Chacko J. John1, Bobby L. Jones2, Brian J. Harder1, Reed J. Bourgeois1, Richard P. McCulloh1
(1) Louisiana Geological Survey, Baton Rouge, LA
(2) Louisiana Geological Survey
ABSTRACT: Field Development Case Studies: Breton Sound Blocks 32, 33, and 36, Offshore Louisiana
Field case studies provide critical information for field development and exploration. Geologic literature does not contain many papers providing basic data relative to individual oil and gas fields and such information is not easily accessible. The Breton Sound Block 32 field discovery well was completed in August 1949 and since then 86 wells have been permitted. This field is located on a closure upthrown to a northwest striking down-to-the-basin fault. There are nine productive zones in this field ranging in depth from 4,397 ft to 9,858 ft and in age from Upper Middle Miocene through Upper Pliocene. The field has produced (1953-1998) 64,732,427 mcf of gas, 8,283,422 bbls of crude oil, 1,299,579 bbls of condensate and 5,600,465 mcf of casinghead gas. The discovery well in Breton Sound Block 33 field was completed in April 1971 and 9 wells have so far been permitted. There are two productive zones in this field ranging in depth from 13,364 ft to 16,453 ft of Middle Miocene age. The field is a domal structure downthrown to a west-northwest striking south-dipping growth fault. This field has produced 4,315,838 mcf of gas and 178,384 bbls of condensate (1971-1995). The discovery well in Breton Sound Block 36 field was completed in March 1948 and 31 wells have so far been permitted in this field. The productive interval ranges from 2,700 ft to 6,700 ft and comprises of nine productive zones. The field is located on a simple anticlinal structure with the axis trending northeast-southwest, and is a result of rollover into a large down-to-the-basin growth fault to the north. It has produced (1954-1998) 204,337,210 mcf of gas and 31,385 bbls of condensate.
AAPG Search and Discovery Article #90906©2001 AAPG Annual Convention, Denver, Colorado