Petrographic Charcaterization of microporosity in the Organic-Rich Carbonate Hanifa Fromation, Jafurah Basin, Saudi Arabia

Mohamed O. Abouelresh*, Mohamed Mahmoud

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

Abstract

A comprehensive petrographic characterization has been conducted on the microporosity of the organic-rich carbonate Hanifa Formation in Jafurah Basin, Saudi Arabia. Hanfia Formation composed of organic-rich muddy limestone with more than 90 % carbonate minerals content. Based on XRD analysis, the investigated samples are consisting of calcite (87 wt.%), anhydrite (9 wt.%) and less than 1 wt.% of quartz, illite, pyrite and dolomite. Total organic carbon reaches up to 5.46 wt. % and yielding Kerogen (S2) 5.09 mg/g rock, while the free hydrocarbon content (S1) is 5.36 mg/g rock. The kerogen type is type II and the thermal maturity index is 1.28. Based on the hosting element, microporosity in Hanifa Fm. can be categorized into three groups: framework, solid bitumen and intraparticle pores. A key observation of this study is that pore types in Hanifa Formation vary between framework which accounts for 25% of the measured pore areas while the intraparticle porosity only contribute with about 15 %. The organic-hosted porosity is significantly contribute to the porosity of Hanifa Formation with up to 60 % of the measured pore areas.

Original languageEnglish
Pages (from-to)3540-3542
Number of pages3
JournalSEG Technical Program Expanded Abstracts
Volume2022-August
DOIs
StatePublished - 15 Aug 2022
Event2nd International Meeting for Applied Geoscience and Energy, IMAGE 2022 - Houston, United States
Duration: 28 Aug 20221 Sep 2022

Bibliographical note

Publisher Copyright:
© 2022 Society of Exploration Geophysicists and the American Association of Petroleum Geologists.

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology
  • Geophysics

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