Cooper Energy Limited reported Monday further success from the testing of the Bunian-3 ST2 development well in Sukananti KSO in South Sumatra, Indonesia with the flow testing of the secondary target K1 sand.
The K1 sand flowed for 18 hours at a flow rate equivalent to 1,590 barrels per day through a 0.125 inxh choke, with a flowing tubing head pressure of 1,050 psi. The flow, which consisted of 41 degree API oil and gas with trace water, was choked back from an initial rate equivalent to 2,400 barrels of oil per day due to surface test facilities constraints.
This K1 sand test flow rate is additional to the previously reported (April 27) flow from the primary target TRM3 sands equivalent to 1,742 barrels of oil per day, which was also limited by surface facilities. Details of the flow test results of the TRM3 and K1 sands are provided in Table 1 on the following page.
Oil flows are being directed to a temporary production facility and produced oil is being trucked to a pumping station for delivery to market.
Analysis of the increase in reserves attributable to the TRM3 and K1 sands will be completed after the conclusion of the production tests.
Cooper Energy Managing Director David Maxwell said “Bunian-3 has delivered results well on the high side of our expectations with this oil pool discovery in the K1 reservoir and the excellent oil flows recorded from the TRM3 reservoir. We are now working to quantify the estimates for increased production and increased reserves from the Bunian field”.
Maxwell said the company is also evaluating the most cost effective methods for realising the potential identified at Bunian-3. “Flows from both zones were limited because of the constraints of the current surface infrastructure. There are also further opportunities identified in the TRM1 and TRM2 sands which can be assessed in subsequent drilling”.
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