| 发明名称 |
METHODS AND MECHANISMS TO SET A HOLLOW DEVICE INTO AND TO RETRIEVE SAID HOLLOW DEVICE FROM A FLOW PIPE |
| 摘要 |
<p>A method to set a hollow device (3) into an undersea flow pipe (1) is disclosed. The hollow device (3) is driven by a flexible pig (4) into the undersea flow pipe (1) to a point where stop means (5) halt the displacement of the hollow device (3), setting it into position.</p> |
| 申请公布号 |
CA2436957(A1) |
申请公布日期 |
2002.08.08 |
| 申请号 |
CA20012436957 |
申请日期 |
2001.05.29 |
| 申请人 |
PETROLEO BRASILEIRO S.A. - PETROBRAS |
发明人 |
DE ALMEIDA, ALCINO RESENDE |
| 分类号 |
B08B9/055;F16L55/46;(IPC1-7):E21B23/08;F16L55/38;E21B34/06;E21B34/00;E21B23/00 |
主分类号 |
B08B9/055 |
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