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NARROW
GeoRef Subject
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all geography including DSDP/ODP Sites and Legs
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Africa
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North Africa
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Algeria (2)
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Antarctica (1)
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Asia
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Shanxi China (3)
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commodities
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geothermal energy (1)
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mineral deposits, genesis (1)
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elements, isotopes
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carbon
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hydrogen (3)
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metals
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strontium
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Sr-87/Sr-86 (2)
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iron
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ferrous iron (1)
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noble gases
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argon
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Ar-36 (1)
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Ar-40/Ar-36 (1)
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helium
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He-4/He-3 (1)
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krypton
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xenon
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oxygen
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fossils
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geologic age
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Cenozoic
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Quaternary
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Tertiary
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Neogene
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Miocene
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Guantao Formation (2)
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Pliocene (1)
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Paleogene
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Dongying Formation (2)
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Eocene
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Green River Formation (1)
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lower Eocene (1)
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Kapuni Group (1)
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Oligocene
-
middle Oligocene (1)
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Vicksburg Group (1)
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Wilcox Group (2)
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-
Shahejie Formation (2)
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-
Mesozoic
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Cretaceous
-
Comanchean
-
Travis Peak Formation (3)
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-
Dakota Formation (2)
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Lower Cretaceous
-
Cadomin Formation (1)
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Gething Formation (1)
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Mannville Group (1)
-
McMurray Formation (1)
-
Spirit River Formation (2)
-
Travis Peak Formation (3)
-
-
Nenjiang Formation (1)
-
Qingshankou Formation (1)
-
Quantou Formation (1)
-
Upper Cretaceous
-
Almond Formation (2)
-
Cardium Formation (1)
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Codell Sandstone Member (1)
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Frontier Formation (2)
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Gulfian
-
Austin Chalk (1)
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Olmos Formation (1)
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-
Lance Formation (2)
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Lewis Shale (2)
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Mesaverde Group (14)
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Niobrara Formation (1)
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Williams Fork Formation (5)
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-
-
Jurassic
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Lower Jurassic (2)
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Middle Jurassic (1)
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Norphlet Formation (1)
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Upper Jurassic
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Bossier Formation (3)
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Cotton Valley Group (6)
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Smackover Formation (1)
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Triassic
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Lower Triassic
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Bunter (1)
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Middle Triassic (1)
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Upper Triassic
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Xujiahe Formation (3)
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Yanchang Formation (15)
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Yanshanian (5)
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Paleozoic
-
Berea Sandstone (1)
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Carboniferous
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Benxi Formation (2)
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Jackfork Group (1)
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Mississippian
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Barnett Shale (2)
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Pennsylvanian
-
Middle Pennsylvanian
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Breathitt Formation (1)
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Pottsville Group (1)
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Upper Pennsylvanian
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Canyon Group (1)
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-
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Upper Carboniferous (2)
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-
Devonian
-
Lower Devonian
-
Oriskany Sandstone (1)
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-
Middle Devonian
-
Marcellus Shale (1)
-
-
Upper Devonian
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Chemung Formation (1)
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Famennian
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Wabamun Group (1)
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-
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Ordovician
-
Utica Shale (1)
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-
Permian
-
Lower Permian
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Abo Formation (1)
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Leman Sandstone Formation (2)
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Leonardian (1)
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Wolfcampian (1)
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Middle Permian (1)
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Rotliegendes (3)
-
Shihezi Formation (4)
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Upper Permian
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Zechstein (1)
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Silurian
-
Lower Silurian
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Tuscarora Formation (1)
-
-
-
Taiyuan Formation (3)
-
upper Paleozoic
-
Shanxi Formation (5)
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igneous rocks
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igneous rocks
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plutonic rocks
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granites (1)
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pegmatite (1)
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volcanic rocks (3)
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metamorphic rocks
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metamorphic rocks
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minerals
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calcite (6)
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rhodochrosite (1)
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halides
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fluorides
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fluorite (1)
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silicates
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framework silicates
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feldspar group
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alkali feldspar
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K-feldspar (1)
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silica minerals
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quartz (4)
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sheet silicates
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chlorite group
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chlorite (2)
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clay minerals
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kaolinite (3)
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illite (2)
-
-
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sulfates
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barite (1)
-
-
sulfides
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sphalerite (1)
-
-
-
Primary terms
-
Africa
-
North Africa
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Algeria (2)
-
-
-
Antarctica (1)
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Arctic region
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Svalbard (1)
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Asia
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Far East
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China
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Bohaiwan Basin (3)
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Dongpu Depression (1)
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Gansu China (1)
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Henan China (1)
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Inner Mongolia China (1)
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Jilin China (1)
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North China Platform (5)
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Ordos Basin (27)
-
Shandong China
-
Dongying Depression (2)
-
Jiyang Depression (1)
-
-
Shanxi China (3)
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Sichuan Basin (9)
-
Songliao Basin (4)
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Xinjiang China
-
Junggar Basin (1)
-
Kuqa Depression (3)
-
Tarim Basin (2)
-
-
-
-
Tien Shan (1)
-
-
Atlantic Ocean
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North Atlantic
-
North Sea (3)
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Scotian Shelf (1)
-
-
-
Australasia
-
Australia
-
Queensland Australia (1)
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South Australia (1)
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New Zealand (1)
-
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bitumens
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asphalt (1)
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brines (3)
-
Canada
-
Eastern Canada
-
Maritime Provinces
-
Nova Scotia (1)
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Meguma Terrane (1)
-
-
Western Canada
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Alberta (6)
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British Columbia (1)
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Saskatchewan (1)
-
-
-
carbon
-
C-13/C-12 (4)
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-
Cenozoic
-
Quaternary
-
Holocene (1)
-
-
Tertiary
-
Neogene
-
Miocene
-
Guantao Formation (2)
-
-
Pliocene (1)
-
-
Paleogene
-
Dongying Formation (2)
-
Eocene
-
Green River Formation (1)
-
lower Eocene (1)
-
-
Kapuni Group (1)
-
Oligocene
-
middle Oligocene (1)
-
Vicksburg Group (1)
-
-
Wilcox Group (2)
-
-
Shahejie Formation (2)
-
-
-
data processing (6)
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deformation (9)
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diagenesis (28)
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earthquakes (5)
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engineering geology (1)
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Europe
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Central Europe
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Germany
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Hungary (1)
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Pannonian Basin (1)
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Scandinavia
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faults (29)
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hydrology (1)
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igneous rocks
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volcanic rocks (3)
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inclusions
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fluid inclusions (9)
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Indian Ocean
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Arabian Sea
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Red Sea
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Gulf of Suez (1)
-
-
-
intrusions (1)
-
isotopes
-
stable isotopes
-
Ar-36 (1)
-
Ar-40/Ar-36 (1)
-
C-13/C-12 (4)
-
He-4/He-3 (1)
-
Kr-84 (1)
-
Ne-20 (1)
-
Ne-22/Ne-21 (1)
-
O-18/O-16 (2)
-
Sr-87/Sr-86 (2)
-
Xe-132 (1)
-
-
-
marine installations (1)
-
Mesozoic
-
Cretaceous
-
Comanchean
-
Travis Peak Formation (3)
-
-
Dakota Formation (2)
-
Lower Cretaceous
-
Cadomin Formation (1)
-
Gething Formation (1)
-
Mannville Group (1)
-
McMurray Formation (1)
-
Spirit River Formation (2)
-
Travis Peak Formation (3)
-
-
Nenjiang Formation (1)
-
Qingshankou Formation (1)
-
Quantou Formation (1)
-
Upper Cretaceous
-
Almond Formation (2)
-
Cardium Formation (1)
-
Codell Sandstone Member (1)
-
Frontier Formation (2)
-
Gulfian
-
Austin Chalk (1)
-
Olmos Formation (1)
-
-
Lance Formation (2)
-
Lewis Shale (2)
-
Mesaverde Group (14)
-
Niobrara Formation (1)
-
Williams Fork Formation (5)
-
-
-
Jurassic
-
Lower Jurassic (2)
-
Middle Jurassic (1)
-
Norphlet Formation (1)
-
Upper Jurassic
-
Bossier Formation (3)
-
Cotton Valley Group (6)
-
Smackover Formation (1)
-
-
-
Triassic
-
Lower Triassic
-
Bunter (1)
-
-
Middle Triassic (1)
-
Upper Triassic
-
Xujiahe Formation (3)
-
Yanchang Formation (15)
-
-
-
Yanshanian (5)
-
-
metal ores
-
copper ores (1)
-
gold ores (1)
-
lead ores (1)
-
lead-zinc deposits (1)
-
silver ores (1)
-
zinc ores (1)
-
-
metals
-
alkaline earth metals
-
calcium (1)
-
strontium
-
Sr-87/Sr-86 (2)
-
-
-
iron
-
ferrous iron (1)
-
-
-
metamorphic rocks
-
metasomatic rocks
-
skarn (1)
-
-
quartzites (1)
-
-
metasomatism (1)
-
mineral deposits, genesis (1)
-
noble gases
-
argon
-
Ar-36 (1)
-
Ar-40/Ar-36 (1)
-
-
helium
-
He-4/He-3 (1)
-
-
krypton
-
Kr-84 (1)
-
-
neon
-
Ne-20 (1)
-
Ne-22/Ne-21 (1)
-
-
xenon
-
Xe-132 (1)
-
-
-
North America
-
Appalachian Basin (4)
-
Appalachians (2)
-
Gulf Coastal Plain (3)
-
Rocky Mountains (2)
-
Western Canada Sedimentary Basin (2)
-
-
oil and gas fields (44)
-
orogeny (2)
-
oxygen
-
O-18/O-16 (2)
-
-
Pacific Ocean
-
North Pacific
-
Northwest Pacific
-
Yellow Sea
-
Bohai Sea
-
Bohai Bay (1)
-
-
-
-
-
West Pacific
-
Northwest Pacific
-
Yellow Sea
-
Bohai Sea
-
Bohai Bay (1)
-
-
-
-
-
-
paleogeography (3)
-
paleomagnetism (1)
-
Paleozoic
-
Berea Sandstone (1)
-
Carboniferous
-
Benxi Formation (2)
-
Jackfork Group (1)
-
Mississippian
-
Barnett Shale (2)
-
-
Pennsylvanian
-
Middle Pennsylvanian
-
Breathitt Formation (1)
-
-
Pottsville Group (1)
-
Upper Pennsylvanian
-
Canyon Group (1)
-
-
-
Upper Carboniferous (2)
-
-
Devonian
-
Lower Devonian
-
Oriskany Sandstone (1)
-
-
Middle Devonian
-
Marcellus Shale (1)
-
-
Upper Devonian
-
Chemung Formation (1)
-
Famennian
-
Wabamun Group (1)
-
-
-
-
Ordovician
-
Utica Shale (1)
-
-
Permian
-
Lower Permian
-
Abo Formation (1)
-
Leman Sandstone Formation (2)
-
Leonardian (1)
-
Wolfcampian (1)
-
-
Middle Permian (1)
-
Rotliegendes (3)
-
Shihezi Formation (4)
-
Upper Permian
-
Zechstein (1)
-
-
-
Silurian
-
Lower Silurian
-
Tuscarora Formation (1)
-
-
-
Taiyuan Formation (3)
-
upper Paleozoic
-
Shanxi Formation (5)
-
-
-
paragenesis (4)
-
petroleum
-
natural gas
-
coalbed methane (4)
-
shale gas (6)
-
-
-
plate tectonics (1)
-
pollution (2)
-
rock mechanics (5)
-
sea-level changes (3)
-
sedimentary petrology (1)
-
sedimentary rocks
-
carbonate rocks
-
chalk (2)
-
limestone (1)
-
-
clastic rocks
-
arenite
-
litharenite (3)
-
quartz arenite (2)
-
sublitharenite (3)
-
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arkose (1)
-
conglomerate (1)
-
graywacke (1)
-
mudstone (11)
-
red beds (1)
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sandstone (81)
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shale (18)
-
siltstone (3)
-
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coal
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anthracite (1)
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gas sands (11)
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gas shale (5)
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oil sands (7)
-
oil shale (2)
-
-
sedimentary structures
-
biogenic structures
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bioturbation (1)
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planar bedding structures
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bedding (2)
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cross-stratification (1)
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sand bodies (1)
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sedimentation (3)
-
sediments
-
clastic sediments
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sand (1)
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spectroscopy (1)
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structural analysis (1)
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tectonics
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neotectonics (1)
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underground installations (2)
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United States
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Anadarko Basin (2)
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tight sands
An enhanced accuracy method to determine oil saturation by carbon/oxygen logging in tight reservoirs
Localizing microseismic events on field data using a U-Net-based convolutional neural network trained on synthetic data
Spatiotemporal variations in seismic attenuation during hydraulic fracturing: A case study in a tight oil reservoir in the Ordos Basin, China
Porosity estimation based on the rock skeleton general formula and comprehensive pore structure parameter — An application to a tight-sand reservoir
Seismic estimation of fluid saturation based on rock physics: A case study of the tight-gas sandstone reservoirs in the Ordos Basin
k NN-based gas-bearing prediction using local waveform similarity gas-indication attribute — An application to a tight sandstone reservoir
A new method for logging identification of fluid properties in tight sandstone gas reservoirs based on gray correlation weight analysis — A case study of the Middle Jurassic Shaximiao Formation on the eastern slope of the Western Sichuan Depression, China
Influence of Pore Throat Structure and the Multiphases Fluid Seepage on Mobility of Tight Oil Reservoir
Modeling and interpretation of scattered waves in interstage distributed acoustic sensing vertical seismic profiling survey
Attenuation methods for quantifying gas saturation in organic-rich shale and tight gas formations
Using resistivity data to study the waterflooding process: A case study in tight sandstone reservoirs of the Ordos Basin, China
Super basins—New paradigm for oil and gas supply
Super basin thinking: Methods to explore and revitalize the world’s greatest petroleum basins
Fracture identification in tight reservoirs by multiple kernel Fisher discriminant analysis using conventional logs
Insight into pore-throat size distribution and the controls on oil saturation of tight sandstone reservoirs using nuclear magnetic resonance parameters: A case study of the Lower Cretaceous Quantou Formation in the southern Songliao Basin, China
Comparison of diagenetic characteristics and pore evolution in outcrops and cores of tight sandstone reservoirs in the Triassic Yanchang Formation, the Ordos Basin, China
Diagenetic alteration, pore-throat network, and reservoir quality of tight gas sandstone reservoirs: A case study of the upper Paleozoic sequence in the northern Tianhuan depression in the Ordos Basin, China
Abstract The Cygnus Field is located in Blocks 44/11a and 44/12a of the UK Southern North Sea. The field was first discovered in 1988 as a tight lower Leman Sandstone Formation gas discovery by well 44/12- 1. After the licences had sat idle for several years, GDF Britain (now Neptune E&P UK Ltd) appraised the field from 2006 to 2010. During the appraisal phase, the lower Leman Sandstone was found to be of better quality than first discovered and the gas-bearing lower Ketch Member reservoir was also encountered. The field development was sanctioned in 2012. The field has been developed from two wellhead platforms targeting Leman Sandstone and Ketch Member reservoirs. Five main fault blocks have been developed, with two wells in each fault block planned in the field development plan. The wells are long horizontal wells completed with stand-alone sand screens. At the time of writing, the production plateau is 320 MMscfgd (266 MMscfgd when third-party constraints apply), producing from nine wells with the final production well to be drilled.
Abstract The Endurance, four-way, dip-closed structure in UK Blocks 42/25 and 43/21 occurs over a salt swell diapir and within Triassic and younger strata. The Lower Triassic Bunter Sandstone Formation reservoir within the structure was tested twice for natural gas (in 1970 and 1990) but both wells were dry. The reservoir is both thick and high quality and, as such, an excellent candidate site for subsurface CO 2 storage. In 2013 a consortium led by National Grid Carbon drilled an appraisal well on the structure and undertook an injection test ahead of a planned development of Endurance as the first bespoke storage site on the UK Continental Shelf with an expected injection rate of 2.68 × 10 6 t of dense phase CO 2 each year for 20 years. The site was not developed following the UK Government's removal of financial support for carbon capture and storage (CCS) demonstration projects, but it is hoped with the recent March 2020 Budget that government support for CCS may now be back on track.