WITHDRAWN: Fluid bearing identification in carbonate reservoir rocks using resistivity logs and dynamic data

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Abstract Electrical resistivity logs are effectively used for fluid type recognition in different types of sedimentary rocks for reservoir evaluation and consequently reserve estimation in petroleum industry. For heterogenous carbonate reservoir rocks applying wireline logs usually faces challenges and uncertainty such as interpreting the microstructure, pore system and fracture distribution. In this study raw data from four wells of various geological heterogenity in terms of rock fabric and fluid content in the Zagros Folded Zone fields have been used to establish the fluid type based on the deep-latero resistivity logs and drill stem test results. The rock microstructure parameters including clay contents, lithology, organic matter, fracture style and pore structures all influence the resistivity logs and subsequently the reading electrical current within carbonate rock types. The magnitude of resistivity log 125 Ω.m can be considered as the cut-off value for distinguishing water bearing from hydrocarbon bearing zone. However, because of the lithological variations, the isotropy of carbonate rocks, the fracture distribution and the relationship of these geological features to fluids, the resistivity of water bearing stratigraphy can still deliver a high deflection and hydrocarbon type bearing rocks cannot always be ascertained based only on the statistical analysis from the raw data of deep-latero resistivity logs.
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Therefore, the authors do not wish this work to be cited as a reference. Questions should be directed to the corresponding author. Editorial notes are used to provide important context regarding the topic of a preprint or to alert readers to potential issues concerning that preprint or a downstream publication associated with it. For more information on editorial notes, see our Editorial Policies . Abstract The full text of this preprint has been withdrawn, as it was submitted in error. Therefore, the authors do not wish this work to be cited as a reference. Questions should be directed to the corresponding author. Full Text The authors have withdrawn this preprint from Research Square. Additional Declarations The authors declare no competing interests. Cite Share Download PDF Status: Posted Version 2 posted You are reading this latest preprint version Show more versions Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. As a division of Research Square Company, we’re committed to making research communication faster, fairer, and more useful. We do this by developing innovative software and high quality services for the global research community. Our growing team is made up of researchers and industry professionals working together to solve the most critical problems facing scientific publishing. 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