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AuthorSadooni, F.N.
AuthorAl-Kuwari, H. Al Saad
AuthorSakhaee-Pour, A.
AuthorMattar, W. S.
Available date2023-09-07T08:05:43Z
Publication Date2023-06-01
Publication NameCarbonates and Evaporites
Identifierhttp://dx.doi.org/10.1007/s13146-023-00869-7
CitationSadooni, F. N., Al-Kuwari, H. A. S., Sakhaee-Pour, A., & Mattar, W. S. (2023). Microporosity evolution and destruction in the Jurassic Arab D reservoir, Qatar. Carbonates and Evaporites, 38(2), 45.‏
ISSN08912556
URIhttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85153061700&origin=inward
URIhttp://hdl.handle.net/10576/47323
AbstractCore samples were collected from three wells, one onshore and two offshore, from Qatar’s Upper Jurassic Arab D reservoir. The samples were subjected to multiproxy petrographic and chemical analyses to identify their micro- and nanoporosity types and understand their evolution and destruction. Based on the petrographic and petrophysical properties of studied rocks, the Arab D succession was divided into seven rock types. Primary microporosity includes intergranular and interplanar, while secondary types include vuggy, intercrystalline, moldic, dissolution, pyrite displacement, microfracture, and microbial boring. Primary micropores were found mainly between the micrite grains in the lime mudstone facies, between the grains or the plates of clay minerals. Secondary micropores result from open and closed diagenetic systems. The open diagenetic system led to the development of dissolution and moldic micropores, while the closed system created pyrite displacement and boring porosity. Mechanical stress due to crystal growth or displacement generated microfractures. Micropores were destroyed either by cementation, clay minerals growth, dolomitization, or microbial pustular overgrowth. Microporosity was important in quantity and varied in nature in the mud-supported rocks. They are similar to macropores in grain-supported sediments but of less importance. The complex lithology of the studied rocks has significantly influenced the development and destruction of the porosity system of the Arab Formation.
SponsorThe chemical analyses were conducted at the Central Laboratory Unit, Qatar University. We are grateful for their continuous support and professionalism. We thank the management and technicians of the Gas Processing Center (GPC) and the Center for Advanced Materials (CAM), Qatar University for the XRF and XRD analyses. Thanks to Thomas Seers and Ibrahim Almaghrabi (Texas A&M, Doha Campus) for the thin section preparation. David Marioni read the original manuscript and made many valuable amendments. This research is supported by Qatar Foundation through Grant # NPRP11S-0109-180241.
Languageen
PublisherInstitute for Ionics
SubjectArab Formation
Carbonates
Jurassic
Microporosity
Qatar
TitleMicroporosity evolution and destruction in the Jurassic Arab D reservoir, Qatar
TypeArticle
Issue Number2
Volume Number38
dc.accessType Open Access


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