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NARROW
GeoRef Subject
-
all geography including DSDP/ODP Sites and Legs
-
Africa
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Central Africa
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Gabon (1)
-
-
Southern Africa
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Karoo Basin (1)
-
-
West Africa
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Niger River (1)
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Nigeria
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Niger Delta (2)
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Arctic Ocean
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Greenland
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Asia
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Qatar (1)
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Saudi Arabia
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Ghawar Field (1)
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Central Asia
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Kazakhstan
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Tengiz Field (1)
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Far East
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China
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Liaoning China
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Utah
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Western U.S. (1)
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Wilmington Field (1)
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commodities
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brines (1)
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oil and gas fields (59)
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petroleum
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tight sands (2)
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elements, isotopes
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carbon
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C-13/C-12 (7)
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organic carbon (1)
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hydrogen
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D/H (2)
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isotope ratios (10)
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isotopes
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radioactive isotopes
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Re-187/Os-188 (1)
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stable isotopes
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C-13/C-12 (7)
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D/H (2)
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O-18/O-16 (3)
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Os-188/Os-187 (2)
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Re-187/Os-188 (1)
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S-34/S-32 (1)
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Sr-87/Sr-86 (1)
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metals
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rare earths (1)
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Re-187/Os-188 (1)
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nitrogen (2)
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O-18/O-16 (3)
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sulfur
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fossils
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microfossils (1)
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Plantae
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geochronology methods
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geologic age
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Cenozoic
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Agbada Formation (1)
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Quaternary
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Tertiary
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middle Miocene (2)
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Oficina Formation (1)
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Pliocene
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lower Pliocene (1)
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Paleogene
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Eocene
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lower Eocene
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Ypresian (2)
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Oligocene
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Fontainebleau Sandstone (1)
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Paleocene
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upper Paleocene
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Thanetian (1)
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Mesozoic
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Cretaceous
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Lower Cretaceous
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Albian (1)
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Mannville Group (1)
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McMurray Formation (2)
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Zubair Formation (1)
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Nanushuk Group (1)
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Upper Cretaceous
-
Cardium Formation (1)
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Cenomanian (1)
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Maestrichtian (1)
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-
-
Jurassic
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Heather Formation (1)
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Kingak Shale (1)
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Lower Jurassic
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Dunlin Group (1)
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Nordegg Member (1)
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Middle Jurassic
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Bajocian
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Brent Group (2)
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Broom Formation (1)
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Ness Formation (1)
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Rannoch Formation (1)
-
-
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Norphlet Formation (1)
-
Upper Jurassic
-
Arab Formation (1)
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Fulmar Formation (1)
-
Kimmeridge Clay (2)
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Kimmeridgian (1)
-
Smackover Formation (1)
-
-
-
Triassic
-
Shublik Formation (1)
-
Upper Triassic
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Sag River Sandstone (1)
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Yanchang Formation (2)
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-
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-
Paleozoic
-
Berea Sandstone (1)
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Cambrian (1)
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Carboniferous
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Mississippian
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Madison Group (1)
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Mission Canyon Limestone (1)
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Pennsylvanian
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Lower Pennsylvanian
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Morrowan (1)
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Upper Pennsylvanian
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Cisco Group (1)
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Lansing Group (1)
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Devonian
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Upper Devonian
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Frasnian
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Leduc Formation (1)
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Nisku Formation (1)
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Exshaw Formation (1)
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Lisburne Group (1)
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Ordovician
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Upper Ordovician
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Red River Formation (1)
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-
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Permian
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Ecca Group (1)
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Glorieta Sandstone (1)
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Guadalupian
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Cherry Canyon Formation (1)
-
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Khuff Formation (1)
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Lower Permian
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Cherry Canyon Formation (1)
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Leonardian
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Clear Fork Group (1)
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-
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Phosphoria Formation (1)
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Upper Permian
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Zechstein (1)
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Tensleep Sandstone (1)
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igneous rocks
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metamorphic rocks
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minerals
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oxides
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silicates
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opal
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opal-A (2)
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quartz (3)
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sheet silicates
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clay minerals
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illite (1)
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sulfides
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greigite (1)
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iron sulfides (1)
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-
-
Primary terms
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absolute age (1)
-
Africa
-
Central Africa
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Gabon (1)
-
-
Southern Africa
-
Karoo Basin (1)
-
-
West Africa
-
Niger River (1)
-
Nigeria
-
Niger Delta (2)
-
-
-
-
Arctic Ocean
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Barents Sea (2)
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Norwegian Sea
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Haltenbanken (1)
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Arctic region
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Greenland
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East Greenland (1)
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-
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Asia
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Arabian Peninsula
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Qatar (1)
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Saudi Arabia
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Ghawar Field (1)
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-
-
Central Asia
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Kazakhstan
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Tengiz Field (1)
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-
-
Far East
-
China
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Heilongjiang China
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Daqing Field (1)
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Inner Mongolia China
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Erlian Basin (1)
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Liaoning China
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Liaohe Field (1)
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Ordos Basin (2)
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Sichuan Basin (1)
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Xinjiang China
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Junggar Basin (2)
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Kuqa Depression (1)
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Tarim Basin (3)
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Thailand (1)
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Indian Peninsula
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India (1)
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Middle East
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Iraq (1)
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Zagros (1)
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Atlantic Ocean
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East Atlantic (1)
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North Atlantic
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Gulf of Mexico
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Eugene Island Block 330 Field (1)
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Sigsbee Escarpment (1)
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North Sea
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East Shetland Basin (1)
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Ekofisk Field (3)
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Gullfaks Field (1)
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Oseberg Field (1)
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Troll Field (1)
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Viking Graben (2)
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-
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South Atlantic
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Santos Basin (1)
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Australasia
-
Australia
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Carnarvon Basin (1)
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bitumens
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asphalt (5)
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brines (1)
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Canada
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Western Canada
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Alberta
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Alberta Basin (2)
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Athabasca Oil Sands (1)
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Saskatchewan (1)
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carbon
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C-13/C-12 (7)
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organic carbon (1)
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Cenozoic
-
Agbada Formation (1)
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Quaternary
-
Pleistocene (1)
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-
Tertiary
-
Neogene
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Miocene
-
Guantao Formation (1)
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lower Miocene (1)
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middle Miocene (2)
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Oficina Formation (1)
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upper Miocene (1)
-
-
Pliocene
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lower Pliocene (1)
-
-
-
Paleogene
-
Eocene
-
lower Eocene
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Ypresian (2)
-
-
-
Oligocene
-
Fontainebleau Sandstone (1)
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Paleocene
-
upper Paleocene
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Thanetian (1)
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clay mineralogy (1)
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faults (17)
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hydrology (1)
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inclusions
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Indian Ocean
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Re-187/Os-188 (1)
-
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stable isotopes
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C-13/C-12 (7)
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D/H (2)
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O-18/O-16 (3)
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Os-188/Os-187 (2)
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Re-187/Os-188 (1)
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S-34/S-32 (1)
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Sr-87/Sr-86 (1)
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marine installations (1)
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Mesozoic
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Cretaceous
-
Lower Cretaceous
-
Albian (1)
-
Aptian (2)
-
Mannville Group (1)
-
McMurray Formation (2)
-
Zubair Formation (1)
-
-
Nanushuk Group (1)
-
Upper Cretaceous
-
Cardium Formation (1)
-
Cenomanian (1)
-
Maestrichtian (1)
-
-
-
Jurassic
-
Heather Formation (1)
-
Kingak Shale (1)
-
Lower Jurassic
-
Dunlin Group (1)
-
Nordegg Member (1)
-
-
Middle Jurassic
-
Bajocian
-
Brent Group (2)
-
Broom Formation (1)
-
Ness Formation (1)
-
Rannoch Formation (1)
-
-
-
Norphlet Formation (1)
-
Upper Jurassic
-
Arab Formation (1)
-
Fulmar Formation (1)
-
Kimmeridge Clay (2)
-
Kimmeridgian (1)
-
Smackover Formation (1)
-
-
-
Triassic
-
Shublik Formation (1)
-
Upper Triassic
-
Sag River Sandstone (1)
-
Yanchang Formation (2)
-
-
-
-
metals
-
alkaline earth metals
-
strontium
-
Sr-87/Sr-86 (1)
-
-
-
platinum group
-
osmium
-
Os-188/Os-187 (2)
-
Re-187/Os-188 (1)
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rare earths (1)
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rhenium
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Re-187/Os-188 (1)
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metasomatism (1)
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nitrogen (2)
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North America
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Canadian Shield (1)
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Western Canada Sedimentary Basin (2)
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Williston Basin (4)
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ocean floors (1)
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oil and gas fields (59)
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orogeny (1)
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oxygen
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O-18/O-16 (3)
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paleogeography (1)
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paleomagnetism (1)
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Paleozoic
-
Berea Sandstone (1)
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Cambrian (1)
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Carboniferous
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Mississippian
-
Madison Group (1)
-
Mission Canyon Limestone (1)
-
-
Pennsylvanian
-
Lower Pennsylvanian
-
Morrowan (1)
-
-
Upper Pennsylvanian
-
Cisco Group (1)
-
Missourian
-
Kansas City Group (1)
-
Lansing Group (1)
-
-
-
-
-
Devonian
-
Upper Devonian
-
Frasnian
-
Leduc Formation (1)
-
-
Nisku Formation (1)
-
-
-
Exshaw Formation (1)
-
Lisburne Group (1)
-
Ordovician
-
Upper Ordovician
-
Red River Formation (1)
-
-
-
Permian
-
Ecca Group (1)
-
Glorieta Sandstone (1)
-
Guadalupian
-
Cherry Canyon Formation (1)
-
-
Khuff Formation (1)
-
Lower Permian
-
Cherry Canyon Formation (1)
-
Leonardian
-
Clear Fork Group (1)
-
-
-
Phosphoria Formation (1)
-
Upper Permian
-
Zechstein (1)
-
-
-
Tensleep Sandstone (1)
-
-
paragenesis (4)
-
petroleum
-
natural gas
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shale gas (1)
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shale oil (1)
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Plantae
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algae
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nannofossils (1)
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plate tectonics (1)
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pollution (4)
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sea-level changes (6)
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sedimentary rocks
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carbonate rocks
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limestone (4)
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packstone (1)
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chemically precipitated rocks
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salt (1)
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phosphate rocks (1)
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clastic rocks
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arenite
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conglomerate (2)
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mudstone (8)
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shale (6)
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sedimentary structures
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bioturbation (2)
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planar bedding structures
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secondary structures
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soft sediment deformation
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sandstone dikes (1)
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sediments
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clastic sediments
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clay (2)
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kaolin (1)
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mud (1)
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sand (2)
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silt (1)
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soil mechanics (1)
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South America
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Colombia (1)
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Venezuela (1)
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spectroscopy (3)
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S-34/S-32 (1)
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tectonics
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salt tectonics (1)
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United States
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Alabama
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Alaska
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National Petroleum Reserve Alaska (1)
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Prudhoe Bay Field (2)
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Umiat Field (1)
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California
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Kern County California
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Lost Hills Field (1)
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Los Angeles County California (1)
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Midway-Sunset Field (1)
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Louisiana (2)
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oil-water interface
Secondary migration of heavy oil in low dip basins
Characterization of Residual Oil Distribution in Sandstone by NMR: A Microscopic View on Oil Recovery by Miscible CO 2 Flooding
The Influence of Pore Structure of the Core-Scale Fracture-Controlled Matrix Unit on Imbibition: Model Construction and Definition of the Fractal Coefficient
The Effect of Alkaline on the Properties of Combination Flooding Agent During Long Distance Migration in Daqing Oilfield
Comprehensive Investigation of the Petrophysical and Two-Phase Flow Properties of the Tight Sandstone in Yanchang Formation, Ordos Basin, China: Insights from Computed Tomography Imaging and Pore Scale Modelling
Effect of Polar Molecule Aggregation on the Stability of Crude Oil/Water Interface: A Molecular Simulation Study
Identification of magnetic enhancement at hydrocarbon-fluid contacts
Seepage Characteristics of a Low Permeability Sandstone Reservoir in Mobei Oilfield, Junggar Basin
Influence of Pore Throat Structure and the Multiphases Fluid Seepage on Mobility of Tight Oil Reservoir
The impact of heterogeneous salt velocity models on the gross rock volume estimation: an example from the Santos Basin pre-salt, Brazil
Characterization of five unconventional diatomaceous (opal-A) reservoirs, Monterey Formation, San Joaquin Valley, California
Timing and origin of multiple petroleum charges in the Solveig oil field, Norwegian North Sea: A rhenium-osmium isotopic study
The Blane Field, Block 30/3a, UK North Sea
Abstract The Blane Field is located in the central North Sea in Block 30/3a (Licence P.111), approximately 130 km SE of the Forties Field, in a water depth of 75 m (246 ft). It straddles the UK/Norway median line with 82% of the field in the UK and 18% in Norway. Blane produces undersaturated oil from the Upper Forties Sandstone Member of the Sele Formation and contains good quality light oil within a four-way structural closure; it has a hydrodynamically tilted original oil–water contact. The field stock-tank oil initially in place estimate is 93 MMbbl with an expected ultimate recovery of 33 MMbbl. Blane first oil was achieved in September 2007. The field has been developed by two horizontal producers located on the central crest of the field supported by a water injector drilled on the NW flank. Oil production peaked at c. 17 000 bopd in 2007 and the field is currently in decline. By the end of 2018 production was c. 3000 bopd with 55% water-cut. Cumulative oil production to the end of 2018 was 26.6 MMbbl.
The Brechin Field, Block 22/23a, UK North Sea
Abstract The Brechin Field was discovered by Paladin Resources in 2004. The reservoir is the Paleocene Forties Sandstone Member, with oil trapped in a small dip closure. The prospect was identified as a bright anomaly on a fluid volume processed as part of a 4D survey. However, the anomaly was not consistent with rock physics modelling, and an earlier processed version of the baseline 3D survey showed the opposite response to the 4D datasets. It was established that the fluid anomaly on the 4D data resulted from constructive interference between reflections from the oil–water contact and from top reservoir. Thus, both versions of the data were responding to the presence of hydrocarbons. The discovery well, 22/23a-7, encountered 137 ft of gross oil-bearing reservoir. Without testing or further appraisal, the field was developed in 2005 with a single production well tieback to the Arbroath platform, via the production manifold at Arkwright Field. Brechin is now operated by Repsol Sinopec Resources and cumulative production to mid-2018 was 4.4 MMbbl. Seismic attributes and well-developed reservoir understanding from neighbouring analogue fields permitted the necessary de-risking of hydrocarbon presence, recovery and volumetric uncertainty, to permit the development of an otherwise economically marginal resource.
The Wood, Cayley, Godwin and Shaw fields, Blocks 22/17s, 22/18a and 22/22a, UK North Sea
Abstract The Upper Jurassic Wood, Godwin, Shaw and Cayley fields lie in Quadrant 22 on the Forties–Montrose High (FMH), a major intra-basinal high bisecting the Central Graben. The Wood Field was the first to be discovered in 1996 by Amoco. The field was later developed by Talisman Energy in 2007 via a single subsea horizontal producer tied back to the Montrose Alpha Platform. The Cayley, Godwin and Shaw discoveries followed during a drilling campaign carried out by Talisman Energy between 2007 and 2009 and were later developed, with the last field coming online in 2017. The fields are all complex structural and stratigraphic traps with reservoir in the Fulmar Formation. The Fulmar Formation on the FMH records an overall transgression, becoming progressively younger updip, with each field exhibiting a different diagenetic and depositional history in response to the unique evolution of the inter-pod in which they reside. The combined oil in place for the fields is currently estimated at 222 MMboe with an expected ultimate recovery of 84 MMboe. The addition of these reserves has been instrumental in helping to extend the life of the Montrose and Arbroath Platforms beyond 2030.
Abstract The Blake Field is subdivided into two discrete parts, the ‘Channel’ and the ‘Flank’ areas. The two areas are geologically different but also reflect the different levels of maturity in terms of their development. Blake Channel was discovered in 1998, with first production commencing in 2001. Blake Flank was discovered in 1974 and developed in 2003. The field contains saturated light oil, with a field-wide oil–water contact and two significant gas caps. The reservoir comprises deep-water turbidite sands of Lower Cretaceous age. The combination of complex depositional environment and dynamic data resulted in the decision in 2016, to create a new model incorporating a fully integrated approach to subsurface evaluation and modelling. The latest work summarized in this paper incorporates a new geological interpretation along with the addition of aquifer extensions to capture depletion from offset fields, and a palaeo-oil leg, to help limit aquifer influx and improve history match. 4D seismic has also been incorporated to support the evaluation. Blake Channel and Flank have oil-in-place of 230 MMbbl and 300 MMbbl and have produced 94 MMbl and 15 MMbbl, respectively, to date.
The Dunlin, Dunlin SW, Osprey and Merlin fields, Blocks 211/23 and 211/24, UK North Sea
Abstract Located 160 km NE of the Shetland Islands in the East Shetland Basin, the Dunlin Cluster comprises four produced fields, Dunlin, Dunlin SW, Osprey and Merlin, in addition to some near-field satellite discoveries, Skye and Block 6. Dunlin was discovered in July 1973 and production began in August 1978. The field was developed using a concrete gravity-base platform, Dunlin Alpha, which also served as the production facility for the rest of the Dunlin Cluster. Osprey was discovered in 1974 but not tied-in until January 1991. Dunlin SW was discovered in 1973 but not brought onto production until 1996. Merlin was discovered in February 1997 and tied-in later that same year. Fairfield Energy acquired the Dunlin Cluster in 2008, and a programme of investment and facilities improvements, primarily in fuel gas infrastructure and power generation, sought to boost water-injection rates and bolster production, thereby extending the life of the asset. Ultimately, the Dunlin Cluster ceased production on 15 June 2015 after having maximized economic hydrocarbon recovery. The total Dunlin Cluster production exceeded 500 MMbbl of oil (Dunlin and Dunlin SW, 395 MMbbl oil; Osprey, 92 MMbbl oil; and Merlin, 27 MMbbl oil).
The Hutton, NW Hutton, Q-West and Darwin fields, Blocks 211/27 and 211/28, UK North Sea
Abstract Hutton (discovered in 1973) and NW Hutton (discovered in 1975), together with Q-West (discovered in 1994) and Darwin (discovered in 1983, undeveloped), are part of a single petroleum system. The main fields were defined as two separate legal entities. Although Q–West covered multiple blocks, it was wholly developed via the Hutton platform. Together, Hutton and NW Hutton produced 328 MMbbl of oil and a small quantity of associated gas from Middle Jurassic Brent Group sandstones. The trap is a complex series of tilted fault blocks sealed by Mid–Upper Jurassic Heather and Kimmeridge Clay Formation mudstones. Oil was sourced from the Kimmeridge Clay Formation, which is mature for oil generation in the hanging walls to the field-bounding faults and deep on the footwall flanks. NW Hutton underperformed relative to Hutton. In part this was due to the poorer reservoir quality encountered at depth compared with the shallower Hutton Field but a significant component of the underperformance was due to the way in which the field was developed and then operated. Both fields contain areas of unproduced and unswept oil, with the NW Hutton portion having the largest remaining oil in place.