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Gazprom Neft improves efficiency in oil-rim-deposit development at the Chayandinskoye field
Courtesy of gazprom-neft.com |
Gazpromneft-Zapolyarye has commissioned its first “fishbone” well at an oil-rim deposit at the Chayandinskoye field in Yakutia. The initial flow rate from this multi-branched well has exceeded that of previously used horizontal structures, at about 400 tonnes per day.
The Chayandinskoye field is marked by a complex geological structure and exceptionally low formation pressure. A 3D hydrodynamic model of the COGCF’s oil-rim deposit was used in creating the development programme for this asset. Specialists at Gazprom Neft’s Science and Technology Centre and Gazpromneft-Zapolyarye made approximately 500 multivariate calculations in comparing the advantages of various well types for producing Chayandinskoye oil before finally coming down in favour of a “fishbone” well.
A total 44 high-tech fishbone wells are to be drilled at the COGCF oil-rim deposit by end-2024, with five such multi-hole wells being commissioned this year. The company is currently operating seven oil-producing wells at the COGCF, and drilling several more.
Full-scale development of the COGCF oil-rim deposit will start in 2020. The CPF (which has a planned capacity of one million tonnes per year) is expected to be expanded and modernised by 2022. Gazpromneft-Zapolyarye is now building a
Source: gazprom-neft.com