High-resolution correlation of Gulf of Mexico Pliocene-Pleistocene sands
Correlating individual sands is critical to field development and reservoir management. High-resolution biostratigraphy can provide this correlation. Bioevents identified in the hemipelagic muds, provide an additional framework for calibrating seismic record sections. Applying this high-resolution data set can reduce the risk in development drilling. Regional extinction data, typically separated by hundreds or even thousands of feet, permit calibration of regional mapping horizons between which reservoir objectives most often occur. New studies in the Gulf of Mexico Pliocene-Pleistocene reveal local and semiregional signals between regional extinctions. These signals, or events, are caused by physical and/or chemical fluctuations in oceanic water masses through time. Planktonic assemblages reflect and imprint this signal on the accumulating sediments. Identifying and documenting these events is the principal behind high-resolution biostratigraphy. Plotted on electric logs and seismic sections, such signals allow for refined correlation and subdivision of sediment packages. From conventional well cuttings, the authors present high-resolution biostratigraphic analyses from two fields in the High Island and Green Canyon areas. Biostratigraphic events have been identified and local zonations established through the sand-rich productive intervals of both fields. Individual sands and sandy intervals are correlated using this technique.
- Research Organization:
- Mobil Oil Corp., Dallas, TX (USA)
- OSTI ID:
- 5925525
- Report Number(s):
- CONF-890404-
- Journal Information:
- AAPG (Am. Assoc. Pet. Geol.) Bull.; (United States), Vol. 73:3; Conference: AAPG annual convention with DPA/EMD Divisions and SEPM, San Antonio, TX, USA, 23-26 Apr 1989
- Country of Publication:
- United States
- Language:
- English
Similar Records
Sequence stratigraphy of Late Pliocene and Pleistocene sediments of northwestern Green Canyon Area/western Ewing Bank, northern Gulf of Mexico
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Related Subjects
GULF OF MEXICO
PETROLEUM DEPOSITS
EXPLORATION
RESERVOIR ROCK
CORRELATIONS
PLEISTOCENE EPOCH
PLIOCENE EPOCH
SEISMIC SURVEYS
WELL LOGGING
ATLANTIC OCEAN
CARIBBEAN SEA
CENOZOIC ERA
GEOLOGIC AGES
GEOLOGIC DEPOSITS
GEOPHYSICAL SURVEYS
MINERAL RESOURCES
QUATERNARY PERIOD
RESOURCES
SEAS
SURFACE WATERS
SURVEYS
TERTIARY PERIOD
020200* - Petroleum- Reserves
Geology
& Exploration