Fracture characterization in tight carbonates: An example from the Ozark Plateau, Arkansas.
Saved in:
| Title: | Fracture characterization in tight carbonates: An example from the Ozark Plateau, Arkansas. |
|---|---|
| Authors: | Burberry, Caroline M.1 cburberry2@unl.edu, Peppers, Matthew H.1,2 matthew.peppers@chk.com |
| Source: | AAPG Bulletin. Oct2017, Vol. 101 Issue 10, p1675-1696. 22p. |
| Subjects: | Carbonates, Fracture mechanics |
| Geographic Terms: | Ozark (Ark.) |
| Abstract: | Outcrop studies of fracture development, used as analogs for subsurface fracture patterns, are critical because of the importance of fractures as fluid flow pathways and the fact that most fracture networks exist at a smaller resolution than current seismic data can resolve. Fracture networks in carbonate units are typically controlled by the mechanical properties of the unit, indicating that the mechanical stratigraphy, as well as the fracture stratigraphy, should be considered. This study presents the results of a fracture analysis in the Mississippian carbonates of the Ozark Plateau, considering both mechanical and fracture network characteristics. Mechanical characteristics of the succession were defined using a combination of rebound values and thin section petrography. Fracture characteristics included orientation and intensity, together with abutting relationships. Results indicate that fracture orientations show a distinct evolution throughout the measured succession, including the appearance of early systematic sets, followed by pervasive systematic fracture sets related to existing basement features. Fracture orientation changes do not correspond to changes in mechanical stratigraphy. Fracture intensity, however, is related to the thickness of the mechanical unit instead of the bed thickness and is greatest in less competent units. Mechanical control influences the fracture network on a smaller scale than that of regional tectonic stresses. Thus, evaluations of carbonate reservoirs must account for both the large-scale and the small-scale investigations into fracture characteristic controls. Outcrop evaluations are of critical importance to properly assess characteristics that are challenging to recover from conventional subsurface data sets such as core and seismic reflection volumes. [ABSTRACT FROM AUTHOR] |
| Copyright of AAPG Bulletin is the property of American Association of Petroleum Geologists 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 |
|---|---|
| Header | DbId: egs DbLabel: Engineering Source An: 125365936 AccessLevel: 6 PubType: Periodical PubTypeId: serialPeriodical PreciseRelevancyScore: 0 |
| IllustrationInfo | |
| Items | – Name: Title Label: Title Group: Ti Data: Fracture characterization in tight carbonates: An example from the Ozark Plateau, Arkansas. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Burberry%2C+Caroline+M%2E%22">Burberry, Caroline M.</searchLink><relatesTo>1</relatesTo><i> cburberry2@unl.edu</i><br /><searchLink fieldCode="AR" term="%22Peppers%2C+Matthew+H%2E%22">Peppers, Matthew H.</searchLink><relatesTo>1,2</relatesTo><i> matthew.peppers@chk.com</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22AAPG+Bulletin%22">AAPG Bulletin</searchLink>. Oct2017, Vol. 101 Issue 10, p1675-1696. 22p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Carbonates%22">Carbonates</searchLink><br /><searchLink fieldCode="DE" term="%22Fracture+mechanics%22">Fracture mechanics</searchLink> – Name: SubjectGeographic Label: Geographic Terms Group: Su Data: <searchLink fieldCode="DE" term="%22Ozark+%28Ark%2E%29%22">Ozark (Ark.)</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Outcrop studies of fracture development, used as analogs for subsurface fracture patterns, are critical because of the importance of fractures as fluid flow pathways and the fact that most fracture networks exist at a smaller resolution than current seismic data can resolve. Fracture networks in carbonate units are typically controlled by the mechanical properties of the unit, indicating that the mechanical stratigraphy, as well as the fracture stratigraphy, should be considered. This study presents the results of a fracture analysis in the Mississippian carbonates of the Ozark Plateau, considering both mechanical and fracture network characteristics. Mechanical characteristics of the succession were defined using a combination of rebound values and thin section petrography. Fracture characteristics included orientation and intensity, together with abutting relationships. Results indicate that fracture orientations show a distinct evolution throughout the measured succession, including the appearance of early systematic sets, followed by pervasive systematic fracture sets related to existing basement features. Fracture orientation changes do not correspond to changes in mechanical stratigraphy. Fracture intensity, however, is related to the thickness of the mechanical unit instead of the bed thickness and is greatest in less competent units. Mechanical control influences the fracture network on a smaller scale than that of regional tectonic stresses. Thus, evaluations of carbonate reservoirs must account for both the large-scale and the small-scale investigations into fracture characteristic controls. Outcrop evaluations are of critical importance to properly assess characteristics that are challenging to recover from conventional subsurface data sets such as core and seismic reflection volumes. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of AAPG Bulletin is the property of American Association of Petroleum Geologists 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.) |
| PLink | https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=125365936 |
| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1306/01251715242 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 22 StartPage: 1675 Subjects: – SubjectFull: Carbonates Type: general – SubjectFull: Fracture mechanics Type: general – SubjectFull: Ozark (Ark.) Type: general Titles: – TitleFull: Fracture characterization in tight carbonates: An example from the Ozark Plateau, Arkansas. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Burberry, Caroline M. – PersonEntity: Name: NameFull: Peppers, Matthew H. IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 10 Text: Oct2017 Type: published Y: 2017 Identifiers: – Type: issn-print Value: 01491423 Numbering: – Type: volume Value: 101 – Type: issue Value: 10 Titles: – TitleFull: AAPG Bulletin Type: main |
| ResultId | 1 |
