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Tuscaloosa Marine Shale: Seal or Source? Petrophysical Comparative Study of Wells in SE Louisiana and SW Mississippi

Author

Listed:
  • Cristina Mariana Ruse

    (Department of Petroleum Engineering, University of Louisiana at Lafayette, Lafayette, LA 70504, USA)

  • Mehdi Mokhtari

    (Department of Petroleum Engineering, University of Louisiana at Lafayette, Lafayette, LA 70504, USA)

  • Lenissongui Yeo

    (Department of Mechanical & Aerospace Engineering, Oklahoma State University, Stillwater, OK 74078, USA)

Abstract

The Tuscaloosa Marine Shale (TMS) is a versatile Late Cretaceous shale formation present in central and SE Louisiana and SW Mississippi, which drew attention because of the various roles played within the Tuscaloosa Group. In this paper, it is debated whether the Tuscaloosa Marine Shale can act as a source, reservoir, or seal all throughout the shale play or only in certain areas. Well log and core data from Adams County, Mississippi, are compared to data from East Feliciana Parish in Louisiana. Conclusions were drawn based on the results of well log analysis, X-ray Diffraction (XRD), porosity–permeability measurements, programmed pyrolysis, and fracture analysis. It was shown that the Tuscaloosa Marine Shale interval in SE Louisiana consists of important amounts of calcite, exhibits multiple natural fractures, has porosity values as high as 9.3%, and shows a TOC content of up to 2.8 wt%. On the other hand, samples from a well at the Cranfield field, MS, are characterized by considerably lower TOC values of around 0.88 wt%, porosities between 0.33% and 4%, and no serious fracturing. The formation demonstrates better reservoir and source potential in SE Louisiana and reliable CO 2 sealing capacity in SW Mississippi. The analysis presented in this paper represents a holistic approach to the characterization of shale formations, is applicable to other plays around the world, and can be used as an integral part of CO 2 sequestration or hydraulic fracturing programs.

Suggested Citation

  • Cristina Mariana Ruse & Mehdi Mokhtari & Lenissongui Yeo, 2022. "Tuscaloosa Marine Shale: Seal or Source? Petrophysical Comparative Study of Wells in SE Louisiana and SW Mississippi," Energies, MDPI, vol. 15(9), pages 1-14, May.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:9:p:3417-:d:810325
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    References listed on IDEAS

    as
    1. Natasha Trujillo & Dylan Rose-Coss & Jason E. Heath & Thomas A. Dewers & William Ampomah & Peter S. Mozley & Martha Cather, 2021. "Multiscale Assessment of Caprock Integrity for Geologic Carbon Storage in the Pennsylvanian Farnsworth Unit, Texas, USA," Energies, MDPI, vol. 14(18), pages 1-26, September.
    2. Silvana Fais & Giuseppe Casula & Francesco Cuccuru & Paola Ligas & Maria Giovanna Bianchi & Alberto Plaisant & Alberto Pettinau, 2019. "A Contribution to the Geological Characterization of a Potential Caprock-Reservoir System in the Sulcis Coal Basin (South-Western Sardinia)," Energies, MDPI, vol. 12(23), pages 1-37, November.
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