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Wellbore drilling technique using eccentric tool joints to mitigate pressure-differential sticking
Wellbore drilling technique using eccentric tool joints to mitigate pressure-differential sticking
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机译:使用偏心工具接头的井眼钻井技术可减轻压差卡钻
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摘要
A rotary method and apparatus are described to mitigate differential sticking of a drill string during the drilling of a wellbore. Eccentrically bored tool joints are used for interconnecting joints of drill pipe together into a drill string for use in drilling the wellbore. The drill string is rotated in the wellbore, causing the drill pipe to be eccentrically moved in the wellbore during the drilling operation to better remove the cuttings from the wellbore and mitigate differential sticking of the drill string.
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