A unit of Exxon Corp. has increased its acreage holdings off Angola.
Esso Exploration Angola (Block 15) Ltd. signed a production sharing agreement with state owned Sonangol covering Block 15 in the Atlantic Ocean, about 80 miles off Soyo.
Esso will operate the tract with a 40% interest. Its partners are BP Exploration (Angola) Ltd. 26-2/3%, Agip Angola Ltd. 20%, and Norway's Den norske stats oljeselskap AS 13-1/3%.
Seismic surveys are to get under way this fall. No further information was disclosed on work commitments for exploration and development.
Esso also holds 20% interests in Blocks 16 and 17, operated by units of Royal Dutch/Shell Group and Ste. Nationale Elf Aquitaine, respectively.
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