Sedimentological and petryphysical characterization of the Cogollo Group, Cretaceous, Block IX, Maracaibo Lake
Conference
·
· AAPG Bulletin (American Association of Petroleum Geologists); (United States)
OSTI ID:5941642
- Maraven S.A., Caracas (Venezuela)
- Shell Research B.V., Rijswijk (Netherlands)
The present study contains the most important results from the sedimentological and petrophysical analysis of two Cretaceous cores (SVS-225/229) located in the Block IX of Lake maracaibo, northwestern Venezuela. In order to better define and locate sites for exploratory drilling, a study was undertaken to describe calcareous facies and their relationship to matrix porosity, open fractures, sedimentary and flow units. The sedimentary units were grouped on the basis similar characteristics and vertical and horizontal extrapolation potential. They also serve as indicators to determine the major sedimentary environments and help define the sedimentological model for the section under study. The most promising calcareous facies are composed of dolomites, wackestones, packstones and grainstones. They are all related to the open fractures, their orientation and density. The flow units were determined using these characteristics together with the oil impregnation observed in the cores. Also they were found to be mainly related to the coarsening upper sedimentary sequences. The identification of these units and their correlation to neighboring areas is useful for in the effectively managing processes for the Cretaceous oil reservoirs.
- OSTI ID:
- 5941642
- 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
Similar Records
Naturally fractured reservoir description through well cutting analysis. A case study: Block IX, Lago de Maracaibo, Venezuela
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Conference
·
Tue May 01 00:00:00 EDT 1990
· AAPG Bulletin (American Association of Petroleum Geologists); (USA)
·
OSTI ID:6985096
Characterization of fracture networks applied to optimize well tracks in deep Cretaceous reservoirs of Lake Maracaibo, Venezuela
Conference
·
Thu Feb 28 23:00:00 EST 1991
· AAPG Bulletin (American Association of Petroleum Geologists); (United States)
·
OSTI ID:5575745
Facies control on oil producing, naturally fractured reservoirs, a cast study: Block I, Lake Maracaibo, Venezuela
Conference
·
Sun Jan 31 23:00:00 EST 1988
· AAPG Bull.; (United States)
·
OSTI ID:5793846
Related Subjects
02 PETROLEUM
020200* -- Petroleum-- Reserves
Geology
& Exploration
CARBON COMPOUNDS
CARBONATES
DEVELOPING COUNTRIES
DRILL CORES
EXPLORATORY WELLS
EXTRAPOLATION
GEOLOGIC FRACTURES
GEOLOGIC STRUCTURES
GEOLOGY
INDICATORS
LATIN AMERICA
NUMERICAL SOLUTION
ORIENTATION
OXYGEN COMPOUNDS
PETROLOGY
POROSITY
RESERVOIR ROCK
ROCKS
SEDIMENTARY ROCKS
SOUTH AMERICA
VENEZUELA
WELLS
020200* -- Petroleum-- Reserves
Geology
& Exploration
CARBON COMPOUNDS
CARBONATES
DEVELOPING COUNTRIES
DRILL CORES
EXPLORATORY WELLS
EXTRAPOLATION
GEOLOGIC FRACTURES
GEOLOGIC STRUCTURES
GEOLOGY
INDICATORS
LATIN AMERICA
NUMERICAL SOLUTION
ORIENTATION
OXYGEN COMPOUNDS
PETROLOGY
POROSITY
RESERVOIR ROCK
ROCKS
SEDIMENTARY ROCKS
SOUTH AMERICA
VENEZUELA
WELLS