AUSTRALIAN seismic research company Searcher Seismic has started reprocessing two prominent regional seismic datasets in the Philippines and Papua New Guinea.

The Lahara survey includes over 12,000 kilometres of 2D long-offset seismic data over the south eastern Papuan basin, which it said was one of the most comprehensive seismic exploration datasets in the Gulf of Papua.

Searcher sales manager Rachel Masters said the survey improved the understanding of the deep compressional fold belt and changed the prospectivity outlook of the basin by showing potential for new pre-Tertiary petroleum systems.

“However, the area is plagued with a complex overburden which pushed the limits of traditional pre-stack time migration (PSTM) imaging,” she said.

“By applying broadband deghosting and a modern pre-stack depth migration (PSDM) processing sequence, previous understanding of the basin is being fundamentally changed and there is fresh insight into old plays”.

The Pala-Sulu seismic survey was acquired in 2011 to provide industry with a regional framework for understanding the prospectivity around Palawan Island, in the Philippines.

The dataset is currently being reprocessed with broadband deghosting and pre-stack depth migration to further enhance the quality of the existing data.

The Pala-Sulu survey comes after the Mialara 2D new acquisition seismic survey, creating a comprehensive tied 10 kilometre grid over the PECR5 blocks.

Preliminary PSDM data for both surveys is available now, Searcher said.