Method for measuring formation resistivity at drill place
A technology of formation resistivity and drill bits, which is applied in the fields of electrical/magnetic detection for well logging records, earthwork drilling, and electromagnetic wave detection, etc., can solve problems such as measurement lag, achieve measurement lag and improve practicability Effect
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[0026] Hereinafter, the present invention will be described in detail with reference to the drawings and examples. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.
[0027] The embodiment of the present invention also provides a device for measuring the formation resistivity at the drill bit, including:
[0028] a tool housing;
[0029] a transmitter configured on the tool housing;
[0030] a receiver arranged on the tool housing at an axial distance from the transmitter;
[0031] A transmit signal coupler, coupled with the transmitter and receiver antennas.
[0032] The above-mentioned transmitter generates an electric signal, and converts the electric signal into an electromagnetic signal and transmits it into the formation through the transmitting antenna. The receiver measures the amplitude and phase of the electromagnetic signal in the formation. The tr...
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