HOUSTON -- Mariner Energy has made discoveries with three exploration wells in the Gulf of Mexico: Heidelberg No. 1 on Green Canyon block 859, Bushwood No. 1 (formerly Geauxpher No. 3) on Garden Banks block 463, and Smoothie No. 2 on South Timbalier block 49.
Heidelberg and Bushwood are deepwater wells in water depth of approximately 5,000 ft and 2,700 ft (1,524 and 823 m), respectively. Smoothie, a deep shelf prospect acquired with Mariner's purchase of StatoilHydro's shelf assets in 2008, is in water depth of approximately 60 ft (18 m).
Heidelberg No. 1, a subsalt expanded Miocene prospect, was drilled to a total depth of nearly 30,000 ft (9,144 m), logging more than 200 ft (61 m) of net oil pay in multiple high-quality Miocene sands. Well data continues to be analyzed to determine next steps in delineating and developing what appears to be a significant discovery, the company says.
Mariner holds a 12.5% working interest in the Heidelberg discovery, which comprises Green Canyon blocks 816, 859, 860, and 903. Partners are Anadarko Petroleum Corp. (operator with 44.25%), Eni (12.5%), StatoilHydro (12%), Cobalt International Energy L.P. (9.375%), and ExxonMobil (9.375%).
Bushwood No. 1, a conventional deepwater amplitude prospect, was drilled to a total depth of nearly 25,300 ft (7,711 m), logging more than 260 ft (79 m) TVT of net gas pay in multiple sands, with more than 150 ft (46 m) TVT of net gas pay found in the deeper exploratory section.
Mariner operates Bushwood and holds a 30% working interest. Partners include Energy Resource Technology GoM Inc., a wholly-owned subsidiary of Helix Energy Solutions Group Inc. (35%), Apache Corp. (20%), Deep Gulf Energy II LLC (10%), and Deep Gulf Energy LP (5%).
Smoothie No. 2, a deep shelf prospect, was drilled to a total depth exceeding 20,100 ft (6,126 m), logging more than 200 ft (61 m) TVT of net gas pay in multiple zones, the company says. Mariner operates the well holding a 100% working interest in the discovery.