Empirical and numerical approaches for geomechanical characterization of coal seam reservoirs
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| Title: | Empirical and numerical approaches for geomechanical characterization of coal seam reservoirs |
|---|---|
| Authors: | Deisman, Nathan1 ndeisman@ualberta.ca, Mas Ivars, Diego2, Darcel, Caroline3, Chalaturnyk, Richard J.1 |
| Source: | International Journal of Coal Geology. Jun2010, Vol. 82 Issue 3/4, p204-212. 9p. |
| Subjects: | Coal reserves, Coal geology, Geological research, Rock deformation, Strength of materials, Anisotropy, Fracture mechanics |
| Abstract: | Abstract: The effects of fractures or joints on geomechanical properties of coal when transitioning from small samples to larger field scales have long been recognized. Two geomechanical characterization methodologies for of a coal seam for reservoir engineering are presented which attempt to account for these scale effect. The first is a well established empirical rock mass classification method, the Geological Strength Index (GSI). The second is a newly developed numerical technique, termed the Synthetic Rock Mass (SRM). GSI was developed to empirically account for the influence of rock joint density and joint surface conditions on the behaviour of the rock mass. The established GSI to strength and deformation theories are reviewed and an approach to account for joint stiffness based on the minimum confining stress is presented. The SRM approach to jointed rock mass geomechanical characterization is a numerical modeling technique which combines the Bonded Particle Model for rock and Discrete Fracture Network simulation. The intact or matrix of the SRM is calibrated to laboratory data, the DFN inserted creating a numerical representation of the rock mass which can then be tested at any scale. In each case, the approaches attempt to geomechanically characterize (strength, modulus, etc) the large scale behaviour of the coal seam, where the properties can then be used for continuum type simulation (reservoir simulation, borehole stability, etc). [Copyright &y& Elsevier] |
| Copyright of International Journal of Coal Geology is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 50694396 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Empirical and numerical approaches for geomechanical characterization of coal seam reservoirs – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Deisman%2C+Nathan%22">Deisman, Nathan</searchLink><relatesTo>1</relatesTo><i> ndeisman@ualberta.ca</i><br /><searchLink fieldCode="AR" term="%22Mas+Ivars%2C+Diego%22">Mas Ivars, Diego</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Darcel%2C+Caroline%22">Darcel, Caroline</searchLink><relatesTo>3</relatesTo><br /><searchLink fieldCode="AR" term="%22Chalaturnyk%2C+Richard+J%2E%22">Chalaturnyk, Richard J.</searchLink><relatesTo>1</relatesTo> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22International+Journal+of+Coal+Geology%22">International Journal of Coal Geology</searchLink>. Jun2010, Vol. 82 Issue 3/4, p204-212. 9p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Coal+reserves%22">Coal reserves</searchLink><br /><searchLink fieldCode="DE" term="%22Coal+geology%22">Coal geology</searchLink><br /><searchLink fieldCode="DE" term="%22Geological+research%22">Geological research</searchLink><br /><searchLink fieldCode="DE" term="%22Rock+deformation%22">Rock deformation</searchLink><br /><searchLink fieldCode="DE" term="%22Strength+of+materials%22">Strength of materials</searchLink><br /><searchLink fieldCode="DE" term="%22Anisotropy%22">Anisotropy</searchLink><br /><searchLink fieldCode="DE" term="%22Fracture+mechanics%22">Fracture mechanics</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Abstract: The effects of fractures or joints on geomechanical properties of coal when transitioning from small samples to larger field scales have long been recognized. Two geomechanical characterization methodologies for of a coal seam for reservoir engineering are presented which attempt to account for these scale effect. The first is a well established empirical rock mass classification method, the Geological Strength Index (GSI). The second is a newly developed numerical technique, termed the Synthetic Rock Mass (SRM). GSI was developed to empirically account for the influence of rock joint density and joint surface conditions on the behaviour of the rock mass. The established GSI to strength and deformation theories are reviewed and an approach to account for joint stiffness based on the minimum confining stress is presented. The SRM approach to jointed rock mass geomechanical characterization is a numerical modeling technique which combines the Bonded Particle Model for rock and Discrete Fracture Network simulation. The intact or matrix of the SRM is calibrated to laboratory data, the DFN inserted creating a numerical representation of the rock mass which can then be tested at any scale. In each case, the approaches attempt to geomechanically characterize (strength, modulus, etc) the large scale behaviour of the coal seam, where the properties can then be used for continuum type simulation (reservoir simulation, borehole stability, etc). [Copyright &y& Elsevier] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of International Journal of Coal Geology is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1016/j.coal.2009.11.003 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 9 StartPage: 204 Subjects: – SubjectFull: Coal reserves Type: general – SubjectFull: Coal geology Type: general – SubjectFull: Geological research Type: general – SubjectFull: Rock deformation Type: general – SubjectFull: Strength of materials Type: general – SubjectFull: Anisotropy Type: general – SubjectFull: Fracture mechanics Type: general Titles: – TitleFull: Empirical and numerical approaches for geomechanical characterization of coal seam reservoirs Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Deisman, Nathan – PersonEntity: Name: NameFull: Mas Ivars, Diego – PersonEntity: Name: NameFull: Darcel, Caroline – PersonEntity: Name: NameFull: Chalaturnyk, Richard J. IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 06 Text: Jun2010 Type: published Y: 2010 Identifiers: – Type: issn-print Value: 01665162 Numbering: – Type: volume Value: 82 – Type: issue Value: 3/4 Titles: – TitleFull: International Journal of Coal Geology Type: main |
| ResultId | 1 |
