Kola Superdeep Borehole
The Kola Superdeep Borehole is the result of a scientific drilling project of the former USSR. The project attempted to drill as deep as possible into the Earth's crust. Drilling began on 24 May 1970 on the Kola Peninsula, using the Uralmash-4E, and later the Uralmash-15000 series drilling rig. A number of boreholes were drilled by branching from a central hole. The deepest, SG-3, reached 12,261 metres (40,230 ft) in 1989, and remains the deepest hole ever drilled. The longest hole ever drilled is the 12,290 m (40,300 ft) Maersk Oil BD-04A well at Al-Shaheen field in Qatar, but the Maersk hole was primarily horizontal.
- ISBN-13: 9786130712402
- Wydawca: Alphascript Publishing
- Język: Angielski
- Oprawa: Miękka
- Rok wydania: 2010
- Liczba stron: 80
- Wymiary: 150×220×5 mm
- Waga: 139 g