Cooper Energy announces successful Tangai-1 well workover

By Ruli Setiawan

ASX-listed Cooper Energy reported on Thursday that the workover of Tangai-1 in the Sukananti KSO, South Sumatra Basin, where it has a 55 percent participating interest, has been successful in re-establishing oil production from the well which had been shut in since 1996.

Flow testing to establish the oil production rate and its commercial significance is currently underway, it said in a statement.

Initial production after the workover was 541 barrels of oil and 89 barrels of water flow to the surface in several intermittent flow periods over a total period of 13 hours.

The Sukananti KSO is currently producing approximately 200 barrels per day from a single well, Bunian-1.

Tangai-1 was drilled by Pertamina in 1992 and had produced a total of 0.23 million barrels of oil until it was shut-in in 1996, because water cut had reached a level where production on natural flow was no longer economically viable.

The workover program undertaken by Cooper Energy involved re-perforation of the oil zone to be followed by installation of artificial lift, as had been previously successfully conducted at Bunian-1.

Cooper Energy acquired the KSO in 2010 and since then has carried out 2 successful workover operations and acquired a 3D seismic survey. The seismic has identified several attractive appraisal and development drilling locations, which are under consideration for drilling early in 2014.

Editing by Dadan Wijaksana