MANUFACTURING METHODS FOR HIGH SHEAR ROLLER CONE BITS
摘要
A method of manufacturing a roller cone drill bit may include forming a body of a single piece having an upper end and a lower end; machining at the lower end of the body at least two journals extending downward and radially outward from a central axis of the body; machining at least one of a ball passage, a hydraulic fluid passageway, a grease reservoir, and a lubricant passageway; and mounting roller cones on the at least two journals.
申请公布号
WO2011014591(A2)
申请公布日期
2011.02.03
申请号
WO2010US43604
申请日期
2010.07.29
申请人
SMITH INTERNATIONAL, INC.;BIJAI, RAHUL;ZHANG, ZHEHUA;BHADBHADE, VIKRANT;CENTALA, PRABHAKARAN, K.
发明人
BIJAI, RAHUL;ZHANG, ZHEHUA;BHADBHADE, VIKRANT;CENTALA, PRABHAKARAN, K.