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发明名称
SHOE FOR USE IN THE CONSTRUCTION OF OIL AND GAS WELLS
摘要
A shoe (100) comprises a body portion (101) attachable to casing (105), and a nose portion (103) rotatably mounted on the body portion (101).
申请公布号
WO9709509(A1)
申请公布日期
1997.03.13
申请号
WO1996GB01957
申请日期
1996.08.12
申请人
WEATHERFORD/LAMB, INC.;LUCAS, BRIAN, RONALD
发明人
BUDDE, PETER;VERSTEEG, GUUS
分类号
E21B17/14;(IPC1-7):E21B17/14;E21B7/20
主分类号
E21B17/14
代理机构
代理人
主权项
地址
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