The first onshore exploration well, Lukut-1 in Block L, Brunei Darussalam commenced drilling in May 2010. The Lukut-1 well was part of the first phase of an exploration program on Brunei Block L and was the first well drilled onshore in Brunei for more than 20 years. The well was designed to test the hydrocarbon potential of a structural feature defined by 3D seismic shot by Serinus and its joint venture partners in 2009. The well encountered hydrocarbon shows in multiple horizons, but remains suspended pending agreement amongst the joint venture partners regarding testing the well.
The second onshore exploration well to be drilled in 2010 on Block L in Brunei Darussalam, commenced drilling in July. The well was designed to test the hydrocarbon potential of a structural feature defined by 3D seismic shot in 2009. The well encountered hydrocarbon shows in multiple horizons, but the testing program has been curtailed due to mechanical issues. Lempuyang-1 drilling and testing results have been integrated into the existing data base and used for future assessment of the updip area within the eastern part of Block L.
The well commenced drilling in June, 2013. The LKU-1 well which was the first exploration well drilled during the Brunei Block L Phase 2 drilling campaign is a directional well with a planned measured depth of 2,959 metres and a planned true vertical depth of 2,431 metres.
The well will test the potential of a triple junction structure that has formed where the Belait and Jerudong Anticlines meet with the Simbatang Fault. The primary targets, at a depth of approximately 2,000 metres TVD are deltaic and base slope sand deposits of Middle Miocene age with an anticipated aggregate thickness of up to 250 metres. Overpressure is expected and the Company will use managed pressure drilling techniques for the drilling of LKU-1. The Triple Junction represents the last stop for basinal hydrocarbon migration.
- In May 2009 the Company completed a 350 square kilometre 3D seismic acquisition program, shot to evaluate the potential of the southwest portion of the block near the Seria field and immediately north of the Belait anticline.
- In 2010, the joint venture partnership conducted an airborne gravity and aeromagnetic survey over Block L covering about 3,000 square kilometres.
- In June 2013 Serinus completed of field operations for the acquisition of 191.8 km2 of 3D seismic data, 16.2 km2 of 3D swath data and 14 kilometres of 2D seismic data on Block L.