Petrominerales Tests Oil from Second Zone in Corcel-1

Petrominerales, an 80.7% owned subsidiary of Petrobank Energy and Resources, announces that the second test interval in the Corcel-1 exploration well has tested at initial rates of 1,500 to 2,300 barrels per day of 28 degree API oil, with no water, from the lower Mirador interval. These rates were achieved with maximum drawdown of 17% from a sand interval with 58 feet of net pay, using a jet pump configuration that limits the ability to produce the zone at full capability.

We now plan to complete and test the upper Mirador interval commingled with the recently tested lower Mirador interval using the jet pump. Based on log analysis, this upper Mirador zone contains 42 feet of potential oil pay. The results from the entire Mirador section are expected over the next week.

As previously announced, the first zone completed in the Corcel-1 exploration well tested at initial rates of 970 to 1,200 barrels per day of 31 degree API oil, with no water, from the Guadalupe formation, which was the lowermost of our three planned test intervals. This Guadalupe interval comprises 40 feet of net pay and was also tested using a jet pump configuration, limiting the ability to produce at full capability. The productivity index calculated from the initial test indicates that with the installation of a properly sized electric submersible pump, the Guadalupe could produce at initial rates of up to 2,500 barrels per day.

We have also started construction of a second drilling pad and expect to spud our second Corcel well in August 2007. The drilling rig will remain in the Llanos Basin to accelerate this ongoing exploration and delineation program.

The Corcel Block is situated in a drier region of the Llanos Basin and we have an all-weather road to this location which will accommodate year round production from the well. The ultimate size of the discovery will be defined through long-term testing and additional delineation drilling. Petrominerales has identified five additional Corcel prospects from our 47 square kilometer 3D seismic survey, which covers approximately 15% of the 79,815-acre Block. In addition, an early 2008 3D seismic program is planned for our 26,341-acre Guatiquia Block, which adjoins the Corcel Block to the south.

Corcel-1 was the fourth well of our five well 2007 exploration drilling program in the Llanos and Putumayo Basins; four wells have now been drilled in the Llanos and one well remains to be drilled in the Putumayo. Our drilling rig, currently working in the Orito Block in the Putumayo Basin, will be used to drill our Conga-1 exploration well on the Las Aguilas Block offsetting Orito. This well is expected to spud in September. Earlier in 2007, we drilled the Ojo de Tigre-2 discovery on the Joropo Block. Our other two Llanos Basin exploration wells were abandoned.

Petrominerales holds over 1.5 million acres of land in Colombia, on which we have acquired 357 square kilometers of 3D seismic and reprocessed all available 2D seismic data. This work program has generated 18 additional leads and prospects on these lands. We plan to acquire an additional 140 square kilometers of 3D seismic and 576 kilometers of reconnaissance 2D seismic. In 2008, we plan to drill up to eight further exploration wells focused primarily in the Llanos Basin.


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