By OGJ editors
HOUSTON, Nov. 23 – A group led by Quetzal Energy Ltd., Calgary, has tested 20.7° gravity oil at the rate of 2,225 b/d from Lower Mirador at a discovery well in Colombia’s Llanos basin.
The Canaguay-1 well on the Canaguaro block went to 15,850 ft total depth. Upper Mirador, which had the majority of the indicated oil pay on well logs, is to be tested in coming weeks. The company has run cased-hole drillstem tests on several formations.
Une/Lower sandstone at 15,469-484 ft flowed gas too small to measure, and the pressure data indicated relatively poor permeability. Quetzel reverse-circulated 50 bbl of 37° gravity oil after the test. Une/Gacheta at 15,353-359 ft indicated poor permeability and recovered a small sample of 27.4° gravity oil.
Gacheta at 15,231-248 ft indicated poor permeability, and no hydrocarbons were recovered. Barco at 14,724-736 ft indicated fair zonal permeability but produced no hydrocarbons.
Quetzal perforated Lower Mirador at 14,292-297 ft, ran coiled tubing to 6,000 ft, and pumped 500 scf/min of nitrogen to remove the fluid cushion and achieve a 17% drawdown. Fluid production rates averaged 2,225 b/d of 20.7° gravity oil with a trace of water.
Quetzal is block operator with 25% working interest. Condor Exploration Inc. has 50%, and a unit of Brownstone Ventures Inc. has 25%.
Photo from Esso SAF.
Map from Petrobras.
