Frontera Energy Corp., Toronto, has confirmed the presence of hydrocarbons on the wholly owned and operated Llanos 25 block onshore Colombia. The Acorazado-1 well is being cased for testing.
The exploration well reached a total depth of 15,470 ft into the target formation and recorded hydrocarbon shows in a Mirador Reservoir section with 356 ft gross thickness. Wireline logging combined with a limited pressure and sampling confirmed the presence of hydrocarbons in several potentially productive zones. Total hydrocarbon column and potential net pay is under evaluation.
The predrill cost estimate to drill the well was $35-50 million. Frontera will run and cement a liner in preparation for testing, bringing the well cost to date to $40 million, excluding future testing costs.
On the Z-1 block offshore Peru the Delfin Sur-1 exploration well—49% working interest, Frontera is the technical operator—completed drilling on Aug. 12. Drilled to a total measured depth of 7,228 ft in the Heath formation, the well evaluated the Zorritos formation where hydrocarbon shows were encountered but not in sufficient quantities to justify further evaluation. It is being plugged and abandoned and future activity on the block is under evaluation. Frontera's net capital cost of the well was $14 million.
