Enhanced Oil Recovery as a Second Revenue Stream in a Gas Storage Facility; Understanding and Monitoring the Humbly Grove Field, Hampshire, U.K.

The Humbly Grove field is a unique example of an onshore UK field with two co-existing revenue streams; seasonal gas storage and enhanced oil recovery. As with other gas storage facilities, Humbly Grove operates under strict safety legislation. The license to operate is dependent on a robust safety case. This was developed with an integrated approach to reservoir monitoring and modeling which combines a range of geoscience expertise to understand the behavior and safe limits for gas storage. CGG's involvement since 2012 has included reservoir modelling and flow simulation as the Operator's subsurface team. Safety monitoring, contracted to Durham University, involved ground and satellite based sensing and geomechanics.