Engineers from INK-Service of Irkutsk Oil Company (INK) completed a 4,100 m horizontal borehole at the Bolshetirsky field in Eastern Siberia in July 2026. The work ran 90 days and nights non-stop in geology rated 7.1 on an international difficulty scale, using automatic directional control and downhole motors. The article links the record to the turbodrill invented by Soviet engineer Matvei Kapelyushnikov, presented in 1922, which uses high-pressure drilling mud to spin the bit instead of rotating the entire steel pipe string. Pyotr Shumilov later removed the gearbox and stacked multiple turbine stages, making the device a core tool in well drilling. The technology was licensed to France's Neyrpic in 1956 and is now used by companies including Gazprom Neft, Lukoil and Tatneft.
Summary written by Upside AI from the original article. Read the source for full details.
Original headline: Nga thiết lập kỳ tích 4.100m ở lòng đất: "Biết ơn" phát minh thế kỷ từ kỹ sư trẻ Liên Xô
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