Cusiana field in Colombia holds estimated recoverable reserves of as much as 1.5 billion bbl of crude oil and condensate and "additional large volumes" of gas, a unit of British Petroleum Co. plc disclosed last week. However, the full extent of reserves won't be known until more wells are drilled and field limits firmly established, BP said. BP Exploration Co. (Colombia) Ltd. and partners Total Exploratie en Produktie Mij. BY and Triton Colombia also have found a second field with their 1 Cupiagua wildcat, 15 km north and on the same license block, with reserves about one-third as large those of Cusiana (see map, OGJ, Oct. 26, p. 25...

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