| 发明名称 |
METODO PER LA CENTRALIZZAZIONE DELLE COLONNE PER APPLICAZIONI LEANPROFILE |
| 摘要 |
A centralizer for an oil well drill casing including at least one strip of ceramic or plastic material applied onto an outer wall of the casing. |
| 申请公布号 |
IT1319550(B1) |
申请公布日期 |
2003.10.20 |
| 申请号 |
IT2000MI02713 |
申请日期 |
2000.12.15 |
| 申请人 |
ENI S.P.A. |
发明人 |
CALDERONI ANGELO;ZAUSA FABRIZIO |
| 分类号 |
E21B17/10 |
主分类号 |
E21B17/10 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
|
| 地址 |
|
