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    Modeling and analysis of the acidizing process in carbonate rocks using a two-phase thermal-hydrologic-chemical coupled model

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    Name:
    Manuscript_CES_2019.pdf
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    6.950Mb
    Format:
    PDF
    Description:
    Accepted Manuscript
    Embargo End Date:
    2021-11-01
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    Type
    Article
    Authors
    Liu, Piyang
    Yan, Xia
    Yao, Jun
    Sun, Shuyu cc
    KAUST Department
    Computational Transport Phenomena Lab
    Earth Science and Engineering
    Earth Science and Engineering Program
    Physical Science and Engineering (PSE) Division
    Date
    2019-06-18
    Online Publication Date
    2019-06-18
    Print Publication Date
    2019-11
    Embargo End Date
    2021-11-01
    Permanent link to this record
    http://hdl.handle.net/10754/656046
    
    Metadata
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    Abstract
    We present a two-phase thermal-hydrologic-chemical coupled model for simulating the dissolution process during the acidization of carbonate rocks. In particular, we develop a new model to describe the change in irreducible water saturation, residual oil saturation, and the maximum relative permeability of oil and water phases with dissolution proceeding. We also present a new method for the generation of the initial porosity field with controllable correlation length. In numerical calculation, the sequential iteration approach is adopted to solve the presented model, and the operator splitting method is used to deal with the reaction relevant equations. The involved equations are discretized using the finite-volume method, where the convection term is discretized by the MINMOD scheme which can prevent overshoot/undershoot of the numerical solution. Additionally, sensitivity analysis of the dissolution process concerning rock properties, the exothermic heat of reaction, and two-phase flow, is carried out. Based on the predicted results, several recommendations for the carbonate acidizing operation are given, and the potential extensions of the current work are summarized.
    Citation
    Liu, P., Yan, X., Yao, J., & Sun, S. (2019). Modeling and analysis of the acidizing process in carbonate rocks using a two-phase thermal-hydrologic-chemical coupled model. Chemical Engineering Science, 207, 215–234. doi:10.1016/j.ces.2019.06.017
    Sponsors
    The authors gratefully acknowledge the support from the National Natural Science Foundation of China (No. 51804325), China Postdoctoral Science Foundation (No. 2019M652508), and the National Natural Science Foundation of China (Nos. 51874262, 51774317).
    Publisher
    Elsevier BV
    Journal
    Chemical Engineering Science
    DOI
    10.1016/j.ces.2019.06.017
    Additional Links
    https://linkinghub.elsevier.com/retrieve/pii/S0009250919305147
    ae974a485f413a2113503eed53cd6c53
    10.1016/j.ces.2019.06.017
    Scopus Count
    Collections
    Articles; Physical Science and Engineering (PSE) Division; Earth Science and Engineering Program; Computational Transport Phenomena Lab

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