Alange has deeper-pool Llanos basin strike

Eric Watkins
OGJ Oil Diplomacy Editor

LOS ANGELES, Dec. 18 – Alange Energy Corp., Toronto, reported a deeper-pool discovery in its Careto-5 development well in the Llanos basin of Colombia.

It deepened the directional well to test the Cretaceous Gacheta and Guadalupe formations and found 12 ft of net oil sand in the deeper Gacheta.

On natural flow during a production test, the Gacheta produced 34.8° gravity oil at an initial rate of 730 b/d with 0.1% bs&w. Alange said results warrant separate development of the reservoir and planned to complete the well with an electric submersible pump in the Gacheta.

Petrophysical tests of the channel-shaped Gacheta formation indicate 25% porosity with good permeability.

The Careto-5 was drilled at an inclination angle of 35° to a final depth of 8,450 ft. It found the top of the original reservoir, Oligocene Carbonera C-7 sandstones, at 6,202 ft TVD below sea level and the oil-water contact at 6,229 ft TVD, extending Careto field to the north.

The well cut the top of the Gacheta sandstones at 6,945 ft TVD.

Alange, operator of the Cubiro Block with a 60.5% working interest, is developing Careto field with the Careto-6 well and a likely twin of Careto-5 targeting remaining prospective horizons of Carbonera C-7 and Guadalupe.

The company said it plans geological studies and appraisal drilling to assess extent of the new find.

Contact Eric Watkins at

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