FIELD: drilling and operation of wells, possible use for receiving information transferred by well module of telemetric system by means of magnetic flow via column of pipes.
SUBSTANCE: coil has body made of non-magnetic material in form of cylinder with longitudinal slit and sides, on external surface of cylinder winding is wound. Under the winding a permalloy layer is made. Winding is protected by grounded screen, made of electro-conductive magnetic material.
EFFECT: increased quality of receipt.
2 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| DOWNHOLE INFORMATION TRANSMISSION DEVICE | 2004 |
|
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