STOCKHOLM, Sweden – Lundin Petroleum has completed drilling and testing of the Tembakau-2 appraisal well in block PM307 offshore Malaysia.
The Seadrill jackup West Prospero drilled the well to a depth of 1,450 m (4,757 ft) in 68 m (223 ft) of water. The target was stacked gas reservoirs in Miocene-age sands, 3.7 km (2.3 mi) south of the discovery well.
Tembakau-2 penetrated 22 m (72 ft) of gross gas sands in four sand intervals between 900 and 1,300 m (2,953 and 4,265 ft) subsea. During tests the “I20” sand produced 15.8 MMcf/d (447,406 cm/d) of gas over an eight-hour period on a 64/64-in. choke, while the “I10” sand flowed 15.9 MMcf/d (450,238 cm/d) over a similar period on a 72/64-in. choke.
Lundin says the gas was dry with a carbon dioxide content of around 0.5%. Samples and other data will be analyzed and integrated with 3D seismic to update the resource estimate (306 bcf/8.7 bcm pre-drilling), and to provide reservoir information for conceptual development studies.
West Prospero has since moved to the Bertam oil field wellhead platform in the same block offshore peninsular Malaysia to start development drilling. Fourteen horizontal wells will be drilled and completed with electrical submersible pumps.
The steel jacket for the wellhead platform was recently installed offshore and is expected to be followed during 4Q by the topsides, nearing completion at the TH Heavy Engineering yard in Pulau Indah, which is near Kuala Lumpur.
Upgrades and life extensions works on the Bertam FPSO (ex-Ikdam) continue at the Keppel shipyard in Singapore and should be completed later this year.
Lundin estimates reserves at the Bertam field at 18 MMboe, and puts the total development cost at $400 million, excluding any FPSO-related costs. First oil is expected to flow in 2Q 2015, peaking at 15 MMb/d.
Later this year, the company plans two more exploration wells on block PM307. One will be on the 22-MMboe Rengas prospect and the other on the 21-MMboe Mengkuang-1 prospect.West Prospero will drill both during the window for installing the Bertam topsides.
Offshore Sabah in eastern Malaysia, the company continues to evaluate commercialization of the Berangan, Tarap, Cempulut, and Titik Terang gas discoveries in block SB303, probably via a cluster development. Combined resources could be 347 bcf (9.8 bcm).
Last year, the company completed processing of the 500-sq-km (193-sq-mi) Emerald 3D survey on blocks SB307/308, with two prospects, Maligan and Kitabu, identified for drilling. Kitabu, which could hold 71 MMboe, is on trend with the Shell-operated producing fields SF30 and South Furious. It will likely be drilled during 4Q.
Elsewhere in the region, Lundin is engaged in geological and technical studies on the Cendrawasih VII block offshore eastern Indonesia.