I was looking thru some pics of the GOM on this link
[link to www.rigzone.com]
came across this pic on the last page of pics
Deep Water GOM Discoveries
[link to www.rigzone.com]

Got to looking at the locations of the devils tower and the Coulomb, you can see for yourself where they are.
Did some digging on the Coulomb, found this..
The Na Kika field extends over Missisipi Canyon blocks 474, 429, 657, 607, 522, 520, 383 in the Gulf of Mexico, approximately 140 miles south-east of New Orleans, Louisiana, US. It has recoverable reserves of 300 million barrels of oil equivalent and a production rate of around 110,000bpd oil and 500 million cubic feet of gas a day.
COULOMB FIELD

A sixth field, Coulomb, (100% Shell) lies in Mississippi Canyon Block 657 in a water depth of approximately 7,600ft. It is approximately 25 miles east of the Na Kika production host facilities
BP / Shell commissioned a 75-mile Na Kika segment of the Okeanos Gas Gathering System from Na Kika to Main Pass 260. From here, the gas is transported to onshore markets via the BP / Shell Destin pipeline system ..............
NEW WELLS

In late 2007 and early 2008, two wells were added to the existing Na Kika fields. The Isabela discovery is expected to be tied back to Nakika field in 2011.

In June 2009, ClampOn, a supplier of sand monitoring for Shell, secured the order for various subsea sand monitors and pig detectors for the Isabela field.

Development in 6,500ft (1,980m) of water will come on-stream in the first quarter of 2011 through tieback to the Na Kika field. ClampOn has supplied acoustic subsea sensors with atmospheric and high-pressure chambers, pipe contact verification, electronic beam welding and dual independent electronics.

[link to www.offshore-technology.com]

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Follow the links here, article sheds more light on some "discoveries"....part of all of this mess down there???