Nuclear magnetic resonance signal acquisition and processing device

A signal acquisition and processing device technology, applied in electron magnetic resonance/nuclear magnetic resonance detection, electric/magnetic detection for well logging records, climate sustainability, etc., can solve the problem of weak signals that cannot be accurately analyzed, Problems such as poor detection results and low detection accuracy achieve the effect of not easy to deform, novel design and accurate detection results

Inactive Publication Date: 2019-01-25
李华
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  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to solve the shortcomings of low detection accuracy and easy distortion in the detection of existing nuclear magnetic logging, especially the inaccurate analysis of weak signals, which makes the detection results not good. NMR signal acquisition and processing device

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  • Nuclear magnetic resonance signal acquisition and processing device
  • Nuclear magnetic resonance signal acquisition and processing device
  • Nuclear magnetic resonance signal acquisition and processing device

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Embodiment Construction

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention.

[0020] refer to Figure 1-3 , a device for acquiring and processing nuclear magnetic resonance signals, comprising a detection end, the detection end adopts a high-strength samarium-cobalt alloy permanent magnet, the detection end is connected with an induction coil, and the induction coil is electrically connected with a signal integration end , the signal integration end is connected to a signal processing end, the signal processing end is connected to a measurement circuit amplifier, the measurement circuit amplifier is connected to a computer, the computer is electrically connected to a DSP chip, and the DSP chip is connected to a signal The output terminal, the ...

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Abstract

The invention discloses a nuclear magnetic resonance signal acquisition and processing device, which comprises a detecting end, wherein the detecting end adopts a high-strength samarium-cobalt alloy permanent magnet, the detecting end is connected with an induction coil, the induction coil is electrically connected a signal integration end, the signal integration end is connected with a signal processing end, the signal processing end is connected with a measurement circuit amplifier, the measurement circuit amplifier is connected with a computer, the computer is internally and electrically connected with a DSP chip, the DSP chip is connected with a signal output end, the signal output end is electrically connected with a display screen, a detection result is displayed on a host interfacein the form of an image, and the detecting end transmits a detection signal of hydrogen nuclei in hydrocarbon and water molecules detected through polarization to the induction coil. The nuclear magnetic resonance signal acquisition and processing device has the advantages of novel design and complete functions, can be used conveniently, and is high in processing precision of the acquired signal processing, so that the acquired detection result is more precise.

Description

technical field [0001] The invention relates to the technical field of geophysical detection equipment, in particular to a device for collecting and processing nuclear magnetic resonance signals. Background technique [0002] Under the action of the geomagnetic field, those hydrogen nuclei whose spin axes do not completely coincide with the geomagnetic field in the formation precess around the geomagnetic field. If a polarized coil is used in the downhole tool to generate a strong pulsed magnetic field perpendicular to the earth's magnetic field (compared with the earth's magnetic field), the spin axis of the hydrogen nuclei is forced to leave the direction of the earth's magnetic field. When the polarized magnetic field is removed, they circle the earth The magnetic field precesses and gradually returns to its original state. The precession of hydrogen nuclei produces a gradually attenuating radio frequency signal in the induction coil, and its amplitude depends on the num...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V3/32
CPCG01V3/32Y02A90/30
Inventor 李华
Owner 李华
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