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East Cameron Block 270, Offshore Louisiana: A Pleistocene Field1

By
D. S. Holland
D. S. Holland
Pennzoil Company, Houston, Texas 77017.
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Clarke E. Sutley
Clarke E. Sutley
Pennzoil Company, Houston, Texas 77017.
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R. E. Berlitz
R. E. Berlitz
Schlumberger Offshore Services, New Orleans, Louisiana 70112.
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J. A. Gilreath
J. A. Gilreath
Schlumberger Offshore Services, New Orleans, Louisiana 70112.
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Published:
January 01, 1976

Abstract

Exploration of the Plio-Pleistocene in the Gulf of Mexico since 1970 has led to the discovery of significant hydrocarbon reserves. One of the better gas fields found to date has been the East Cameron Block 270 field. Utilization of a coordinated exploitation plan with Schlumberger has allowed Pennzoil, as operator, to develop and put the Block 270 field on production in a minimum time.

The structure at Block 270 field is a north-south-trending, faulted nose at 6,000 ft (1,825 m). At the depth of the “G” sandstone (8,700 ft or 2,650 m), the structure is closed; it is elongated north-south and dips in all directions from the Block 270 area. Closure is the result of contemporaneous growth of the east-bounding regional fault.

Structural and stratigraphic interpretations from dipmeters were used to determine the most favorable offset locations. The producing zones consist of various combinations of barlike, channel-like, and distributary-front sandstones. The sediment source for most of the producing zones was southwest of the area, except for two zones which derived their sediments from the north through a system of channels paralleling the east-bounding fault.

Computed logs were used to convert conventional logging measurements into a more readily usable form for evaluation. The computed results were used for reserve calculations, reservoir-quality determinations, and confirmation of depositional environments as determined from other sources.

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Contents

AAPG Memoir

North American Oil and Gas Fields

Jules Braunstein
Jules Braunstein
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American Association of Petroleum Geologists
Volume
24
ISBN electronic:
9781629812106
Publication date:
January 01, 1976

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