| 发明名称 | Bore protector | ||
| 摘要 | The invention provides a bore protector for a tubing hanger, the bore protector is to be arranged in a tubing hanger in a spool in a subsea production Xmas tree for through tubing rotary drilling (TTRD) in an existing production well. The bore protector is distinctive in that it comprises a means to be releasably fastened in at least one of: the spool in the Xmas tree and the tubing hanger, and a wear sleeve extending down into the tubing hanger, covering the tubing hanger sealing surfaces for the tubing hanger plugs, the wear sleeve comprises a shoulder at or near an upper end, the shoulder is arranged on a below positioned seat of a main part of the bore protector, in which position the wear sleeve is releasably fastened. | ||
| 申请公布号 | US9206663(B2) | 申请公布日期 | 2015.12.08 |
| 申请号 | US201213978806 | 申请日期 | 2012.01.11 |
| 申请人 | Aker Subsea AS | 发明人 | Smith André M.;Eide Roar;Dahlborg Bengt;Fjørtoft Urke Magnus;Bostedt Per;Vilhelmsson Joachim |
| 分类号 | E21B7/12;E21B33/076;E21B33/043;E21B17/10 | 主分类号 | E21B7/12 |
| 代理机构 | Winstead PC | 代理人 | Winstead PC |
| 主权项 | 1. A bore protector arranged in a tubing hanger within a spool of a subsea production Xmas tree for through tubing rotary drilling (TTRD) in an existing production well, the bore protector comprising: a means to be releasably fastened in at least one of: the spool of the Xmas tree and the tubing hanger; and a wear sleeve extending down into the tubing hanger, covering tubing hanger sealing surfaces for tubing hanger plugs, the wear sleeve comprising a shoulder at or near an upper end, the shoulder arranged on a below positioned seat of a main part of the bore protector, in which position the wear sleeve shoulder is releasably fastened to the seat. | ||
| 地址 | Lysaker NO | ||