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公开(公告)号：US11163086B2
公开(公告)日：2021-11-02
申请号：US16477109
申请日：2018-01-10
Applicant: University of Houston System
Inventor： Jiefu Chen , Xinyu Liu , David R. Jackson
IPC: G01V3/30 , E21B47/002 , E21B49/00 , G01N22/00
Abstract: An oil-based mud wellbore imaging apparatus for measuring formation permittivity and resistivity includes a reflectometry-type microwave scanning system. The system contains at least one high-Q microstrip resonator with one or more slots on the top surface. The microstrip resonator is excited by one port, which is fed with electromagnetic signals by a coaxial cable. From the phase detection of signal at the port, the formation resistivity and permittivity can be determined and corresponding borehole images can be generated.
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公开(公告)号：US10756575B2
公开(公告)日：2020-08-25
申请号：US15749637
申请日：2016-08-03
Applicant: University of Houston System
Inventor： Xiyao Xin , Ji Chen , David R. Jackson
Abstract: A wireless power transfer system may provide coils that are respectively position on upper and lower ends of a pipe to allow power to be wirelessly transferred. Additionally, the system may also provide a soft ferrite layer placed on the upper and lower pipe sections to enhance the magnetic coupling so that the wireless power transfer efficiency can be maintained at a sufficient level when the coil separation is relatively large. Notably, this ferrite layer may span most or the entirely of the region between the coils to further enhance performance. In some cases, a ferrite core may be position between the coils and the pipe as well. In some cases, the pipe may include a tool section that may be non-conductive or results in a discontinuity in the ferrite layer. However, the setup of the system allows power to be wirelessly transferred despite such discontinuity.
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公开(公告)号：US20180233277A1
公开(公告)日：2018-08-16
申请号：US15749637
申请日：2016-08-03
Applicant: University of Houston System
Inventor： Xiyao Xin , Ji Chen , David R. Jackson
Abstract: A wireless power transfer system may provide coils that are respectively position on upper and lower ends of a pipe to allow power to be wirelessly transferred. Additionally, the system may also provide a soft ferrite layer placed on the upper and lower pipe sections to enhance the magnetic coupling so that the wireless power transfer efficiency can be maintained at a sufficient level when the coil separation is relatively large. Notably, this ferrite layer may span most or the entirely of the region between the coils to further enhance performance. In some cases, a ferrite core may be position between the coils and the pipe as well. In some cases, the pipe may include a tool section that may be non-conductive or results in a discontinuity in the ferrite layer. However, the setup of the system allows power to be wirelessly transferred despite such discontinuity.
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