Lahara Non-Exclusive 2D Seismic Survey
Transforming Geological Understanding with Advanced Seismic Data
Searcher, in collaboration with project partner TGS, has acquired over 12,500 km of 2D long-offset seismic data across the south eastern Papuan Basin. The survey significantly enhanced the understanding of the compressional fold belt trends continuing from the onshore into the offshore, but imaging was challenged by traditional PSTM imaging.
Subsequent PSDM Reprocessing of the survey allowed it to become a key tool in revolutionising the offshore understanding of structure and prospectivity, revealing preserved pre-Tertiary petroleum systems.
Project Parameters
Project Size
12,971 km
Project Partners
TGS
Acquisition Parameters
Acquisition Year: 2006
Vessel: S/V Polar Duke (Fugro)
Streamer: 2D Digital Solid Streamer
Streamer Length: 7200m
Number of Streamers: 1
Record Length: 8 sec
Sample Rate: 2ms
Deliverables
Processing: DownUnder GeoSolutions
Processing Flow: Broadband deghosting, Anisotropic Kirchhoff PSDM, 7 iterations of tomographic velocity model building
Final Full Angle Volume (AGC) (in time and depth),
Final Full Angle Volume (Raw) (in time and depth),
True Amplitude Angle Volumes (Near, Mid, Far, Ultra Far) (in time and depth),
Final PSDM CDP gathers with residual RMO,
Final migration interval velocity field,
Final anisotropic parameter fields,
Gravity and magnetic data