Abstract

The current paper is a comprehensive case study for Full-azimuth (FAZ) Ocean Bottom Node (OBN) seismic data acquisition in Mumbai High, the prominent oil field of India. The affordable survey geometries were optimized during the planning stage by comparing fold, trace density & distribution, and illumination maps (ray-trace modelling) to analyze the quality difference whereas resource requirement and source-node operation time were estimated for cost efficiency. The paper also contains modelling results to find the optimum configuration for a full azimuth/isotropic source and the best combination of source & node vessel counts for saving the field time. Here it was also discussed the advance planning for multiple SIMOPS to minimize the loss of operation time and infills for enhancing the fold coverage around the obstacles. An example of advance infill planning to fill the probable data loss for an anchored barge was described here by using proper SIMOPS input