This article describes an experience drilling a multilateral "fishbone" well with eight sidetracks and contains geological substantiation of this technology from the production-increase point of view as well as actual results of the eight-lateral well start up and operation. For fishbone wells where each wellbore is a sidetrack from the previous hole, one of the fundamental drilling aspects is kickoff from the parent wellbore. This article is based on the analysis of 114 kickoffs in production wells of the East Messoyakha field where kickoffs with a rotary steerable system (RSS) and performance drilling motor (PDM) were determined beneficial. Additionally, strength analysis and hydraulic calculations for drilling of the longest fishbone at the East Messoyakha field with an extended reach drilling (ERD) factor of 2.95 are discussed. Further, this article highlights the main potential of this technology development and its limitations during a further massive application.
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