Cooper spuds Bunian-4 well

By Romel S. Gurky

ASX-listed Cooper Energy Limited said that Bunian-4 appraisal/development oil well in the Tangai-Sukananti Block, South Sumatra, was spudded on Saturday.

"A 20? surface casing had been run and cemented at 51 meters and preparations were being made to drill ahead in 17 ?? hole," the firm said in a statement Monday.

It said that Bunian-4 is an onshore directional well with a prognosed total depth of 1,712 meters and is forecast to take approximately 26 days to complete, inclusive of productiontesting. The Bunian structure is a four-way, fault bounded anticline defined bythe 2011 Sukananti 3D seismic survey.

Cooper said the primary target is the Talang Akar Formation TRM-3 Sand,which is expected to be intersected 450 meters east-southeast of the samereservoir in Bunian-3. The target is 380 meters south-south east of the surfacelocation and the well will be deviated at 25 degrees to reach its intended objective.The well is expected to add an oil production take point and pressure dataobtained will assist in further appraising the size of the oil accumulation.

The TRM-3 Sand is currently producing at approximately 650bopd from Bunian-1 and Bunian-3 and has cumulatively produced just over 1million barrels of oil from the Bunian-1 well, Cooper explaiened. The flow rates are limited bytransport capacity constraints; on test in Bunian-3 the zone produced at astabilized 1,742 bopd.

The secondary objectives of the well are to appraise the extent of the oil pool discovered in the K1 Sand in Bunian-3 ST2 which flowed at 1,590 bopd on test and to assess the TRM-1 and TRM-2 Sands which it was not possible to evaluate in the earlier well, it further said.

Joint venture participants in the Tangai-Sukananti KSO are: CooperEnergy Sukananti Ltd (55% and Operator) and Mega Adhyaksa Pratama Sukananti Ltd (45%).

Editing by Reiner Simanjuntak