The space-time continuum of generation, migration, fractionation, accumulation and alteration involves many complex, dynamic and multivariable processes which occur during the long basin history and are part of "integrated basin analysis". These processes are induced and steadily driven by progressive changes in physical conditions (pVTX) that occur during basin evolution. Sediments deposited at the surface under ambient conditions, saturated with connate water, and with diverse compositions are in pronounced disequilibrium with the conditions imposed during basin subsidence and progressive burial.
Consequently, in attempting to re-establish equilibrium, they respond in a variety of ways to the differing and changing conditions. Thus, the formation of a petroleum deposit results from the direct response of the basin fill to many geological events and processes and hence is intimately linked to sedimentary basin evolution (Poelchau et al., 1997).
Poelchau, H.S., Baker, D.R., Hantschel, T., Horsfield, B. & Wygrala, B. (1997): Basin Simulation and the Design of the Conceptual Basin Model. In: Welte, D., Horsfield, B., Baker, D. (eds.): Petroleum and Basin Evolution. Springer Berlin Heidelberg, 3-70. Link