These papers from two recent European Federation of Corrosion conferences, EURCORR '97 and EURCORR '98, deal with advances in the understanding of corrosion and performance of equipment in upstream oil and gas operations. The opening section includes two keynote papers on: the materials and corrosion view of wet gas transportation; and the modelling of low induced localised corrosion from critical hydrodynamic data and fracture mechanics data of CO2 corrosion scales. The further 45 papers cover carbon and low alloy steels, martensitic stainless steels, corrosion resistant alloys, galvanic corrosion, corrosion inhibitors and other materials.