A preliminary study of the porosity and permeability of limestones and sandstones in the Jameson Land area, central East Greenland

Abstract

The Upper Palaeozoic - Mesozoic sequence in the Jameson Land area (figs 1, 2) is well known from numerous studies carried out since GGU initiated mapping of the area in 1968 (e.g. Clemmensen, 1980a, b; Surlyk et al., 1973, 1984, 1986a; Surlyk, 1983, 1987; Heinberg & Birkelund, 1984). Based on these studies, Surlyk et al. (1986b) proposed that a number of Upper Permian - Cretaceous formations have a reservoir potential. Sandstone and limestone samples from these and a few additional formations (fig. 2) have been anaIysed for porosity and air-permeability. The analyses, all performed on surface samples or shallow cores, represent the first numerical approach to the evaluation of reservoir properties in the Jameson Land - Scoresby Land basin, and form a preliminary background for a more detailed reservoir study presently being undertaken by GGU. The analyses were carried out commercially by the Core Analysis Laboratory of the Geological Survey of Denmark (Haslund, 1985; Springer, 1986). Air-permeability, He-porosity and grain density were measured conventionally on uncleaned 1" x 1" plugs after humidity drying.