3D Marine Seismic Survey in Operationally Marginal Shallow Water off the Coast of Sarawak, Malaysia

High quality 3D seismic acquisition and processing increases the chance of success for hydrocarbon discoveries in mature basins. SKEO successfully acquired 3D marine seismic survey in operationally very challenging marginal shallow water in offshore Sarawak. Three critical factors are carefully considered for a successful 3D seismic survey in this extremely shallow water: safe and efficient operation, environment, and quality of the data. As bathymetry information is one of the most critical keys to safe operation in shallow water, the bathymetry data was updated via SED (Survey Evaluation and Design) and a multi-beam survey. SED was conducted to choose optimal survey method and corresponding parameters. Triple sources with smaller gun volume and wider streamer separation configuration were utilized for efficient and eco-friendly survey. To ensure higher quality seismic image in processing, Near Field Hydrophone data which can capture water bottom reflections were properly recorded. 8km length streamers were also towed to provide accurate velocity model building using FWI. Via this cost effective and environmentally friendly 3D Seismic Acquisition program, it is expected to unlock new hydrocarbon play potential in the under-explored area, near the shores of Sarawak.