Reservoir pressure analysis identifies:
Reservoir Fluids, contacts & overpressure
Overpressure mapping: compartmentalisation
Seal Capacity analysis identifies:
Inputs for determination of Seal Capacity
Aquifer Seal Capacity and Hydrocarbon Seal Capacity.
Image taken from Swarbrick, R.E., Lahann, R.W., O’Connor, S.A. and Mallon, A.J. 2010. The role of the Chalk in development of deep overpressure in the Central North Sea. In: Vining, B.A. & Pickering, S.C. (eds.) Petroleum Geology: From Mature Basins to New Frontiers, Proceedings of 7th Petroleum Geology Conference, v.1. p.493-507.
Pressure Effects on seismic response – cross-discipline application of pressure:
PRESENCE OF HYDROCARBONS
AVO Classes (after Rutherford and Williams, 1989)
Lateral drainage is related to fluid escape to the surface via continuous reservoirs or fault linkage, resulting in pressure regressions with increasing depth.
Naturally draining reservoirs enhance seal capacity in traps thus allowing longer-than-expected hydrocarbon columns as well as providing migration pathways, possibly into new traps
O’Connor and Swarbrick, 2008.
ENHANCED COLUMN LENGTH MIGRATION