ZARUBEZHNEFT-Dobycha Kharyaga LLC has been successfully developing technologies for multilateral construction of directional and horizontal production wells since 2020 in terms of completion complexity according to Technology Advancement for Multi-Laterals classification (TAML) starting from TAML-1 to TAML-3, including well designs such as Fishbone and Dovetail. The article discusses issues related to drilling of multilateral and multi-borehole directional and horizontal wells at the Kharyaginskoye field of the Timan-Pechora oil and gas province. A brief history of the development of the Kharyaginskoye oil field and the history of the development of technologies for multilateral wells drilling at ZARUBEZHNEFT-Dobycha Kharyaga LLC is presented. The article describes the need for technologies in the modern oil and gas industry in terms of complex deposits development with hard-to-recover hydrocarbon reserves in low-permeability reservoirs. The history of the development of the TAML classification of multilateral wells is given. The classification of complexity levels for the construction of TAML multilateral wells is presented, which includes six levels - from the simplest without mechanical connection of the trunks to completely isolated boreholes with the possibility of independent operation of each. The distinctive features of each of the six difficulty levels of drilling multilateral and multi-borehole wells are given. Data on drilled wells at the Kharyaginskoye field is presented, including technologies used and results obtained using various well designs.
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