| 摘要 |
Disclosed is an auxiliary system for use in drilling, used for establishing an electrical connection between wells or different branches of one and the same well by means of a conductive wire and/or circuit. The system comprises an insulation ring (2) arranged on a drill rod (5) of a well being drilled (1); two ends of the insulation ring (2) are provided with an emitter power source (3), a well mouth end of a sleeve (7) is connected to a well mouth end of a sleeve (8) of an existing well (6) via a conductive wire, and a signal receiver (10) is connected in series with the conductive wire, thereby forming a loop which can transmit electromagnetic data between drilled wells and can be further used for sleeve detection, and electrical energy consumption in the strata can be reduced and transmission efficiency can be improved. |
