Importance of petrophysical properties obtained from rock samples at confining pressures for determining reservoir storage and flow capacities

Authors

DOI:

https://doi.org/10.5281/zenodo.17419337

Keywords:

Petrophysical characterization, confining pressure, core-log calibration, porosity, permeability, original oil in place, lithological heterogeneity, sensitivity analysis, reserve estimation, workflow optimization, net overburden pressure

Abstract

This study introduces a novel workflow for petrophysical reservoir characterization in two geographic areas (A, in South America and G, in North America), integrating core and log data under confining pressure conditions. Porosity and permeability were calibrated to improve the estimation of original oil in place (OOIP), showing reductions between 14% and 22% compared to traditional methods. Core-log calibration showed strong correlation in wells A, with discrepancies in wells G likely due to unmodeled lithological heterogeneities. Sensitivity analysis indicated high dependence on porosity and clay cutoffs. While further validation is recommended, the workflow improve accuracy, reduces execution time, enhances efficiency and provides a valuable tool for hydrocarbon exploration and production decision-making.

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Author Biographies

  • Edilio Atencio, Universidad de Oriente. Bolívar, Venezuela

    Ing. Geólogo, mención Recursos Petroleros. Universidad de Oriente. Bolívar, Venezuela

  • Rafael Panesso, Inter-Rock, C.A. Sucursal Colombia

    Ing. Geólogo. Mg. en Ingeniería de Petróleos con especialización en la caracterización petrofísica de yacimientos no convencionales. Inter-Rock, C.A. Sucursal Colombia

  • Alfonso Quaglia, Inter-Rock. LLC. Houston, USA

    Ing. Geólogo. Mg. en Geología y Mineralogía. PhD en Educación Superior. Inter-Rock. LLC. Houston, USA

  • Berenice Sandoval, Universidad de Oriente. Bolívar, Venezuela

    Ing. Geólogo. Universidad de Oriente. Bolívar, Venezuela

References

American Petroleum Institute (1998). Recommended practices for core analysis. Recommended practice 40. Second Edition. Sections 1-3. Washington, D.C.

Contreras, E. y García, M. (2007) Importancia de las actividades de planificación, corte, manejo y análisis de los núcleos de perforación de pozos petroleros. Boletín IIE, 75-85.

Cosentino, L. (2001). Integrated Reservoir Studies. Editions Technip, Paris.

Panesso, R. y Quaglia, A. (2002). Reserves re-estimation using scal to validate sw model from neural net processed old logs. La Ceibita field, Eastern Venezuela. Case Study. SCA (Society of Core Analysts), SCA 2002-47, California, USA.

Quaglia, A., Montilva, A., Porras, J. y Panesso, R. (2020). Análisis comparativo para los rangos de propiedades petrofísicas usando diferentes métodos de presión capilar de inyección de mercurio. Geominas.

Rider, M. (1996) The Geological interpretation of well logs (2nd Edition). Sutherland, Scotland. Editorial Rider-French Consulting Ltd.

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Published

2025-10-23

Issue

Vol. 1 No. 3 (2025): PetroRenova Indexed: Una revista dedicada al futuro de la energía

Section

Article

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Copyright (c) 2025 PetroRenova Indexed

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How to Cite

Importance of petrophysical properties obtained from rock samples at confining pressures for determining reservoir storage and flow capacities. (2025). PetroRenova Indexed, 1(3), 19-26. https://doi.org/10.5281/zenodo.17419337