Science4Steer: a scientific basis for production and reinjection strategies to minimize induced seismicity in Dutch gas fields

We propose a joint numerical-experimental research project to understand the effects of time-varying gas production and (re-)injection operations in Dutch gas fields in the Rotliegend formation. This concerns in particular the Groningen field which has experienced increasing production-induced seismicity over the past decade causing serious damage and societal unrest. We will perform physical experiments to quantify rock and fault properties and microseismicity evolution under reversed and cycled stress conditions. In parallel we will develop advanced numerical simulation tools and perform computational experiments to gain in-depth understanding of the coupled flow and dynamic geomechanical response of gas reservoirs under time-varying operational conditions at a variety of spatial and temporal scales. The necessary constitutive relationships for compaction and fault friction under reversed or fluctuating loading will be developed in close cooperation between experimentalists and numerical modellers. With the aid of the developed computational tools and using system-theoretical concepts we will develop methods for model-based optimal control of coupled subsurface flow and mechanics under geological and parameter uncertainty. The overall aim of our project is to develop a body of new scientific knowledge that will support the construction (by industry or national research agencies) of model-based, data-informed operational systems aimed at forecasting and managing induced seismicity.