Colombia: Llanos Balay discovery confirmed

Petroleo Brasileiro SA has confirmed its 2010 Balay oil discovery in Colombia’s Llanos basin and plans more delineation drilling in 2011.

By OGJ editors
HOUSTON, May 10
– Petroleo Brasileiro SA has confirmed its 2010 Balay oil discovery in Colombia’s Llanos basin and plans more delineation drilling in 2011.

The Balay-2 ST1 appraisal well yielded 2,620 b/d of 26° gravity oil with 9.3% BS&W that is probably completion fluid from two perforated intervals in the Upper Mirador on an electric submersible pump, said Petroamerica Oil Corp., Calgary. Petroamerica has a 15% participating interest in the Balay block.

The well also defined a deeper oil-down-to level in the Upper Mirador reservoir. Additionally, 145 bbl of 13° gravity oil and water 10-16% BS&W was recovered from the Barco Formation. No hydrocarbons were recovered from tests carried out in the Une and Gacheta reservoirs.

The Balay-1 discovery well has been on long-term production test since July 14, 2010, producing more than 285,000 bbl of 28° gravity oil from Upper Mirador with 0.22% BS&W. The forward plan is to put Balay-2 ST1 on long-term test with Balay-1. Balay-3 is to be drilled in the fourth quarter of 2011 to appraise Balay’s northern extent.

Petrobras operates Balay with 45% participating interest. CEPSA Colombia SA has 30%, and Sorgenia has 10%.

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