发明名称 |
WELLBORE CIRCULATION SYSTEM |
摘要 |
A tong as may be used for a continuous circulation system in a wellbore. The tong has a housing with a hollow interior. A plurality of spaced apart jaw assemblies reside within the housing's hollow interior for engaging a portion of a tubular to be gripped and rotated by the tong. A gear wheel is secured to the housing for rotating the housing and the jaw assemblies. The gear wheel includes a toothed outer circumference for mating with teeth of a drive shaft of a driving motor. A gear flange is movably mounted on the gear wheel such that rotation of the gear wheel does not rotate the gear flange. |
申请公布号 |
EP1264069(B1) |
申请公布日期 |
2014.01.22 |
申请号 |
EP20010910052 |
申请日期 |
2001.03.12 |
申请人 |
WEATHERFORD/LAMB, INC. |
发明人 |
ALLEN, JOHN, TIMOTHY;BOX, STEVEN, ANTONY;PIETRAS, BERND-GEORG;HABETZ, JEFFREY, MICHAEL |
分类号 |
E21B19/16;E21B3/04;E21B17/00;E21B19/10;E21B19/24;E21B21/01;E21B21/10;E21B33/068 |
主分类号 |
E21B19/16 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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