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dc.contributor.authorEftekhari, Behzad
dc.contributor.authorMarder, M.
dc.contributor.authorPatzek, Tadeusz
dc.date.accessioned2018-05-29T11:09:56Z
dc.date.available2018-05-29T11:09:56Z
dc.date.issued2018-05-23
dc.identifier.citationEftekhari B, Marder M, Patzek TW (2018) Field data provide estimates of effective permeability, fracture spacing, well drainage area and incremental production in gas shales. Journal of Natural Gas Science and Engineering. Available: http://dx.doi.org/10.1016/j.jngse.2018.05.027.
dc.identifier.issn1875-5100
dc.identifier.doi10.1016/j.jngse.2018.05.027
dc.identifier.urihttp://hdl.handle.net/10754/627973
dc.description.abstractAbout half of US natural gas comes from gas shales. It is valuable to study field production well by well. We present a field data-driven solution for long-term shale gas production from a horizontal, hydrofractured well far from other wells and reservoir boundaries. Our approach is a hybrid between an unstructured big-data approach and physics-based models. We extend a previous two-parameter scaling theory of shale gas production by adding a third parameter that incorporates gas inflow from the external unstimulated reservoir. This allows us to estimate for the first time the effective permeability of the unstimulated shale and the spacing of fractures in the stimulated region. From an analysis of wells in the Barnett shale, we find that on average stimulation fractures are spaced every 20 m, and the effective permeability of the unstimulated region is 100 nanodarcy. We estimate that over 30 years on production the Barnett wells will produce on average about 20% more gas because of inflow from the outside of the stimulated volume. There is a clear tradeoff between production rate and ultimate recovery in shale gas development. In particular, our work has strong implications for well spacing in infill drilling programs.
dc.description.sponsorshipB.E. acknowledges funding from the KAUST/University of Texas at Austin project “Physics of Hydrocarbon Recovery.”
dc.publisherElsevier BV
dc.relation.urlhttps://www.sciencedirect.com/science/article/pii/S1875510018302270
dc.rightsNOTICE: this is the author’s version of a work that was accepted for publication in Journal of Natural Gas 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 Natural Gas Science and Engineering, [(2018)] DOI: 10.1016/j.jngse.2018.05.027. © 2018. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectHydrofracturing
dc.subjectShale gas
dc.subjectFracking
dc.subjectEnergy resources
dc.subjectScaling laws
dc.titleField data provide estimates of effective permeability, fracture spacing, well drainage area and incremental production in gas shales
dc.typeArticle
dc.contributor.departmentAli I. Al-Naimi Petroleum Engineering Research Center (ANPERC)
dc.contributor.departmentEarth Science and Engineering Program
dc.contributor.departmentEnergy Resources and Petroleum Engineering
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.identifier.journalJournal of Natural Gas Science and Engineering
dc.eprint.versionPost-print
dc.contributor.institutionDepartment of Physics, The University of Texas at Austin, Austin, TX, 78712, USA
kaust.personPatzek, Tadeusz
refterms.dateFOA2020-05-23T00:00:00Z
dc.date.published-online2018-05-23
dc.date.published-print2018-08


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NOTICE: this is the author’s version of a work that was accepted for publication in Journal of Natural Gas 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 Natural Gas Science and Engineering, [(2018)] DOI: 10.1016/j.jngse.2018.05.027. © 2018. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
Except where otherwise noted, this item's license is described as NOTICE: this is the author’s version of a work that was accepted for publication in Journal of Natural Gas 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 Natural Gas Science and Engineering, [(2018)] DOI: 10.1016/j.jngse.2018.05.027. © 2018. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/