Rotliegend and main Buntsandstein gas fields in Block K/13 - A case history

Abstract

In the Dutch offshore Block K/13, two Lower Permian Rotliegend and two Triassic Main Buntsandstein gas fields were discovered between 1972 and 1976. The coincidence of these gas accumulations is the result of a combination of several factors: - excellent reservoir sands sourced by Carboniferous gas, - gas trapped in salt-sealed Rotliegend structures flanking the Broad Fourteens Basin prior to inversion. Some gas re-migrated into Main Buntsandstein traps during and after Late Cretaceous inversion movements.