Colombia's Lower Mag yields more Cienaga de Oro gas

Petrolifera Petroleum Ltd., Calgary, gauged a dry gas discovery in the Tertiary Cienaga de Oro formation on the Sierra Nevada license in Colombia’s Lower Magdalena basin.

By OGJ editors
HOUSTON, Apr. 20
-- Petrolifera Petroleum Ltd., Calgary, gauged a dry gas discovery in the Tertiary Cienaga de Oro formation on the Sierra Nevada license in Colombia’s Lower Magdalena basin.

The Brillante SE-1X well flowed at a measured 8.4 MMcfd on a 48/64-in. choke on a drillstem test at 3,138-3,350 ft with 579 psi surface pressure. The net pay interval is 105.5 ft. Estimated calculated absolute open flow potential is 12.5 MMcfd.

Third party log evaluation of the interval from 3,138 ft to the well’s total depth of 9,500 ft indicate the presence of 429.5 ft of possible net gas pay. No resource or reserve calculation can be made until the company conducts a long-term test of the perforated interval.

The Sierra Nevada license, northeast of Petrolifera’s La Creciente gas field and contiguous with the company’s Magdalena license, is prospective for 40-45° gravity crude oil and liquids-rich natural gas, Petrolifera said. It provides targets in the Cienaga de Oro and shallower Miocene Middle and Upper Porquero and Tubara formations.

Petrolifera will suspend the discovery until it receives a permit to run a long-term test and will evaluate deeper pay intervals in appraisal wells. The company noted that it has the right to appraise its oil and gas finds in Colombia but not to produce them until the reserves are deemed commercial.

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