Shell says the earliest it will consider drilling in the frontier deep water Great South Basin will be the summer of 2014-15.
The Government, which is putting much store on the potential for increasing trade receipts from the oil and gas sector, said last week it expected 27 oil wells would be drilled around the coast during the next five years.
Shell and Houston-based Anadarko are raising their public profiles, both holding Southern permits for drilling, emphasising their environmental and workplace safety credentials to a public increasingly nervous about dangers associated with deep-water drilling.
In mid-October, tenders close for 23 onshore and offshore oil and gas prospects around the country, including further blocks within the Great South Basin and in Southland.
Shell has taken over from Austrian company OMV as operator of the permit in the Great South Basin, whose permit size has been halved to 16,715sq km, with government permitting agency New Zealand Petroleum and Minerals granting a five-year extension to the permit from July.