A multidisciplinary study of the complex Santa Barbara-Furrial oilfields, Northern Monagas area, Eastern Venezuela Basin
- Corpoven S.A., Puerto La Cruz (Venezuela)
A multidisciplinary study has been conducted on the giant oilfields located in the northern Monagas area of the eastern Venezuela basin. The oilfields occur in a lower tertiary and Cretaceous sequence which has been heavily tectonized as a consequence of recent transpression along the Caribbean south American plate boundary. This structurally complex area was initially mapped by using 3000 km. Of 2D seismic data. Experience has shown these data to be inadequate and a 150 sq Km 3D survey was acquired over the Santa Barbara area. These data have been interpreted and several new structural features have been identified. As a consequence of this work the structural model has been modified and applied throughout the area. The Cretaceous to late Oligocene sediments, including the Naricual formation which is the main producing horizon, has been studied systematically. These sediments were deposited initially in a fluvial environment which was gradually inundated by successive marine incursions. Approximately 7000 ft of core has been logged and the sedimentary facies and sequence boundaries recognized were then used to calibrate electric logs which allowed facies extrapolation across the whole area. The final parasequence analysis has provided a detailed and reliable reservoir correlation. Original pressure data and subsequent production histories, together with different known oil-water contacts implies separate producing areas. Complex fluid segregations, from condensates to heavy oil had also to be explained. The integration of the geophysical, geological, fluid and production data has allowed each discipline to refine their field models by removing conflicts between these data, thereby producing a better overall description of the reservoir.
- OSTI ID:
- 6107789
- Report Number(s):
- CONF-930306-; CODEN: AABUD2
- Journal Information:
- AAPG Bulletin (American Association of Petroleum Geologists); (United States), Vol. 77:2; Conference: International congress of the American Association of Petroleum Geologists (AAPG), Caracas (Venezuela), 14-17 Mar 1993; ISSN 0149-1423
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
GEOLOGIC STRUCTURES
GEOLOGIC MODELS
SEDIMENTARY BASINS
GEOMORPHOLOGY
VENEZUELA
OIL FIELDS
BOUNDARY LAYERS
CRETACEOUS PERIOD
GEOPHYSICS
PETROLEUM GEOLOGY
RESERVOIR ROCK
SEISMIC SURVEYS
TECTONICS
TERTIARY PERIOD
THREE-DIMENSIONAL CALCULATIONS
CENOZOIC ERA
DEVELOPING COUNTRIES
GEOLOGIC AGES
GEOLOGIC DEPOSITS
GEOLOGY
GEOPHYSICAL SURVEYS
LATIN AMERICA
LAYERS
MESOZOIC ERA
MINERAL RESOURCES
PETROLEUM DEPOSITS
RESOURCES
SOUTH AMERICA
SURVEYS
020200* - Petroleum- Reserves
Geology
& Exploration