Marathon
Neptune unit appraisal well results in the Deepwater Gulf of Mexico
Posted: 19 April 2004
Marathon Oil Corporation encountered a net oil column of approximately
114 feet in the Neptune-7 appraisal well located in the Gulf of
Mexico in Atwater Valley block 618.
The Neptune-7 well is located in 6,257 feet of water and was drilled
to a total depth of 18,714 feet. Data gathered from this well is
being analyzed with data from other Neptune wells to evaluate development
options for the field. Pre-feasibility studies into the development
of the Neptune resources are progressing and are expected to be
completed by the end of this year.
The Neptune Unit is within the Atwater Fold belt trend to the east
of the Mad Dog and Atlantis fields. The initial Neptune discovery
was made in 1995. In August of 2003, Marathon and its partners in
the Neptune Unit announced the successful Neptune-5 appraisal well,
which is located between, and downdip of the Neptune-1 and 2 wells.
The Neptune-5 well was drilled to a total measured depth of 19,142
feet and encountered more than 500 feet of net oil pay in Miocene
age zones.
Marathon holds a 30 per cent interest in the Neptune Unit, which
consists of five outer continental shelf blocks. BHP Billiton is
the operator with a 35 per cent interest, with Woodside Energy (USA)
Inc. holding 20 per cent interest and the remaining 15 per cent
held by Maxus (US) Exploration Company, a subsidiary of Repsol YPF.
For more information see http://www.marathon.com
Posted by Richard Price,
Editor Pipeline Magazine
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