtained from laboratory studies to determine the strength properties of the core.
References
1. Churkov A.V., Rogozin A.A., Yatsenko V.M. et al., Aspects of calculating the poroelasticity coefficient for productive formations in the West Siberian oil and gas province (In Russ.), Neftyanoe khozyaystvo = Oil Industry, 2022, no. 10, pp. 10-13, DOI: https://doi.org/10.24887/0028-2448-2022-10-10-13
2. Coussy O., Poromechanics, John Wiley & Sons Ltd, 2004, 298 p.
3. Fjaer E., Holt R.M., Horsrud P. et al., Petroleum related rock mechanics, Elsevier B.V., 2008, 491 p.
4. Franquet J.A., Abass H.H., Experimental evaluation of Biot’s poroelastic parameter. Three different methods, Rock Mechanics for Industry: edited by Kranz A., Smeallie S., Rotterdam: Balkema, 1999.
5. Zhou X., Vachaparampil A., Ghassemi A., A combined method to measure Biot’s coefficient for rock, Proceedings of 49th U.S. Rock Mechanics/Geomechanics Symposium, San Francisco, CA, USA, 23-26 June 2015, Paper no. ARMA-2015-584.
