Towed Streamer EM

Making discoveries is becoming harder and fewer large fields are being found. Adding resistivity information to seismic can highlight prospective areas that may have been overlooked. PGS’ unique Towed Streamer EM technology enables rapid acquisition of large volumes of high-density 3D EM data.

Using a single survey vessel, PGS can acquire high-density EM data simultaneously with 2D GeoStreamer® seismic, or high-density 3D EM data over existing, or planned, 3D seismic. The insight gained from the combined datasets has significant value and a range of applications.

  • cost-effective regional and near field exploration
  • reservoir level analysis of drilling hazards
  • hydrocarbon saturation and production optimization

Structural interpretation is supplied from the seismic data and resistivity values from the Towed Streamer EM system. Both technologies seek to mitigate risk, in the search for and extraction of oil and gas. High-density simultaneous acquisition and integrated data analysis and interpretation represent a step change in the application of EM technology.

Example of a seismically guided inversion from the Barents Sea, Towed Streamer EM and GeoStreamer data acquired simultaneously in 2013Example of a seismically guided inversion from the Barents Sea, Towed Streamer EM and GeoStreamer data acquired simultaneously in 2013