Pacific Rubiales Maintains Success Streak Onshore Colombia

Llanos Basin, Colombia
(Click to Enlarge)

Pacific Rubiales has made another oil discovery at its Quifa-10 well on the Quifa Block, located in the Llanos Basin of Colombia. The company also provided an update on the operational activity in the block.

The Quifa-10 was drilled as an appraisal well of the discovery well Quifa-7 located at Prospect "H". The well found the top of the Carbonera basal sands at 2,889 feet measured depth (MD), or 2,229 feet true vertical depth at sub-sea level (TVDSS) and the oil water contact (OWC) at 2,933 feet MD, or 2,273 feet TVDSS, for a total oil column of 44 feet. The petrophysical evaluation of the well indicates a net pay zone of 20 feet with 32% average porosity. The Quifa-10 well was drilled at a distance of 1.1 kilometers from the Quifa-7 well and at 2.0 kilometers of the Quifa-8 well in Prospect "E" (refer to the drill results of the Quifa-7 and Quifa-8 wells, in the company's press release dated September 8, and August 26, 2009, respectively). This well extends the discovery of Prospect "H" to the north and also extends the discovery of Prospect "E" to the south, resulting in a total hydrocarbon column of more than 100 feet for both prospects, with an average net pay of 24 feet. The results obtained with this well reinforce the company's belief that the area comprising prospects "D", "E", "H" and "I" are connected to the Rubiales field and we are just appraising this reservoir into the Quifa Block. The company is now planning to test the well and complete it as a vertical hole producer.

Operational update and new drilling campaign

An updated average production for the Quifa-5, Quifa-7, Quifa-8 and Quifa-9 wells is summarized in the table below. The production test on Quifa-I-9 is still pending and waiting for a mechanical condition to be solved at the well bore.

As a result of the exploration success in the Quifa Block, an additional drilling campaign comprising 6 appraisals and 3 exploratory wells will be executed during 2009. The three exploratory wells will be drilled on prospects "A", "B" and "C" and the six appraisal wells will be spudded on prospects "D", "E" and "H". The appraisal wells represent the initiation of the process to declare the commerciality for the south-southwest region of the Quifa Block.

The Quifa Block is an exploratory block in which Meta Petroleum (a wholly-owned subsidiary of Pacific Rubiales) holds a 60% working interest and Ecopetrol S.A. holds a 40% working interest.


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