A biostratigraphic sequence analysis in Cretaceous sediments from Eastern Venezuela

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

OSTI ID:6107967

Paredes, I; Carillo, M; Fasola, A; Luna, F ^[1]

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1. Intevep S.A., Caracas (Venezuela)

This paper presents the results of a high resolution biostratigraphic study integrated with petrophysic analyses, of the Late Cretaceous sequence in several wells from the Maturin Sub-Basin, Eastern Venezuela. The main objective of this study is to integrate the different faunal and floral assemblages to the sedimentological evolution of the basin using sequential analysis techniques. This technique was applied using mainly terrestrial and marine palynomorphs which were relatively abundant and diverse as compared to the scarcity of foraminifera and nonnofossils. Based on the percentages of abundance and the diversity of the different groups of microfoss it was possible to establish the maximum flooding surfaces and condensation levels which allowed the definition of the possible candidates for the sequence boundaries. On the other hand, the identified bioevents made possible the definition of the chronostratigraphic datums of the sequence under study. The results obtained will contribute to optimize the exploration and development programs of the oil fields in Eastern Venezuela.

• OSTI ID: 6107967
• 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

Related Subjects

02 PETROLEUM
EXPLORATION
OPTIMIZATION
SEDIMENTARY BASINS
STRATIGRAPHY
VENEZUELA
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ABUNDANCE
CRETACEOUS PERIOD
FOSSILS
OIL FIELDS
PALEONTOLOGY
PETROLEUM GEOLOGY
SEDIMENTS
DEVELOPING COUNTRIES
GEOLOGIC AGES
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MESOZOIC ERA
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