This document is a supporting document to deliverable MS6.1 UK Storage Appraisal Final Report.
This report primarily describes the development of coupled geomechanical reservoir simulation models undertaken as part of Work Package 4: Dynamical Modelling of the UK Storage Appraisal Project.The work was focused on the modelling of large open aquifers (LOAs) and carried out in two parts.The first part looked at representative structures (generic models) of low injectivity LOAs and the second part on the specific Exemplar 1 (Forties) aquifer. One of the objectives of the geomechanical modelling work was to see if there was any scope for changing the maximum injection pressures from those based on fracture pressure gradient to some other geomechanical criterion. A supplementary (non-geomechanical) study looked at the sensitivity of total CO2 injected to the magnitudeof the fracture pressure gradient assumed.The general conclusion from the work was that maximum injection pressures based on fracture pressure gradient were conservative and should generally be used for storage assessment in the project.
This report primarily describes the development of coupled geomechanical reservoir simulation models undertaken as part of Work Package 4: Dynamical Modelling of the UK Storage Appraisal Project.The work was focused on the modelling of large open aquifers (LOAs) and carried out in two parts.The first part looked at representative structures (generic models) of low injectivity LOAs and the second part on the specific Exemplar 1 (Forties) aquifer. One of the objectives of the geomechanical modelling work was to see if there was any scope for changing the maximum injection pressures from those based on fracture pressure gradient to some other geomechanical criterion. A supplementary (non-geomechanical) study looked at the sensitivity of total CO2 injected to the magnitudeof the fracture pressure gradient assumed.The general conclusion from the work was that maximum injection pressures based on fracture pressure gradient were conservative and should generally be used for storage assessment in the project.