Related by context. Frequent words. (Click for all words.) 62 geological formations 61 geologic formations 59 sequester carbon dioxide 59 salt domes 58 CO2 sequestration 57 Paradox Basin 56 kerogen 56 salt caverns 55 frac sand 55 methane hydrate 54 Lake Vostok 54 Albany Shale 54 carbonate reservoirs 53 Chattanooga Shale 53 methane hydrates 53 subsurface 53 minable 53 carbon dioxide sequestration 53 sulfide minerals 53 shale deposits 53 shales 53 Arctic permafrost 52 Gippsland Basin 52 Aquifers 52 geologic formation 52 coal seams 52 Georgina Basin 52 Barnett Shale formation 52 underground caverns 52 storage caverns 51 magma chamber 51 glacial till 51 THAI TM 51 sandstone reservoirs 51 coalbed methane wells 51 caverns 51 CO -2 51 volcanic vents 51 shale formations 51 evaporation ponds 51 extractable 51 porosities 51 coalbed methane CBM 50 sandstone reservoir 50 Kaskida 50 clathrates 50 previously undrilled 50 sequestration CCS 50 methane 50 Permian basin 50 kaolinite 50 Athabasca oilsands 50 Appalachian basin 50 wellbores 50 massive sulphide deposits 50 Lower Cretaceous 50 Marcellus shale formation 50 geosequestration 50 deplete oxygen 50 groundwater aquifers 50 OOIP 50 Ovoot Tolgoi 49 Carbon sequestration 49 sedimentary basin 49 injection wells 49 undrilled 49 adsorbent 49 areal extent 49 undersea volcanoes 49 Montney formation 49 depositional 49 Appalachian Basin 49 hydrocarbons 49 carbonaceous 49 Billion Cubic Feet 49 carbon dioxide 49 CO2 49 carbon sequestration 49 hydrocarbon 49 H2Omaxx 49 porphyry deposit 49 McCully Field 49 sulfide 49 Anadarko Basin 49 frac fluid 48 hydrothermal vent 48 Horizontal drilling 48 Woodford Shale 48 peridotite 48 fracturing fluids 48 drillable 48 sedimentary basins 48 Utica shale 48 economically recoverable 48 potent greenhouse gas 48 brine 48 marine sediments 48 brines 48 permafrost 48 carbon dioxide CO2 48 diatomite