DTEM WITH SHORT SPACING FOR DEEP, AHEAD OF THE DRILL BIT MEASUREMENTS |
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| 申请号 | PCT/US2011049650 | 申请日 | 2011-08-30 | 公开(公告)号 | WO2012030768A2 | 公开(公告)日 | 2012-03-08 |
| 申请人 | BAKER HUGHES INC; ITSKOVICH GREGORY B; REIDERMAN ARCADY; RABINOVICH MICHAEL B; MARTAKOV SERGEY; IOMDINA EMMA; | 发明人 | ITSKOVICH GREGORY B; REIDERMAN ARCADY; RABINOVICH MICHAEL B; MARTAKOV SERGEY; IOMDINA EMMA; | ||||
| 摘要 | A transmitter on a bottomhole assembly (BHA) is used for generating a transient electromagnetic signal in an earth formation. A processor estimates the distance to a resistivity interface using a signal produced by a receiver on the BHA. The transmitter-receiver distance may be less than 1m. The estimation of the distance is done in real time using a thin conductive sheet approximation. | ||||||
| 权利要求 | |||||||
| 说明书全文 | |||||||
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