Two important characteristics of an underground storage reservoir are its capacity to hold natural gas and the rate at which gas inventory can be withdrawn, the deliverability rate. But a new important reservoir characteristic is imposed on the industry: geomechanical integrity of the storage facility.
In most populated areas, the local population and the regulator are exercising a new and increasing level of oversight on UGS facilities. The cost of downhole monitoring is high and the resulting data typically only tell a partial story.
An ongoing InSAR service is more than a replacement of conventional leveling. By understanding radar measurements over the entire site, in a time series going back for many years, the displacement and heave are a breathing pattern of your underground operations. With InSAR you can see what the normal pattern looks like and create an early warning system for when abnormal patterns occur.
Environmental risk management is an important topic in the Solution Mining and Underground Gas Storage Industries. There have been cases of leaks, both sub-surface and above surface) and induced seismicity. Will it ever be possible to fully prevent a failure by using remote data? We are starting to understand the predictive power of these millions of remote sensing measurements, but they require a specialist to combine data and convert that into a correct and easy-to-understand statement about the sub-surface and about safety.