Conventional Versus Dual-sensor Streamer Data De-ghosting - A Case Study from the Haltenbanken Dual-streamer Acquisition

摘要

In this work we have compared the final image quality for data acquired using a conventional hydrophone-only streamer towed at 8m depth to contemporaneously acquired dual-senor streamer data at 15m depth. Identical processing flows were applied to data acquired by each of the two streamers. Under varied weather conditions, the dual-sensor streamer gives clearly superior image quality, primarily because it is subjected to reduced levels of weather-related noise due to greater towing depth. Towing a conventional hydrophone cable at a similar depth is not a viable proposition without severely compromising the usable seismic bandwidth and consequently resolution.