| 发明名称 |
TUBING COLLAR |
| 摘要 |
A collar for electrically insulating between upper and lower tubing sections in which load bearing insulating materials in the collar are isolated from fluids both interior and exterior the collar. |
| 申请公布号 |
AU3575289(A) |
申请公布日期 |
1989.11.29 |
| 申请号 |
AU19890035752 |
申请日期 |
1989.05.02 |
| 申请人 |
PRODUCTION TECHNOLOGIES INT INC |
发明人 |
BERNARD J. EASTLUND;KENNETH J. SCHMITT;DOUGLAS C. ANDERSON |
| 分类号 |
F16L11/127;E21B17/00;E21B36/00;E21B36/04;F16L9/147;F16L17/00;F16L25/02 |
主分类号 |
F16L11/127 |
| 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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