Geochemical data for eight wells in the Taranaki Basin, New Zealand.

This report contains geochemical results from 8 wells; Kaimiro-1, Urenui-1, Mangahewa-1, Toko-1, Stratford-1 (all onshore), Tane-1, Cook-1, and North Tasman-1 (offshore). Samples were selected in order to achieve good regional control of source character and maturity of the two major coal Formations in the basin: the Kapuni (Eocene) and the Pakawau (Cretaceous). In general, all samples analysed have reached early/mid maturity for oil generation. For the coals and mudstones from the Pakawau Formation, yields are greatest in Tane-1 with those in Cook-1 and North Tasman-1 being considerably lower. The coals are most oil prone in Tane-1 with Cook-1 showing more gas-prone behaviour. All Kapuni coals and mudstones analysed appear gas prone with little chance to expel liquids.