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The Natuna Sea Regional Reprocessing package is an alliance project between Australian Seismic Brokers (ASB), Seitel and MIGAS. It comprises 7000km of 2D fully reprocessed data covering the Northern Section of the Natuna Sea, running from the Kakap and Anoa fields in the west to the super giant |
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The Natuna Sea can be sub-divided into two major basins, the East Natuna Basin and West Natuna Basin separated by a north south striking basement high known as the Natuna Arch which is exposed above sea level at Natuna Island. The West Natuna Basin has been regarded as mature from an exploration standpoint although discoveries such as Pelikan, Sembilan and Siplit, made in the last few years, have revived interest in the area. The majority of discoveries in the West Natuna Basin have been achieved in closures associated with inverted anticlinal structures formed above a series of grabens and half grabens that are in evidence throughout the basin. These are believed to house hydrocarbons sourced from the deeply buried syn-rift sequence of the Benua Formation shales which comprise part of the basal Benua / Lama (or Belut). The hydrocarbons are believed to have migrated into shallower traps in the Gabus and Arang via a series of re-activated wrench faults which are on trend with the Malay Basin fault system. There has been relatively little targeting of any structures within the deeper sections of the grabens although this is a proven producing target in the Kakap PSC where significant reserves have been derived from the syn-rift Lama Formation sands which overlay the basement complex. Initial interpretation of the data-set shows a number of as-yet untested features both within the syn-rift sequence and in the shallower Upper Gabus section. The East Natuna Basin, located to the north and east of the Natuna Arch is, in comparison, relatively under-explored with the one significant discovery being the |
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Australian Seismic Brokers Perth Tel: +61 8 9479 5900 Email: asb@asb.com.au |
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