Related by context. Frequent words. (Click for all words.) 65 underground caverns 58 storage caverns 52 caverns 49 geological formations 48 Gas Storage 46 reservoirs 46 geologic formations 46 trillion cubic feet 45 Bakken shale 45 Barnett shale 44 coal seams 44 storage tanks 44 basins 44 Bcf 44 cavern 44 shale deposits 44 gasfield 43 Anadarko Basin 42 Alberta tar sands 42 aquifer 42 lignite 42 aquifers 42 cubic feet Bcf 42 dry casks 42 bcf 42 Tupi field 42 trillion cubic meters 42 hydrocarbon reserves 42 undrilled 42 Ogallala Aquifer 42 tcf 41 lignite coal 41 reservoir 41 Surmont 41 brine 41 underground aquifers 41 Bakken Formation 40 undeveloped acreage 40 underground aquifer 40 Tcf 40 Bakken formation 40 subsea wells 40 Bcfe 40 Natural Gas Storage 40 shale formations 40 basin 40 Strategic Petroleum 40 Hardisty Alberta 40 limestone quarry 40 Nevada Yucca Mountain 39 sedimentary basin 39 Sleipner 39 liquefaction plant 39 Surat Basin 39 Bcf d 39 liquefied natural gas 39 shale 39 cubic feet 39 radioactive waste 39 MMBoe 39 natural gas 39 dredge spoils 39 Carbon Capture 39 Basins 39 wells 39 shale gas 38 LNG terminals 38 LNG terminal 38 Galilee Basin 38 refineries 38 peat bogs 38 3P reserves 38 tonnes grading #.# 38 Arkoma Basin 38 tar sands 38 Santos Basin 38 tailings 38 stockpile 38 reserves 38 shales 38 subsalt 38 hydrofluoric acid 38 interceptor missiles 38 deepwater Gulf 38 Caspian basin 38 wellfield 38 bcfd 37 gas hydrates 37 wells drilled 37 freshwater lake 37 Marcellus Shale formation 37 barrels 37 liquified natural gas 37 Utica Shale 37 sedimentary rock 37 coal gasification plant 37 oilfields 37 gasification 37 tankage 37 Browse Basin 37 MMBbls