DERRICK ASSEMBLY AND METHOD FOR USE OF SAME |
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| 申请号 | EP15807466 | 申请日 | 2015-06-09 | 公开(公告)号 | EP3155207A4 | 公开(公告)日 | 2018-02-28 |
| 申请人 | JOREKA MAN AS; | 发明人 | KALLESTEN JOHN REIDAR; | ||||
| 摘要 | A derrick assembly (1) is described, the derrick assembly (1) including a derrick (11) and a gripping deck (13) which includes a holding device (131) for holding a casing (2), the derrick assembly (1) being characterized by further including a lifting device (12) arranged to lift the gripping deck (13) together with the casing (2). A method of loosening and pulling a casing (2) with said derrick assembly (1) is described as well. | ||||||
| 权利要求 | |||||||
| 说明书全文 | |||||||
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