Initial production at the field in thesouth-east of the country is now expected next year, the oil arm of Russiangas monopoly Gazprom said in a prospectus on Tuesday.

The delay was due in part to some contractorsfailing to perform duties, while Gazprom Neft is also concerned about thesecurity of workers and infrastructure.

Services behemoth Schlumberger and BakerHughes have both seen operations disrupted in the past fortnight over violent