Failure of cap-rock seals as determined from mechanical stratigraphy, stress history, and tensile-failure analysis of exhumed analogs
- Utah State Univ., Logan, UT (United States)
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
In this study, the sedimentologic and tectonic histories of clastic cap rocks and their inherent mechanical properties control the nature of permeable fractures within them. The migration of fluid through mm- to cm-scale fracture networks can result in focused fluid flow allowing hydrocarbon production from unconventional reservoirs or compromising the seal integrity of fluid traps. To understand the nature and distribution of subsurface fluid-flow pathways through fracture networks in cap-rock seals we examine four exhumed Paleozoic and Mesozoic seal analogs in Utah. We combine these outcrop analyses with subsidence analysis, paleoloading histories, and rock-strength testing data in modified Mohr–Coulomb–Griffith analyses to evaluate the effects of differential stress and rock type on fracture mode.
- Research Organization:
- Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)
- Sponsoring Organization:
- USDOE
- Grant/Contract Number:
- AC04-94AL85000
- OSTI ID:
- 1234518
- Report Number(s):
- SAND--2014-17837J; 537608
- Journal Information:
- AAPG Bulletin, Journal Name: AAPG Bulletin Journal Issue: 11 Vol. 98; ISSN 0149-1423
- Publisher:
- AAPGCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Quantitative characterization of sealing integrity by caprock of Paleocene Artashi Formation gypsolyte rock in Kashi Sag of Tarim Basin, NW China
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journal | March 2019 |
Fault failure modes, deformation mechanisms, dilation tendency, slip tendency, and conduits v. seals
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journal | November 2019 |
Characterization and Prediction of Complex Natural Fractures in the Tight Conglomerate Reservoirs: A Fractal Method
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journal | September 2018 |
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