- Abstract
- Affiliation
- All
- Authors
- Book Series
- DOI
- EISBN
- EISSN
- Full Text
- GeoRef ID
- ISBN
- ISSN
- Issue
- Keyword (GeoRef Descriptor)
- Meeting Information
- Report #
- Title
- Volume
- Abstract
- Affiliation
- All
- Authors
- Book Series
- DOI
- EISBN
- EISSN
- Full Text
- GeoRef ID
- ISBN
- ISSN
- Issue
- Keyword (GeoRef Descriptor)
- Meeting Information
- Report #
- Title
- Volume
- Abstract
- Affiliation
- All
- Authors
- Book Series
- DOI
- EISBN
- EISSN
- Full Text
- GeoRef ID
- ISBN
- ISSN
- Issue
- Keyword (GeoRef Descriptor)
- Meeting Information
- Report #
- Title
- Volume
- Abstract
- Affiliation
- All
- Authors
- Book Series
- DOI
- EISBN
- EISSN
- Full Text
- GeoRef ID
- ISBN
- ISSN
- Issue
- Keyword (GeoRef Descriptor)
- Meeting Information
- Report #
- Title
- Volume
- Abstract
- Affiliation
- All
- Authors
- Book Series
- DOI
- EISBN
- EISSN
- Full Text
- GeoRef ID
- ISBN
- ISSN
- Issue
- Keyword (GeoRef Descriptor)
- Meeting Information
- Report #
- Title
- Volume
- Abstract
- Affiliation
- All
- Authors
- Book Series
- DOI
- EISBN
- EISSN
- Full Text
- GeoRef ID
- ISBN
- ISSN
- Issue
- Keyword (GeoRef Descriptor)
- Meeting Information
- Report #
- Title
- Volume
NARROW
GeoRef Subject
-
all geography including DSDP/ODP Sites and Legs
-
Africa
-
West Africa
-
Liberia (1)
-
-
West African Shield (1)
-
-
Atlantic Ocean
-
North Atlantic
-
Caribbean Sea
-
Venezuelan Basin (2)
-
-
-
-
Atlantic region (1)
-
Canada
-
Western Canada
-
Alberta (1)
-
Saskatchewan (1)
-
-
-
Caribbean region
-
West Indies
-
Antilles
-
Greater Antilles (1)
-
-
-
-
Central America
-
Costa Rica (1)
-
-
Europe
-
Alps
-
Western Alps (1)
-
-
Carpathians (1)
-
Central Europe
-
Poland (1)
-
-
Southern Europe
-
Italy
-
Apennines
-
Southern Apennines (1)
-
-
-
-
Western Europe
-
France (1)
-
-
-
Llanos (1)
-
South America
-
Andes
-
Eastern Cordillera (1)
-
Northern Andes (1)
-
-
Colombia
-
Magdalena Valley (1)
-
-
Ecuador (1)
-
Guiana Shield (1)
-
Oriente Basin (1)
-
Orinoco River (2)
-
Venezuela
-
Anzoategui Venezuela
-
Oficina (1)
-
-
Eastern Venezuela (22)
-
Guarico Venezuela (1)
-
Lake Maracaibo (1)
-
Merida Venezuela (1)
-
Monagas Venezuela (1)
-
Orinoco Belt (2)
-
Orinoco Delta (1)
-
Venezuelan Islands (1)
-
-
-
United States (1)
-
-
commodities
-
bitumens (1)
-
oil and gas fields (7)
-
petroleum
-
natural gas (2)
-
-
-
elements, isotopes
-
carbon
-
C-13/C-12 (1)
-
organic carbon (1)
-
-
isotope ratios (2)
-
isotopes
-
stable isotopes
-
C-13/C-12 (1)
-
O-18/O-16 (1)
-
-
-
metals
-
actinides
-
thorium (1)
-
uranium (1)
-
-
rare earths
-
lanthanum (1)
-
scandium (1)
-
-
titanium (1)
-
vanadium (1)
-
-
oxygen
-
O-18/O-16 (1)
-
-
-
fossils
-
Invertebrata
-
Protista
-
Foraminifera (1)
-
-
-
microfossils (2)
-
palynomorphs
-
Dinoflagellata (1)
-
-
-
geochronology methods
-
Ar/Ar (1)
-
paleomagnetism (1)
-
Rb/Sr (1)
-
-
geologic age
-
Cenozoic
-
Tertiary
-
Neogene
-
Miocene
-
lower Miocene (1)
-
Oficina Formation (5)
-
-
Pliocene (1)
-
-
Paleogene
-
Eocene
-
upper Eocene (1)
-
-
Oligocene (2)
-
-
-
-
Mesozoic
-
Cretaceous
-
Upper Cretaceous
-
La Luna Formation (1)
-
-
-
-
Precambrian
-
upper Precambrian
-
Proterozoic (1)
-
-
-
-
igneous rocks
-
igneous rocks
-
plutonic rocks
-
granites (1)
-
-
volcanic rocks
-
basalts
-
alkali basalts
-
spilite (1)
-
-
tholeiite (1)
-
-
-
-
-
metamorphic rocks
-
metamorphic rocks
-
amphibolites (1)
-
-
-
minerals
-
silicates
-
chain silicates
-
pyroxene group
-
clinopyroxene (1)
-
-
-
sheet silicates
-
clay minerals
-
kaolinite (1)
-
-
illite (1)
-
-
-
-
Primary terms
-
absolute age (1)
-
Africa
-
West Africa
-
Liberia (1)
-
-
West African Shield (1)
-
-
Atlantic Ocean
-
North Atlantic
-
Caribbean Sea
-
Venezuelan Basin (2)
-
-
-
-
Atlantic region (1)
-
bitumens (1)
-
Canada
-
Western Canada
-
Alberta (1)
-
Saskatchewan (1)
-
-
-
carbon
-
C-13/C-12 (1)
-
organic carbon (1)
-
-
Caribbean region
-
West Indies
-
Antilles
-
Greater Antilles (1)
-
-
-
-
Cenozoic
-
Tertiary
-
Neogene
-
Miocene
-
lower Miocene (1)
-
Oficina Formation (5)
-
-
Pliocene (1)
-
-
Paleogene
-
Eocene
-
upper Eocene (1)
-
-
Oligocene (2)
-
-
-
-
Central America
-
Costa Rica (1)
-
-
clay mineralogy (1)
-
continental drift (1)
-
deformation (3)
-
diagenesis (1)
-
economic geology (3)
-
Europe
-
Alps
-
Western Alps (1)
-
-
Carpathians (1)
-
Central Europe
-
Poland (1)
-
-
Southern Europe
-
Italy
-
Apennines
-
Southern Apennines (1)
-
-
-
-
Western Europe
-
France (1)
-
-
-
faults (6)
-
folds (1)
-
geochemistry (1)
-
geophysical methods (7)
-
heat flow (1)
-
igneous rocks
-
plutonic rocks
-
granites (1)
-
-
volcanic rocks
-
basalts
-
alkali basalts
-
spilite (1)
-
-
tholeiite (1)
-
-
-
-
Invertebrata
-
Protista
-
Foraminifera (1)
-
-
-
isotopes
-
stable isotopes
-
C-13/C-12 (1)
-
O-18/O-16 (1)
-
-
-
Mesozoic
-
Cretaceous
-
Upper Cretaceous
-
La Luna Formation (1)
-
-
-
-
metals
-
actinides
-
thorium (1)
-
uranium (1)
-
-
rare earths
-
lanthanum (1)
-
scandium (1)
-
-
titanium (1)
-
vanadium (1)
-
-
metamorphic rocks
-
amphibolites (1)
-
-
oil and gas fields (7)
-
orogeny (2)
-
oxygen
-
O-18/O-16 (1)
-
-
paleogeography (2)
-
paleomagnetism (1)
-
palynomorphs
-
Dinoflagellata (1)
-
-
petroleum
-
natural gas (2)
-
-
petrology (1)
-
plate tectonics (5)
-
Precambrian
-
upper Precambrian
-
Proterozoic (1)
-
-
-
sedimentary petrology (1)
-
sedimentary rocks
-
clastic rocks
-
black shale (1)
-
sandstone (5)
-
shale (1)
-
-
coal
-
lignite (1)
-
-
oil sands (2)
-
-
sedimentary structures
-
biogenic structures
-
lebensspuren (1)
-
-
-
sedimentation (2)
-
sediments (1)
-
South America
-
Andes
-
Eastern Cordillera (1)
-
Northern Andes (1)
-
-
Colombia
-
Magdalena Valley (1)
-
-
Ecuador (1)
-
Guiana Shield (1)
-
Oriente Basin (1)
-
Orinoco River (2)
-
Venezuela
-
Anzoategui Venezuela
-
Oficina (1)
-
-
Eastern Venezuela (22)
-
Guarico Venezuela (1)
-
Lake Maracaibo (1)
-
Merida Venezuela (1)
-
Monagas Venezuela (1)
-
Orinoco Belt (2)
-
Orinoco Delta (1)
-
Venezuelan Islands (1)
-
-
-
stratigraphy (2)
-
tectonics (3)
-
tectonophysics (1)
-
United States (1)
-
well-logging (3)
-
-
rock formations
-
Lagunillas Formation (1)
-
-
sedimentary rocks
-
sedimentary rocks
-
clastic rocks
-
black shale (1)
-
sandstone (5)
-
shale (1)
-
-
coal
-
lignite (1)
-
-
oil sands (2)
-
-
-
sedimentary structures
-
sedimentary structures
-
biogenic structures
-
lebensspuren (1)
-
-
-
-
sediments
-
sediments (1)
-
Eastern Venezuela
Tectonic evolution of petroleum systems within the onshore Llanos Basin: Insights on the presence of Orinoco heavy oil analogs in Colombia and a comparison with other heavy oil provinces worldwide
Integrated charge and seal assessment in the Monagas fold and thrust belt of Venezuela
Integration of rock physics, seismic inversion, and support vector machines for reservoir characterization in the Orinoco Oil Belt, Venezuela
Animal–Substrate Interactions in an Early Miocene Wave-Dominated Tropical Delta: Delineating Environmental Stresses and Depositional Dynamics (Tácata Field, Eastern Venezuela)
Impacting the bottom line of field performance : Joint reservoir studies in three Venezuelan oil fields
Abstract The main focus of this study is the origin of the paleofluids in the Late Cretaceous–Oligocene sandstone reservoirs of the El Furrial structure (Venezuela). Basin modeling was performed using Thrustpack®, Locace®, and Ceres® tools. The temperature and nature of the fluids obtained by this modeling were compared to fluid inclusions and oxygen isotope data on quartz overgrowth. Four stages should be considered in this area: (1) From 65 to 20 Ma: Fluids were at thermal equilibrium with the sediments. They were continuously expelled vertically toward the surface during compaction-driven dewatering processes. (2) From 20 to 12 Ma: As a result of the regional tilting and the deposition of the synflexural Naricual Formation, the Cretaceous and Oligocene sandstones of the El Furrial structure became efficient conduits for fluids circulating from the north. These fluids were at thermal equilibrium with the Cretaceous and Oligocene sandstones and seem to be correlated with the first generation of quartz overgrowths. This episode is characterized by an increase in the overpressure of the Oligocene and Upper Cretaceous sandstones that is correlated to a hydraulic fracturing of the sealing Carapita black shales. (3) From 12 to 8 Ma: Fluids were expelled laterally from the Cretaceous sediments of the Pirital hanging-wall unit that is located immediately north of the El Furrial structure. These fluids were likely in chemical disequilibrium, and their temperature was higher than the temperature of adjacent sediments, which probably resulted in additional but minor episodes of quartz precipitation. This hypothesis is consistent with the information obtained from oxygen isotope analyses, which suggest that subsequent generations of quartz cement probably formed from evolved basinal fluids. (4) A reduction of the intensity of the flow and then an inversion of this flow mark the sealing of the southern structural closure of the structure at about 8 Ma. Then, the closure of the northern flank occured at about 5 Ma, as indicated by a present velocity of the fluids close to zero in the El Furrial reservoirs and the filling of the structure by the hydrocarbons.