Injection of fluids in the subsurface is a frequent operation in hydrocarbon producing projects. Injection can have different objectives:

  • Increase pressure in the producing formation to boost hydrocarbon recovery
  • Dispose of waste water and cuttings from well drilling

In both cases, OCTIO's ReM Caprock provides:

  • Monitoring of caprock integrity and fault reactivation for a safe injection
  • Larger injection flows and capacity due to the increased safety
  • Mapping of plume migration
  • Monitoring of crack formation for prevention of water breaktrough into producing wells
In ReM Caprock projects, data is analyzed and real-time feedback is provided to the client by means of OCTIO's Guardian package.

The Oseberg field case

A 172-node ReM Caprock system is operating 24/7 in the Oseberg field since 2013.

This was the first offshore system word-wide with microseismic monitoring as main motivation.

The system is saving the operator 1.2 M$ per year, by enabling injection of waste water, and avoiding costly, weather-dependent shipping of waste to land.

A part from its main motivation of detecting microseismic events, OCTIO's ReM system at Oseberg has been used to:

  • Significantly improve the imaging of regions of the reservoir by using active seismic
  • Investigate gas leakages on the shallow sediments through interferometry
  • Investigate detectability of CO2 through changes in sound velocity in water

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