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Fractures as Stress Raisers in Rock Mass in Oil and Gas Production

  • ROCK FAILURE
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Journal of Mining Science Aims and scope

Abstract

The spotlight is on the stress patterns in oil and gas reservoirs and in enclosing rock mass containing displaced fractures (disjunctive cleavages). The mathematical modeling finds out that with the decreasing reservoir pressure in rock mass subject to elastic deformation, the shearing stress raisers arise on the surfaces of displaced fractures and can make an initially impermeable fracture to become fluid-conductive. Creeping widens the fractures, which also contributes to hydrodynamic connection between a pay zone and the upper- and low-lying permeable strata. This process of formation of the permeable channels in rock mass can be an explanation for the mechanism of oil and gas reservoir infeed with fluid flows from the lower-lying fluid-bearing strata.

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Authors and Affiliations

  1. Institute of Oil and Gas Problems, Russian Academy of Sciences, 119333, Moscow, Russia

    A. M. Svalov

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  1. A. M. Svalov
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Correspondence to A. M. Svalov.

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Translated from Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, 2022, No. 5, pp. 63-69. https://doi.org/10.15372/FTPRPI20220506.

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Svalov, A.M. Fractures as Stress Raisers in Rock Mass in Oil and Gas Production. J Min Sci 58, 754–759 (2022). https://doi.org/10.1134/S1062739122050064

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  • DOI: https://doi.org/10.1134/S1062739122050064

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