Sedimentologic and stratigraphic framework of some modern crevasse splay sands
A series of cores taken along strike and dip transects through the Baptiste Collette crevasse splay, modern Mississippi River delta, have been analyzed to determine the sedimentologic nature and potential reservoir quality of modern crevasse splay sands. Internal geometry, lateral and vertical continuity, and sedimentary characteristics were determined to construct a model of crevasse splay depositional systems applicable to hydrocarbon exploration. Channel sands have the greatest reservoir potential, being more laterally continuous along dip, clean (5% silt and clay), well sorted fine-grained and more homogeneous, with few permeability barriers (i.e., mud layers and laminae). Conversely, the shallower bar and levee deposits have poorer reservoir quality, being less clean, less continuous laterally along dip, and with more permeability barriers. It is felt that this study will complement the limited knowledge of modern crevasse splay systems as well as provide insights into the exploration or enhanced recovery of hydrocarbons in ancient equivalents, such as the Admire 650' Sandstone of Kansas.
- Research Organization:
- Louisiana Geological Survey, Baton Rouge
- OSTI ID:
- 6609038
- Report Number(s):
- CONF-8405216-
- Journal Information:
- Am. Assoc. Pet. Geol., Bull.; (United States), Journal Name: Am. Assoc. Pet. Geol., Bull.; (United States) Vol. 68:4; ISSN AAPGB
- Country of Publication:
- United States
- Language:
- English
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ALLUVIAL DEPOSITS
FEDERAL REGION VI
GEOLOGIC DEPOSITS
GEOLOGIC TRAPS
GEOLOGY
LOUISIANA
NORTH AMERICA
PERMEABILITY
RESERVOIR ROCK
ROCKS
SEDIMENTARY ROCKS
SEDIMENTATION
STRATIGRAPHY
USA