Electromagnetic wave measurement while drilling system wireless remote receiving device and measuring method and application thereof
A technology of measuring while drilling and receiving devices, which can be used in construction and other directions, and can solve the problems of weak electromagnetic signal detection that have not been mentioned in relevant literature and patents.
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[0053] The invention provides a remote ground receiver device of an electromagnetic measurement-while-drilling system and a corresponding processing method, which are used in the electromagnetic measurement-while-drilling system to receive downhole measurement data in real time.
[0054] The remote wireless receiving device of EM-MWD system is composed of DSP circuit, preamplifier, bandpass filter, coupling transformer, wireless transceiver module, auxiliary module, receiving antenna array and power supply.
[0055] (1) Receiving antenna array
[0056] Receive electromagnetic signals carrying downhole information. The purpose of the array design is to maximize the signal-to-noise ratio of the received data. In the actual implementation process, it is necessary to properly arrange and select the receiving points and their mutual positions. Using a line array instead of an area array avoids the complexity of debugging and reduces costs. Such as figure 1 shown.
[0057] (2) ...
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