Analyses of Source Rock Microstructural and Elastic Properties: Case Study on Bakken Shales

C. Onwumelu, I. Bouchakour, S. H. Nordeng, O. Kolawole

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations

Abstract

Source rocks that are organic-rich have varying mineralogical composition and complex rock fabric. In this study, we aim to characterize the immature and mature Bakken shale's microstructural and elastic properties using, respectively, advanced laboratory analysis, well log data, and rock physics modeling. We perform geochemical and source rock analysis to estimate the total organic carbon (TOC) and organic matter type, followed by an X-ray diffraction analysis (XRD) to obtain the mineral composition with the corresponding volume fractions. Then, we conduct a pore-scale study with NMR T2 and SEM imaging. Finally, we estimate the elastic properties using well log data and rock physics modeling. The results obtained from this study contribute to a better understanding of the source rock microstructural and elastic properties whether in the context of petroleum geology or engineering. Using our approach presented in this study, conclusions can be drawn that there is a need to investigate how the organic content and maturity impact the geophysical properties in source rocks.

Original languageEnglish (US)
Title of host publication55th U.S. Rock Mechanics / Geomechanics Symposium 2021
PublisherAmerican Rock Mechanics Association (ARMA)
ISBN (Electronic)9781713839125
StatePublished - 2021
Externally publishedYes
Event55th U.S. Rock Mechanics / Geomechanics Symposium 2021 - Houston, Virtual, United States
Duration: Jun 18 2021Jun 25 2021

Publication series

Name55th U.S. Rock Mechanics / Geomechanics Symposium 2021
Volume4

Conference

Conference55th U.S. Rock Mechanics / Geomechanics Symposium 2021
Country/TerritoryUnited States
CityHouston, Virtual
Period6/18/216/25/21

All Science Journal Classification (ASJC) codes

  • Geochemistry and Petrology
  • Geophysics

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