Basin modelling pore pressure
Safe drilling practices rely on pore pressure prediction methods to identify potential kick and flow intervals.
Existing prediction models are invalid in mature compacted basin such as the Cooper Basin. The aim of this project was to investigate the potential magnitude of secondary overpressure mechanisms in the Cooper Basin through basin modelling. By modifying the amount of heat flow through time, reference porosity, lithology and uplift of the basin model, it could be concluded that Aquathermal expansion is generating overpressure in the basin.
Maximum burial is having a greater impact than heat flow and overpressure is generated by burial not uplift. Hydrocarbon generation is also generating overpressure in the basin. However, further work required to define a quartz cementation model. In conclusion, basin modelling has potential to be a reliable overpressure prediction tool.
Future energy and resources
Australian School of Petroleum (Geoscience)