A Diverse Approach to CO₂ Monitoring Solutions

Bringing Cutting-Edge Seismic Acquisition to CCS

TGS is actively testing a variety of cost-effective seismic acquisition and node-based technologies to enhance subsurface imaging efficiencies compared to current conventional streamer-based 4D seismic acquisition.

Our XHR (Extended High-Resolution) imaging technology can provide 4D imaging for Carbon Storage sites for initial site identification and ongoing 4D monitoring.

Our ocean bottom node (OBN)-based solutions can also be used to provide innovative and cost-effective solutions to monitor carbon storage reservoirs.

DAS / VSP: Leveraging Fiber Optic Technology

TGS provides a cost-effective 4D CO₂ “in well” fiber optic monitoring solution with Distributed Acoustic Sensing (DAS) and active sources to produce Vertical Seismic Profiles (VSP). This technology leverages existing fiber technologies and a step change in imaging technology, creating an image over much broader areas than conventional DAS (VSP) data for active source applications.

As a passive sensor, the fiber captures additional data, including temperature and pressure, resulting in a real-time monitoring solution. In some cases, feasibility modeling has revealed that a DAS (VSP) dataset can cover the 4D needs for the injected CO₂ plume for two decades or more, reducing the cost of the overall monitoring program.

Image: Time-lapse example of P-Cable data acquired in the Snøhvit field showing an inline of the baseline (A), monitor (B), the difference between monitoring and baseline survey data (C), and the comparable NRMS section using 5 meters running interval (D). (Waage et al (2018), Planke S. et al, in press).