Cooper Energy Updates on Drilling at Bunian-4 Well in South Sumatra

Cooper Energy Limited reported Friday that drilling operations continue at the Bunian-4 oil appraisal/development well in the KSO Tangai-Sukananti Block, South Sumatra, Indonesia. At 06:00 Indonesian local time today the well was at 4,340 feet (1,323 meters) preparing to acquire wireline logging data prior to installing and cementing the 9.625 inch intermediate casing. Once this is complete, the well will drill out in 8.5 inch hole to penetrate the target reservoir section. Further updates will be issued as significant milestones are reached.

Bunian-4 is an onshore directional well with a prognosed total depth of 5,617 feet (1,712 meters). The Bunian structure is a four-way, fault bounded anticline defined by the 2011 Sukananti 3D seismic survey.

The primary target is the Talang Akar Formation TRM-3 Sand, which is expected to be intersected 1,467 feet (450 meters) east-southeast of the same reservoir in Bunian-3. The target is 1,247 feet (380 meters) south-south east of the surface location and the well has been deviated at 25 degrees to reach its intended objective. On test in Bunian-3 the zone produced at a stabilised 1,742 barrels of oil per day (bopd).

The secondary objectives of the well are to appraise the K1 Sand which flowed at 1,598 bopd on test in Bunian-3 and to assess the TRM-1 and TRM-2 Sands which it was not possible to evaluate in the earlier well.

Overall oil production from the license was 785 bopd (100 percent JV share) during July, limited by surface facilities and transport constraints. Various debottlenecking projects are in progress to facilitate an increase of up to 50 percent in production capacity by year end together with initial planning for an 11 mile (18 kilometer) export pipeline which will have the potential to double that capacity again to somewhere in the range of 2,000 – 3,000 bopd.

Joint Venture participants in the KSO Tangai-Sukananti Block are Cooper Energy Sukananti Ltd (Operator 55 percent) and Mega Adhyaksa Pratama Sukananti Ltd (45 percent).


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