Modelling of the CO2-Induced Degradation of a Fractured Caprock During Leakage: Potential for a Mechanical Self-Limiting Process
Sign Up to like & getrecommendations! Published in 2017 at "Rock Mechanics and Rock Engineering"
DOI: 10.1007/s00603-017-1260-9
Abstract: In the present study, we assess the potential for initiating ductile failure in a fractured caprock due to the chemical alteration of its mechanical properties under pressure increase induced by CO2 leakage and fixed in… read more here.
Keywords: system; caprock; fractured caprock; leakage ... See more keywords
Field-scale fault reactivation experiments by fluid injection highlight aseismic leakage in caprock analogs: Implications for CO2 sequestration
Sign Up to like & getrecommendations! Published in 2021 at "International Journal of Greenhouse Gas Control"
DOI: 10.1016/j.ijggc.2021.103471
Abstract: Abstract Observations on tens-of-meter scale experiments of fault activation by fluid injection conducted in shales allow exploring how aseismic and seismic events may jeopardize the integrity of a sealing caprock overlying a CO2 sequestration reservoir.… read more here.
Keywords: fault; co2 sequestration; caprock; leakage ... See more keywords
Seismic interpretation and characterization of anhydrite caprocks in the Tromsø Basin, SW Barents Sea
Sign Up to like & getrecommendations! Published in 2017 at "Marine Geology"
DOI: 10.1016/j.margeo.2017.04.013
Abstract: Abstract The origin of anhydrite caprocks found in many evaporite basins is currently under debate. Existing models in the literature for anhydrite formation include rotated stratigraphic layering, rotated crestal caprock and diagenetic anhydrite. In this… read more here.
Keywords: basin; anhydrite caprocks; salt diapirs; caprock ... See more keywords
Caprock characterization of Upper Jurassic organic-rich shales using acoustic properties, Norwegian Continental Shelf
Sign Up to like & getrecommendations! Published in 2020 at "Marine and Petroleum Geology"
DOI: 10.1016/j.marpetgeo.2020.104603
Abstract: Abstract Our analysis of a comprehensive well log database and complementary mineralogical and geochemical information indicates that the risk for Upper Jurassic shales on the Norwegian Continental Shelf (NCS) to permit severe leakage of hydrocarbons… read more here.
Keywords: organic rich; caprock; continental shelf; upper jurassic ... See more keywords
Numerical assessment of the maximum operating pressure for SAGD projects considering the effects of anisotropy and natural fractures
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Petroleum Science and Engineering"
DOI: 10.1016/j.petrol.2017.07.005
Abstract: Abstract There has been an increasing awareness of the importance of caprock integrity during Steam Assisted Gravity Drainage (SAGD) operations. However, mathematical tools that have been developed for caprock integrity studies have not incorporated an… read more here.
Keywords: caprock; caprock integrity; case; natural fractures ... See more keywords
Thermo‐Hydro‐Mechanical Model and Caprock Deformation Explain the Onset of an Ongoing Seismo‐Volcanic Unrest
Sign Up to like & getrecommendations! Published in 2021 at "Journal of Geophysical Research"
DOI: 10.1029/2020jb020449
Abstract: Coupled thermo-hydro-mechanical (THM) modeling has been widely applied in Enhanced Geothermal System sites (e.g., Gan & Lei, 2020; Rinaldi, Rutqvist, et al., 2015; Rutqvist, Dobson, et al., 2013; Vasco et al., 2013; Ziagos et al.,… read more here.
Keywords: seismicity; caprock; thermo hydro; deformation ... See more keywords
Diffusive Leakage Through Existing and/or Induced Microfractures in the Caprock of CO2 Storage System
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DOI: 10.2118/215816-pa
Abstract: Safe sequestration of CO2 in subsurface formations requires a caprock that inhibits the unwanted flow of the stored fluids. However, the preexisting fractures and the induced fractures initiated by overpressure and thermal stresses may act… read more here.
Keywords: caprock; pressure; monitoring; permeability ... See more keywords
Frictional Properties and Seismogenic Potential of Caprock Shales
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DOI: 10.3390/en13236275
Abstract: Fractures and faults are critical elements affecting the geomechanical integrity of CO2 storage sites. In particular, the slip of fractures and faults may affect reservoir integrity and increase potential for breach, may be monitored via… read more here.
Keywords: frictional properties; slip; caprock; velocity ... See more keywords
Combined Effects of CO2 Adsorption-Induced Swelling and Dehydration-Induced Shrinkage on Caprock Sealing Efficiency
Sign Up to like & getrecommendations! Published in 2022 at "International Journal of Environmental Research and Public Health"
DOI: 10.3390/ijerph192114574
Abstract: Carbon dioxide (CO2) may infiltrate into the caprock and displace brine water in the caprock layer. This causes two effects: one is the caprock swelling induced by the CO2 adsorption and the other is the… read more here.
Keywords: dehydration; co2 adsorption; sealing efficiency; water ... See more keywords
Geochemical Modelling of the Evolution of Caprock Sealing Capacity at the Shenhua CCS Demonstration Project
Sign Up to like & getrecommendations! Published in 2020 at "Minerals"
DOI: 10.3390/min10111009
Abstract: CO2 geological storage is considered as an important measure to reduce anthropogenic CO2 emissions to the atmosphere for addressing climate change. The key prerequisite for long-term CO2 geological storage is the sealing capacity of caprock.… read more here.
Keywords: caprock; ccs demonstration; sealing capacity; caprock sealing ... See more keywords