Method and means for transmitting data through a drill string in a borehole |
|||||||
| 申请号 | EP82201339 | 申请日 | 1982-10-26 | 公开(公告)号 | EP0080218A3 | 公开(公告)日 | 1985-07-31 |
| 申请人 | SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ B.V.; | 发明人 | Kamp, Anthony Willem; | ||||
| 摘要 | Data are transmitted through a column of drilling fluid in a drill string that is being applied in drilling a borehole in an underground formation. The data are in the form of pressure waves (such as pressure pulses) and are generated by means of a downhole liquid motor (34, 35) that is driven by the drilling fluid. The pressure waves are generated by varying the load on the electric generator (38) driven by the liquid motor. The load is varied to a predetermined pattern that is representative of the data to be transmitted. | ||||||
| 权利要求 | |||||||
| 说明书全文 | |||||||
QQ群二维码
意见反馈
意见反馈