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发明名称
METHOD FOR STABILIZING THE ROTATION AXIS OF DRILL STRING BOTTOM- HOLE ASSEMBLY
摘要
申请公布号
SU1754875(A1)
申请公布日期
1992.08.15
申请号
SU19864179804
申请日期
1986.10.27
申请人
TS LABORATORIYA NI O RABOT OBEDINENIYA "KUJBYSHEVNEFT"
发明人
ENKOV OLEG N,SU;RAZUMOV VLADISLAV B,SU
分类号
E21B17/00
主分类号
E21B17/00
代理机构
代理人
主权项
地址
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