IOR experience and strategies related to some Norwegian fields

摘要

The conference paper discusses the strategies of enhanced oil recovery on the Norwegian continental shelf together with the obtained experience so far. Topics cover: Technical achievements and pilot tests: lessons learned; going for capillary-trapped oil: surfactant pilot in Gullfaks; combined water/gas injection flood; non-swept oil: water shutoff with silica-gel; risk-reward analysis: comparison with prospect evaluation and risk-evaluation in the Statfjord field; the impact of reservoir description in IOR; management issues; and the role of the governmental authorities. 17 figs.