PGS has completed the second successful GeoStreamer X seismic survey in the Viking Graben.
PGS said the survey had been completed on time and covering all targets and fast track data would be ready in the fourth quarter with final PSDM results available in the second quarter of next year.
The Norwegian seismic company said its latest technology innovations for advanced offset and azimuth-rich data were applied in the project, which builds on the successful 2010 pilot project in the same area.
Wide-eyed outcome
“The Ramform Vanguard managed its dense streamer spread in combination with record-wide sources, acquiring a survey that will deliver a dataset of excellent quality, with high resolution, optimal near-offset distribution for shallow imaging, improved demultiple, and AVO.
“The Norwegian exploration industry needs improved data quality in this area, to address a number of challenges. PGS has addressed this with a novel and efficient multi-azimuth towed-streamer solution and bespoke imaging workflow,” Gunhild Myhr, VP New Ventures at PGS, said.
PGS said GeoStreamer X “solves known illumination challenges on the Viking Graben associated with sand injectites, such as injectites cemented with anomalously high velocities (so-called ‘v-brights’), and injectites with reservoir potential that definitely require better illumination.
On this year’s Viking Graben survey the ultra-near offsets were achieved with a record of 250m between outer sources, the widest ever towed from a single vessel, according to PGS.
“The dense streamer spread included several long streamer tails that will provide the needed offset for optimal FWI at depth. Early-out data will be ready in Q4 and final depth imaging data will be available Q2 2021.”
