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Nuclear magnetic resonance and transient electromagnetic combined instrument and method

A transient electromagnetic and nuclear magnetic resonance technology, which is applied in magnetic resonance measurement, electron magnetic resonance/nuclear magnetic resonance detection, and nuclear magnetic resonance image system for measurement, etc., can solve problems such as waste of manpower and time, large investment, and waste of money , to achieve the effects of reducing equipment investment, overcoming the small emission current, and improving detection efficiency and accuracy

Inactive Publication Date: 2007-03-28
JILIN UNIV
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  • Abstract
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  • Claims
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Problems solved by technology

However, it is too much investment to use two devices, and a lot of repetitive work is required during measurement, which wastes money, manpower and time.

Method used

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  • Nuclear magnetic resonance and transient electromagnetic combined instrument and method
  • Nuclear magnetic resonance and transient electromagnetic combined instrument and method
  • Nuclear magnetic resonance and transient electromagnetic combined instrument and method

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Embodiment Construction

[0025] Below in conjunction with accompanying drawing and embodiment describe in further detail:

[0026] The computer 1 is connected to the main control unit 2 through a serial port or USB port, the emission control unit 3 is connected to the high-power power supply 4 through the data bus, connected to the H-bridge circuit 5 through the interactive signal line, and connected to the switching switch 6 through the control line. The power supply 4 is connected to the switch 6 via the H bridge 5, and the main control unit 2 is connected to the transmitting control unit 3 and the receiving control unit 15 through the SPI serial interface;

[0027] Transient electromagnetic working mode: the output end of the H-bridge 5 is directly connected to the two ends of the transmitting coil 8 to generate a transient electromagnetic signal, and the receiving coil 12 sends the transient electromagnetic signal to the broadband amplification unit 13 for signal conditioning and then sends it to t...

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Abstract

The invention discloses a geophysical exploration device and the method which combines the nuclear magnetic resonance and the transient electromagnetism. First to select the coupled device in the transient electromagnetism mode, and it lays the emission loop and the receiving loop to detect every measuring point in the detecting section and treat the transient electromagnetism data to find the low electrical resistivity point; then it changes to the nuclear magnetic resonance mode and lays the emission loop using the demarcated abnormal detecting point as the center, so it compares the detected data or the figure with the resistivity detected by the transient electromagnetism to judge the true or false of the detected resistivity. The invention can decrease the device cost and improve the detecting efficient and the precision.

Description

technical field [0001] The invention relates to a geophysical prospecting device and method, in particular to a geophysical prospecting device and method combining nuclear magnetic resonance and transient electromagnetics. Background technique [0002] Nuclear magnetic resonance method (Surface Nuclear Magnetic Resonance Method, SNMR method for short), transient electromagnetic method (Transient Electromagnetic Method, TEM for short). [0003] US6177794 discloses a new technology for finding underground liquid minerals with nuclear magnetic resonance phenomenon by using macroscopically manifested nuclear magnetic resonance phenomenon, using a group of phase-controllable receiving antenna arrays and receiving antennas in wells to more accurately measure the presence of underground liquid minerals. The liquid of nuclear magnetic resonance phenomenon, this method uses the coil combination on the ground and underground to receive signals at the same time, which is used to receiv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V3/00G01V3/14G01V3/12G01V3/32G01R33/48
Inventor 林君段清明王应吉王中兴孙淑琴荣亮亮
Owner JILIN UNIV
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