11: Fracture Characterization and Prediction in Unconventional Reservoirs of the “Mississippian Limestone,” North-Central Oklahoma, United States
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Published:January 01, 2019
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CiteCitation
Yulun Wang, Taylor Thompson, G. Michael Grammer, 2019. "Fracture Characterization and Prediction in Unconventional Reservoirs of the “Mississippian Limestone,” North-Central Oklahoma, United States", Mississippian Reservoirs of the Midcontinent, G. Michael Grammer, Jay M. Gregg, James Puckette, Priyank Jaiswal, S. J. Mazzullo, Matthew J. Pranter, Robert H. Goldstein
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ABSTRACT
Natural fractures are common in several unconventional reservoirs in the U.S. and around the world and, even when sealed with cements, can facilitate the propagation of induced fractures during hydraulic fracturing. This study is focused on correlating fracture types and intensity to distinct petrophysically significant facies and to an established sequence stratigraphic framework in the unconventional carbonate reservoirs of the “Mississippian limestone” of the U.S. midcontinent region.
Four fracture types are observed: ptygmatic, vertical extension, shear, and mixed types of fractures. Most of the fractures have been completely sealed with predominantly calcite cement. Fractured zones are vertically heterogeneous at...
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Contents
Mississippian Reservoirs of the Midcontinent
GeoRef
- carbonate rocks
- Carboniferous
- characterization
- clastic rocks
- enhanced recovery
- fractures
- hydraulic fracturing
- limestone
- mechanical properties
- Mississippian
- natural gas
- naturally fractured reservoirs
- Oklahoma
- Oklahoma County Oklahoma
- Paleozoic
- permeability
- petroleum
- petroleum engineering
- porosity
- reservoir rocks
- sandstone
- sedimentary rocks
- sequence stratigraphy
- siltstone
- structural traps
- traps
- United States
- Namaha Uplift
- Namaha fault zone