Paper submitted to 5th EAGE Marine Acquisition Workshop, by P.E. Dhelie, C. Roalkvam, M. Halvorsen (Aker BP), T. Kluever, A. McKay and V. Hlebnikov (TGS).
Abstract
Traditionally, site investigations have relied on high-density 2D grids of seismic lines or low-efficiency 3D highresolution (3DHR) or ultra-high-resolution (3DUHR) volumes (typically 2 sources and 4 streamers). However, multiple potential well locations, and the need for rapid de risking of jack up foundations motivated a different approach for the prospects in the southern North Sea.
A fully integrated high-efficiency 3DHR/3DUHR seismic survey, acquired concurrently with multi-beam echo sounder (MBES), side scan sonar (SSS), sub-bottom profiler (SBP), and magnetometer (MAG) data, was selected and acquired in March 2026. The novel 3DHR/3DUHR concept was chosen to provide consistent spatial coverage, improved subsurface imaging continuity, and increased flexibility for well placements within the surveyed area.