Edinburgh-based Bowleven says the IM-5 well has validated sufficient gas reserves to meet the requirements of its proposed fertiliser plant venture with Ferrostaal. The company, which has struggled to find a workable development plan for its Etinde permit, submitted an exploitation authorisation application to the government in November, and announced a tie-up with UK oil services group Petrofac, which will invest up to $500m towards the first stage of the development.