Roller cone core bit with spiral stabilizers
作者： Johnny N. Castle , Marvin Gearhart , Paul G. Parys
DOI:
关键词: Stabilizer (aeronautics) 、 Bit (horse) 、 Core (optical fiber) 、 Acoustics 、 Electrical engineering 、 Engineering 、 Cone (topology) 、 Coring 、 Spiral
摘要: This invention relates to an improved roller cone coring bit that includes spiral stabilizer blades on the body. The reduce whirling tendency of bit, thereby enhancing ability cut and recover a continuous core.
lens.org 参考文章(3)
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Chuan Chin Teng, Thomas R. Beasley, Spiralling tapered slip-on drill string stabilizer ,(1986)