Parex-CESC developing Llanos basin Kona field

By OGJ editors
HOUSTON, Apr. 18
-- The Colombian subsidiary of Parex Resources Inc., Calgary, and Columbus Energy Sucursal Colombia are developing the 2010 Kona field discovery and are further exploring the LLA-16 block in Colombia’s Llanos basin.

The Kona-1 discoveery well has produced a gross 264,000 bbl of light oil from December 2010 to Mar. 31, 2011. Output averaged 2,520 b/d in March with 5% water cut on natural flow.

Parex expects to complete construction in May of a 25,000 b/d oil treatment plant on the Kona-1 lease. It will pipe clean oil 7 km to the loading facility. After commissioning the plant and drilling a water disposal well, it will temporarily shut-in Kona-1 and install an electric submersible pump to maintain production at an expected 2,000 b/d.

Plant commissioning is expected to allow production start-up of other shut-in Kona wells that exhibit poor cement isolation from water-bearing zones thereby prohibiting dry oil production.

South of Kona field on the block along a separate fault trend, the Supremo-1 well is expected to go on production in early May following the completion of a water disposal well and associated handling facilities. Supremo had tested 2,500 b/d of fluid from Mirador with a 31° gravity oil at 500 b/d.

Based on test results or log analysis of Kona-1, Kona-2, Kona-3, Kona-4, and Supremo-1 and upon the commissioning of the Kona oil treatment plant and the water disposal wells, Parex expects gross production of 4,000-6,000 b/d of oil.

Kona-2 is being redrilled to test the Gacheta or may be completed in Mirador that previously flowed as much as 1,600 b/d of 35° gravity oil, natural. Kona-3 was suspended with a poor cement job in Mirador and tested 750 b/d of fluid, 42% light oil, from the C7 formation, where poor cement isolation is also suspected.

Kona-4 logged potential net oil pay of 20 ft and 30 ft in C7 and Mirador, respectively, while Gacheta was wet. A Mirador completion is planned. Parex has spud Kona-6 to appraise the C7 formation. Log analysis indicated 35 ft and 50 ft of potential net oil pay in C7 in Kona-1 and Kona-2, respectively.

Parex is evaluating the potential to drill an exploratory sidetrack updip from Kopi-1, which tested wet in Mirador and low swab rates of 31° gravity oil in C7.

Exploratory drilling prospects on LLA-16 are Sulawesi-1 and Java-1, both 3D defined multipay targets at 11,000 ft and 12,000 ft, respectively. Parex also plans to drill Supremo-2 updip of Supremo-1, in mid-2011.

The 2011 drilling strategy is to employ two to three drilling rigs and a service rig to allow for continuous operation on the Kona discovery and on other block LLA-16 and LLA-20 drilling prospects.

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