Apparatus for freeing an object underground, and the application of such apparatus |
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| 申请号 | EP00203119.3 | 申请日 | 2000-09-11 | 公开(公告)号 | EP1083297A3 | 公开(公告)日 | 2003-03-26 |
| 申请人 | 3-D Drilling BV; | 发明人 | Visser, Teunis; | ||||
| 摘要 | The invention relates to a method for freeing an object underground, such as a pipe or a drilling rod used for horizontal drilling. The apparatus according to the invention comprises a body (1) having an opening for receiving the object (A) to be freed. The body is provided in the circumferential direction of object (A) with soil material-loosening means (3). These soil material-loosening means (3) are for example nozzles through which an aqueous solution is spurted. | ||||||
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| 说明书全文 | |||||||
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