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AuthorKhadri, Syed Oubee
AuthorHussein, Ibnelwaleed A.
AuthorSadooni, Fadhil
AuthorShirif, Ezeddin
Available date2024-08-05T05:08:12Z
Publication Date2023
Publication NameScientific Reports
ResourceScopus
ISSN20452322
URIhttp://dx.doi.org/10.1038/s41598-023-48450-5
URIhttp://hdl.handle.net/10576/57428
AbstractTight Carbonate reservoirs are regarded as one of the most complex reservoir formations due to the heterogeneity and complexity of their mineral composition, pore structure, and storage model. It is uncommon to study the implementation of a transport model appropriate for such formation. Recent studies focused on tight reservoirs and developed models for shale or coal bed methane reservoirs. This study proposes a single and dual-porosity transport model that solely considers the tight matrix and acidized region to shed light on the transport models for tight carbonates. The numerical model included the effect of transport mechanisms such as Knudsen diffusion, desorption, and viscous flow. The proposed transport model includes the apparent permeability model defining these transport mechanisms. Finite element method analysis was conducted on the numerical model using COMSOL Multiphysics. Due to the presence of nanopores in both shale and tight Carbonate, transport models proposed for the former can be utilized to determine the fluid flow behavior in the latter. The adsorption isotherm, rock density, pore structure, porosity, and permeability of the tight carbonate reservoir, which contrasted with the shale results, were the defining features of the reservoir used in the transport model. The dual-porosity model yielded a peak production of 104,000 m3/day, whereas the proposed model represents a shallow production rate from the single-porosity reservoir. The results were validated with an analytical solution proposed in the literature. Based on the literature findings and the production profile, the desorption did not play a significant role in the total production due to calcite's low affinity towards CH4.
SponsorThe authors would like to acknowledge the support of the Qatar National Research Fund (a member of the Qatar Foundation) through Grant # NPRP11S-1228-170138 and NPRP12S-0305-190235. The findings achieved herein are solely the responsibility of the authors.
Languageen
PublisherNature Research
Subjectcalcium carbonate
carbonic acid
carbonic acid derivative
coal
methane
mineral
adsorption
apparent permeability
controlled study
density
desorption
diffusion
finite element analysis
fluid flow
gas
isotherm
nanopore
nonhuman
permeability
pharmaceutics
porosity
rock
TitleCFD estimation of gas production in tight carbonates using single and dual-porosity models
TypeArticle
Issue Number1
Volume Number13
dc.accessType Open Access


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