Pioneering Seismic Source Ideas
Commercial, operational and technical ideas flourish at PGS. Alternative sources have been the focus of our attention for some time: multi-level, distributed, continuous and vibrating.
Marine seismic data contains two unwanted sea-surface reflections, a receiver ghost, and a separate source ghost. The GeoSource® time and depth distributed source uses sub-sources at varied depths and fired with specific time delays. The ghost functions of the sub-sources are complementary and when combined restore the full signal bandwidth. Read more
As the name suggests, air guns in a multi-level solution are arranged at two or three different depths. They are then fired in rapid succession in a manner that reinforces the down-going source wavefield and decouples the source ghost wavefield. Read more
Developed in the early 1990s, the remotely operated marine vibrator has been described as the next big thing in seismic for over two decades. Twenty years on, it is still showing promise and still on the test bench. Marine vibrators offer a range of exciting potential benefits, from low-frequency signals to multiple, flexible source arrays and potentially reduced environmental footprint. Read more
This acquisition and processing method uses seismic data that has been recorded continuously using either traditional airguns or marine vibrator sources. The eSeismic methodology treats the wavefields on both the source and the receiver side as continuous wavefields. Read more