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Calvalley tests Kohlan, basement in Yemen

02/22/2010
Calvalley Petroleum Inc., Calgary, has tested oil and gas-condensate from fractured granitic basement and gas-condensate from Jurassic Kohlan sands at its Qarn Qaymah-2 deep exploratory well in central Yemen's Block 9 in the Masila basin.The well's estimated hydrocarbon column exceeds 380 m in fractured granitic basement in a structure larger than 37 sq km. Production tests through 27⁄8-in. tubing yielded a natural flow of 43° gravity sweet crude, 55° gravity condensate, and associated gas at fluctuating rates that reached a maximum of 2,350 b/d of oil and condensate with no formation water.A sustained rate could not be achieved due to excessive hydrostatic head (greater tha...
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