Empyrean reports completion of Mako South-1 well with stabilised flow rates
Thursday, July 6 2017 - 12:57 AM WIB
UK-based oil, gas firm Empyrean Energy Plc announced Wednesday that it has been advised by the operator of the Duyung PSC in the Natuna Basin Offshore Indonesia, Conrad Petroleum that the Mako South-1 well testing operations has been successfully completed and the rig is currently demobilising back to its home base in Labuan, Malaysia.
Conrad has reported that the well performance was exceptional, and the drilling operations were carried out on time, on budget and with zero safety incidents.
Testing of the previously discovered gas-bearing sand at the Mako South-1 well has established 23 feet of net pay in the shallow Intra Muda Formation, with excellent quality rock, far better than Conrad's original prognosis.
The well flowed high quality gas that is close to 100% methane, with no CO2, H2S, or other contaminants. No sand production was recorded during testing. A final stabilised flow rate of 10.9 million cubic feet of per day (mmcfd) of gas was reached during testing on fixed choke of 128/64. The flow rate was limited by the available down hole production testing equipment.
Down hole pressure gauges retrieved following the flow test confirmed no pressure depletion over the extended production test. Conrad reports that the test results suggest that the reservoir consists of laterally continuous, high permeability sands in the multi Darcy range. Further permeability analysis will take place over the coming months on the core taken prior to flow testing. Mako is a very large gas accumulation with a lateral extent of approximately 340km2 . With the addition of the Mako South-1 well, four wells have now penetrated the Intra Muda Formation, but Mako South-1 is the only well to have been production tested.
Conrad now plans to thoroughly analyse the latest information, and aggregate it with that from previous wells in order to progress a development plan.
Empyrean owns 10% of West Natuna Exploration Limited (WNEL), a holding company that owns 100% of the Duyung PSC. Conrad owns the remaining 90% of WNEL.