Gulf Indonesia Resources Ltd., Talisman (Corridor) Ltd., and Perusahaan Pertambangan Minyak Dan Gas Bumi Negara (Pertamina), the state oil and gas company of Indonesia, announced the results of the latest test of the Suban-4 delineation well in the Corridor Block production sharing contract (PSC) area in south Sumatra, Indonesia.
A commingled test of perforations into three sections (limestone, sandstone and pre-Tertiary granite) located between 2,234 and 2,635 meters flowed at a rate of 80 million cubic feet of natural gas per day with approximately 420 barrels of condensate per day at 2,000 pounds per square inch flowing tubing pressure through a 1 1/2-inch choke. This flow rate was restricted by the capability of the test equipment.
The gas in the latest test contained low levels of carbon dioxide similar to the 5.5 per cent encountered in the previous Suban wells, significant in that very little processing will be required to meet the sales gas specification of 5 per cent carbon dioxide.
The flow rate from the Suban-4 well broke the record for the highest flow rate of any well drilled by Gulf Indonesia in South Sumatra, surpassing the measured flow rate of the Durian Mabok-2 well, located 4 kilometers to the southeast of Suban-4.
A 155 meter thick basal Tertiary limestone section in the Durian Mabok-2 well flowed 58 million cubic feet of natural gas per day with approximately 370 barrels of condensate per day at 2,900 pounds per square inch flowing tubing pressure through a 1-inch choke. This flow rate was also restricted by the capability of the test equipment.