发明名称 TOOL JOINT WEAR PROTECTORS
摘要 <p>TOOL JOINT WEAR PROTECTORS A tool joint for well drilling pipe includes a body having a wear protector including a split ring disposed in an annular groove in the tool joint body, the ring segments being welded together and to the groove portion of the body. Hardmetal elements secured in the outer periphery of the ring are irregularly distributed, with the distribution or density of the hardmetal elements being greatest adjacent to the end of the tool joint body and progressively less inwardly from the end of the tool joint body.</p>
申请公布号 CA1037946(A) 申请公布日期 1978.09.05
申请号 CA19760249856 申请日期 1976.04.08
申请人 CHRISTENSEN, INC. 发明人 JURGENS, RAINER;EXNER, GERHARD
分类号 F16L15/00;E21B17/10;F16C33/24;F16L57/00;(IPC1-7):21B17/10;16C29/00 主分类号 F16L15/00
代理机构 代理人
主权项
地址