The survey, TBB11, will add over 1,820 sq km of new 3D data to the previous survey announced in December 2010.

This will increase coverage in this area to nearly 3,500 sq km and the data is being acquired by the M/V Seisquest, with the acquisition expected to complete in Q2 2011.

The TBB11 survey will be acquired over the southern part of the offshore Tarakan sub-basin, in an underexplored and poor data region.

The area forms part of the extensive Tertiary age play fairway covered by the earlier TBN10 multi-client 3D seismic survey to the north.

The TBB11 multi-client 3D survey is supported by industry funding and also supports the Indonesia government’s overall objective to attract exploration and raise production levels.

TGS-Nopec provides global geoscience data products and services to the oil and gas industry for the exploration and delineation of hydrocarbon reserves.