Depositional patterns and structural styles-Hackberry Salt Dome, Cameron Parish, Louisiana

Conference · Sat Dec 31 04:00:00 EST 1994

OSTI ID:45218

Spencer, J A; Sharpe, C L; Gillham, T H; Wright, D N ^[1]

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1. Amoco Production Co., Houston, TX (United States)

The West and East Hackberry fields of north-central Cameron Parish, Louisiana, are associated with a large southeast-plunging salt ridge. Episodes of salt movement influenced the depositional patterns and reservoir trap styles of the Oligocene- and Miocene-age sedimentary section. The Oligocene lower Hackberry channels were influenced by the salt structure, resulting in the Manchester-Holmwood channel system flanking the east and south sides of the salt dome and the Choupique channel system flanking the west side of the salt dome. The depositional patterns and structural bed dips of the younger Oligocene Camerina A to marginulina section demonstrate a major period of salt movement and erosion. The resulting truncation of the Camerian A sandstones, sealed by overlying shales, provides the dominant trap style for the majority of the reservoirs. This same general period of salt movement influenced the orientation of the Oligocene Marginulina to Miogypsinoides expansion fault system to the east. The Sweet Lake salt dome, down through to this expansion system, probably represents a southeast extension of this ancestral salt ridge.

• OSTI ID: 45218
• Report Number(s): CONF-941065--
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
GEOLOGIC TRAPS
GEOMETRY
LOUISIANA
OIL FIELDS
PETROLEUM DEPOSITS
RESERVOIR ROCK
SALT DEPOSITS
SANDSTONES
SEISMIC DETECTION
TERTIARY PERIOD