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1.发明授权公开(公告)号：US11280932B2
公开(公告)日：2022-03-22
申请号：US16420010
申请日：2019-05-22
发明人： Guangzhi Liao , Lizhi Xiao , Yangyang Xu , Wei Liu , Yao Wei
摘要： Provided are a main control system and a device for a nuclear magnetic resonance logging while drilling tool, the system includes: a digital signal processor, an auxiliary measurement module, a pulse signal generation module and a memory disposed in a downhole drilling tool; wherein the digital signal processor is communicatively connected to an upper computer arranged on the ground, the auxiliary measurement module and the pulse signal generation module respectively; the memory is communicatively connected to the pulse signal generation module. The main control system and a device for a nuclear magnetic resonance logging while drilling tool achieve the effect of improving the accuracy of the logging data.
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公开(公告)号：US10746825B2
公开(公告)日：2020-08-18
申请号：US16238369
申请日：2019-01-02
发明人： Lizhi Xiao , Guangzhi Liao , Wei Liu , Yao Wei , Yangyang Xu
IPC分类号： G01R33/36 , G01R33/34 , G01R33/3415 , G01N24/08 , G01V3/32
摘要： Provided is an array antenna driving method and device for a three-dimensional scanning nuclear magnetic resonance imager, wherein each antenna to be operated is driven to transmit a nuclear magnetic pulse signal by receiving a control command sent by a control system; parsing the control command to generate a pulse transmission timing signal and an antenna switching control signal; processing an externally inputted high voltage signal according to the pulse transmission timing signal to output high voltage radio frequency pulses of a plurality of channels; and selecting a high voltage radio frequency pulse of at least one channel and the antenna to be operated in the nuclear magnetic resonance pulse array antenna according to the antenna switching control signal, and superposing the selected high voltage radio frequency pulse. The device of the present invention can improve multi-layer slice information detection of signals in circumferentially different azimuth zones.
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