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Gazprom Neft becomes the first company in Russia to successfully test a new well-construction technology for Achimovsky strata
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| Courtesy of gazprom-neft.com |
A double-bored multilateral well for developing Achimovsky strata — involving a construction unique to Russia — has been commissioned by Gazpromneft-Noyabrskneftegaz at its Vyngayakhinskoye field. In line with international classifications, the well is deemed to have a “TAML-3” level of complexity. The well’s construction means oil inflows can be double those achieved in single-barrel wells. Specialists based around the Bolshaya Achimovka project office, including from Gazpromneft-GEO and the Gazprom Neft Science and Technology Centre, were all involved in developing and deploying this technology.
The technology used in fracking the hyper-dense rock of the Achimovsky strata means operations can take place simultaneously in both horizontal boreholes — the lengths of which, at this well, run to more than one kilometre. On commissioning the well (following an eight-stage fracking operation in both boreholes) production reached more than 400 cubic metres of oil-bearing fluid per day. The construction of this well involved drilling a single vertical section, with one single pumping unit then used to allow both horizontal sections to go into operation — significantly reducing capital outlay and production costs.
Source: gazprom-neft.com
