Colombia: Llanos updip sidetrack being drilled

July 5, 2011
Parex Resources Colombia Ltd. Sucursal will take a farm-out from Petroamerica Oil Corp., Calgary, to earn a 25% working interest in the Los Ocarros block in Colombia’s Llanos basin, where the Las Maracas-2 exploratory well is being sidetracked.

By OGJ editors
HOUSTON, July 5
– Parex Resources Colombia Ltd. Sucursal will take a farm-out from Petroamerica Oil Corp., Calgary, to earn a 25% working interest in the Los Ocarros block in Colombia’s Llanos basin, where the Las Maracas-2 exploratory well is being sidetracked.

Petroamerica holds 50% working interest in the block under a farmout from Talisman (Colombia) Oil & Gas Ltd. Both farmouts are subject to approvals. Petroamerica and Parex have agreed to fund the sidetrack as an exclusive operation. Parex will pay the first $7 million, after which Parex and Petroamerica will split costs 50-50.

Las Maracas-2 went to a TD of 13,100 ft and was found to be on the edge of structural closure with minor hydrocarbon shows encountered in the Mirador and Gacheta reservoirs. Petroamerica interprets a transition zone from oil to water on wireline logs in the uppermost part of the Mirador reservoir.

The deeper part of the well has been plugged back, and the well is being sidetracked to test the closure in a structurally higher position, at an estimated true vertical depth of around 11,000 ft for the Mirador reservoir.