A. D. Koen Gulf Coast News Editor Gulf of Mexico operators are drilling two subsalt wildcats with big implications for the region's petroleum prospectivity. If successful, the Mahogany prospect on Ship Shoal Block 349 and the Mattaponi prospect on South Marsh Island Block 169 by yearend could spawn a major subsalt exploration play in the gulf. Mahogany operator Phillips Petroleum Co. and Mattaponi operator Amoco Production Co. say upside potentials of the two subsalt tests are among the best exploratory targets in the world. And by some estimates, large horizontal, allochthonous salt sheets could be concealing oil and gas...

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