Research and scholarship
Research and scholarship
Project title: The controls upon aeolian cyclicity: implications for reservoir-scale heterogeneity
Supervision: Dr Stu Clarke, Dr Andy Mitten, Dr David Cousins, Dr Travis Swanson, Prof. John Howell
Funding: GeoNetZero Centre for Doctoral Training (CDT): Geoscience and its Role in the Low Carbon Energy Transition
Aeolian strata are some of the best hosts of geofluids in the subsurface, and they have excellent potential as prospective targets for CO2 storage, but maximising their capacity in this regard requires detailed characterisation and regional correlation. It has long been recognised that sedimentary ‘cycles’ exist in aeolian strata, and correlations based upon such cycles provide a means of predicting reservoir character away from the well bore. Both sedimentary and geophysical data suggest the cyclicity may be allogenically controlled, but the precise nature of the controls upon deposition and preservation of the cycles remain under investigated and very poorly constrained. We recognise the cycles, but we do not fully understand why they occur, despite their consequent
value for correlating and for predicting spatial distributions of sediments within aeolian strata.
This work will use a strong combination of sedimentary and geophysical outcrop studies combined with forward numerical stratigraphical modelling to investigate the controls upon the cyclicity that is developed and, crucially, preserved in aeolian strata. The outcrop studies will focus upon the sediments of well characterised aeolian systems that developed under the influence of distinctly different allo-controls and consequently preserve cycles influenced by those controls. Numerical modelling techniques will be used to forward model to solutions that match the preserved cycles. The work will produce a set of models that define how allo-controls influence cyclicity, and geometry of aeolian systems. The models will be applied to regional scale potential UKCS CCS
targets.