Comparative study of shale-gas production using single- and dual-continuum approaches

Handle URI:
http://hdl.handle.net/10754/625178
Title:
Comparative study of shale-gas production using single- and dual-continuum approaches
Authors:
El-Amin, Mohamed ( 0000-0002-1099-2299 ) ; Amir, Sahar Z.; Salama, Amgad; Urozayev, Dias ( 0000-0002-7086-4977 ) ; Sun, Shuyu ( 0000-0002-3078-864X )
Abstract:
In this paper, we explore the possibility of specifying the ideal hypothetical positions of matrices blocks and fractures in fractured porous media as a single-continuum reservoir model in a way that mimics the dual-porosity dual-permeability (DPDP) configuration. In order to get an ideal mimic, we use the typical configuration and geometrical hypotheses of the DPDP model for the SDFM. Unlike the DPDP model which consists of two equations for the two-continuum coupled by a transfer term, the proposed single-domain fracture model (SDFM) model consists of a single equation for the single-continuum. Each one of the two models includes slippage effect, adsorption, Knudsen diffusion, geomechanics, and thermodynamics deviation factor. For the thermodynamics calculations, the cubic Peng-Robinson equation of state is employed. The diffusion model is verified by calculating the total mass flux through a nanopore by combination of slip flow and Knudsen diffusion and compared with experimental data. A semi-implicit scheme is used for the time discretization while the thermodynamics equations are updated explicitly. The spatial discretization is done using the cell-centered finite difference (CCFD) method. Finally, numerical experiments are performed under variations of the physical parameters. Several results are discussed such as pressure, production rate and cumulative production. We compare the results of the two models using the same dimensions and physical and computational parameters. We found that the DPDP and the SDFM models production rate and cumulative production behave similarly with approximately the same slope but with some differences in values. Moreover, we found that the poroelasticity effect reduces the production rate and consequently the cumulative production rate but in the SDFM model the reservoir takes more time to achieve depletion than the DPDP model. The normal fracture factor which appears in the transfer term of the DPDP model is adjusted against the SDFM.
KAUST Department:
Physical Sciences and Engineering (PSE) Division; Earth Science and Engineering Program
Citation:
El Amin MF, Amir S, Salama A, Urozayev D, Sun S (2017) Comparative study of shale-gas production using single- and dual-continuum approaches. Journal of Petroleum Science and Engineering. Available: http://dx.doi.org/10.1016/j.petrol.2017.07.011.
Publisher:
Elsevier BV
Journal:
Journal of Petroleum Science and Engineering
Issue Date:
6-Jul-2017
DOI:
10.1016/j.petrol.2017.07.011
Type:
Article
ISSN:
0920-4105
Additional Links:
http://www.sciencedirect.com/science/article/pii/S0920410517305727
Appears in Collections:
Articles; Physical Sciences and Engineering (PSE) Division; Earth Science and Engineering Program

Full metadata record

DC FieldValue Language
dc.contributor.authorEl-Amin, Mohameden
dc.contributor.authorAmir, Sahar Z.en
dc.contributor.authorSalama, Amgaden
dc.contributor.authorUrozayev, Diasen
dc.contributor.authorSun, Shuyuen
dc.date.accessioned2017-07-12T07:20:54Z-
dc.date.available2017-07-12T07:20:54Z-
dc.date.issued2017-07-06en
dc.identifier.citationEl Amin MF, Amir S, Salama A, Urozayev D, Sun S (2017) Comparative study of shale-gas production using single- and dual-continuum approaches. Journal of Petroleum Science and Engineering. Available: http://dx.doi.org/10.1016/j.petrol.2017.07.011.en
dc.identifier.issn0920-4105en
dc.identifier.doi10.1016/j.petrol.2017.07.011en
dc.identifier.urihttp://hdl.handle.net/10754/625178-
dc.description.abstractIn this paper, we explore the possibility of specifying the ideal hypothetical positions of matrices blocks and fractures in fractured porous media as a single-continuum reservoir model in a way that mimics the dual-porosity dual-permeability (DPDP) configuration. In order to get an ideal mimic, we use the typical configuration and geometrical hypotheses of the DPDP model for the SDFM. Unlike the DPDP model which consists of two equations for the two-continuum coupled by a transfer term, the proposed single-domain fracture model (SDFM) model consists of a single equation for the single-continuum. Each one of the two models includes slippage effect, adsorption, Knudsen diffusion, geomechanics, and thermodynamics deviation factor. For the thermodynamics calculations, the cubic Peng-Robinson equation of state is employed. The diffusion model is verified by calculating the total mass flux through a nanopore by combination of slip flow and Knudsen diffusion and compared with experimental data. A semi-implicit scheme is used for the time discretization while the thermodynamics equations are updated explicitly. The spatial discretization is done using the cell-centered finite difference (CCFD) method. Finally, numerical experiments are performed under variations of the physical parameters. Several results are discussed such as pressure, production rate and cumulative production. We compare the results of the two models using the same dimensions and physical and computational parameters. We found that the DPDP and the SDFM models production rate and cumulative production behave similarly with approximately the same slope but with some differences in values. Moreover, we found that the poroelasticity effect reduces the production rate and consequently the cumulative production rate but in the SDFM model the reservoir takes more time to achieve depletion than the DPDP model. The normal fracture factor which appears in the transfer term of the DPDP model is adjusted against the SDFM.en
dc.publisherElsevier BVen
dc.relation.urlhttp://www.sciencedirect.com/science/article/pii/S0920410517305727en
dc.rightsNOTICE: this is the author’s version of a work that was accepted for publication in Journal of Petroleum Science and Engineering. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Journal of Petroleum Science and Engineering, [, , (2017-07-06)] DOI: 10.1016/j.petrol.2017.07.011 . © 2017. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/en
dc.subjectShale-gasen
dc.subjectDual-porosity dual-permeabilityen
dc.subjectFractured reservoiren
dc.subjectPorous mediaen
dc.subjectReservoir simulationen
dc.titleComparative study of shale-gas production using single- and dual-continuum approachesen
dc.typeArticleen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.contributor.departmentEarth Science and Engineering Programen
dc.identifier.journalJournal of Petroleum Science and Engineeringen
dc.eprint.versionPost-printen
dc.contributor.institutionEffat University, Jeddah 21478, Saudi Arabiaen
dc.contributor.institutionRegina University, Regina, Canadaen
kaust.authorEl-Amin, Mohameden
kaust.authorAmir, Sahar Z.en
kaust.authorUrozayev, Diasen
kaust.authorSun, Shuyuen
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