Sedimentology of the Boqueron Field, Eastern Venezuelan Basin

Conference · Mon Feb 01 04:00:00 EST 1993 · AAPG Bulletin (American Association of Petroleum Geologists); (United States)

OSTI ID:6065185

Aguado, B; Quintero, M ^[1]; Ramirez, L ^[2]

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1. Intevep S.A., Caracus (Venezuela)
2. Lagoven S.A., Monagas (Venezuela)

The Boqueron Field, located in the Carito-El Furrial-Boqueron Trend, a giant field in the Eastern Venezuelan Basin, contains an oil saturated section that comprises both Cretaceous and Tertiary strata. The description of 1300 ft of core allowed the definition of 15 lithofacies including sandy, shaly, carbonatic and even glauconitic rock types. The association of those lithofacies, together with palinological and micropaleontological data, derives in the determination of nearshore, inner to outer platform and slope environments of deposition. The sequence is a good example of a perfect major transgressive cycle as shown by the transition from nearshore bars to a turbidite assemblage through a carbonate-glauconite platform. The producing interval is restricted to nearshore marine sandstone bars and turbiditic channels since the limestones are tight. The bars are subarkosic to sublitharenitic in composition and are very strongly cemented by quartz. Clay mineralogy is formed by mixed-layer illite/smectite, and chlorite. Porosity is due to microcline and orthoclase dissolution. The turbiditic channels are quartzarenitic and most porosity is relict primary, with a contribution from carbonate and glauconite dissolution. Clay mineralogy is composed of kaolinite and chlorite. Even though this field has a high potential of production, it has been dampend by sand plugging that could be related to the environments of deposition and/or the diagenetical evolution of the rocks. Further tests have to be made in order to restrict the sand producing interval.

• OSTI ID: 6065185
• Report Number(s): CONF-930306--
• Conference Information: Journal Name: AAPG Bulletin (American Association of Petroleum Geologists); (United States) Journal Volume: 77:2
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020200* -- Petroleum-- Reserves
Geology
& Exploration
58 GEOSCIENCES
580000 -- Geosciences
ALUMINIUM COMPOUNDS
ALUMINIUM SILICATES
CARBONATE ROCKS
CLAYS
DEPOSITION
DEVELOPING COUNTRIES
ENERGY SOURCES
FOSSIL FUELS
FUELS
GEOLOGIC HISTORY
GEOLOGIC STRUCTURES
GEOLOGY
ILLITE
KAOLINITE
LATIN AMERICA
LIMESTONE
LITHOLOGY
MINERALOGY
MINERALS
OXIDE MINERALS
OXYGEN COMPOUNDS
PETROLEUM
PETROLOGY
PLUGGING
POROSITY
PRODUCTION
QUARTZ
RESOURCE POTENTIAL
ROCKS
SAND
SEDIMENTARY BASINS
SEDIMENTARY ROCKS
SEDIMENTATION
SILICATE MINERALS
SILICATES
SILICON COMPOUNDS
SMECTITE
SOURCE ROCKS
SOUTH AMERICA
VENEZUELA