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rotary drilling bits including at least an element that extends in a substantially helical, methods for azionarle and design.
rotary drilling bits including at least an element that extends in a substantially helical, methods for azionarle and design.
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机译:旋转钻头包括至少一个基本呈螺旋状延伸的元件,用于方差和设计方法。
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摘要
A method of designing a rotary drill bit includes selecting and positioning a plurality of cutting elements on a rotary drill bit. At least one substantially helically extending feature is selected and positioned to rotationally follow at least one of the plurality of cutting elements, the at least one substantially helically extending feature exhibiting a selected maximum Helical Pitch.
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