发明申请
US20160266271A1 HIGH DIRECTIONALITY GALVANIC AND INDUCTION WELL LOGGING TOOLS WITH METAMATERIAL FOCUSING 有权
高度方向性的电磁感应井下测井工具

HIGH DIRECTIONALITY GALVANIC AND INDUCTION WELL LOGGING TOOLS WITH METAMATERIAL FOCUSING
摘要:
Metamaterials are used in well logging measurement tools to provide high directionality galvanic and induction tools having metamaterial focusing. Using metamaterial lenses, currents injected by galvanic tools can be focused in both axial and azimuthal directions. In addition, the focus plane can be shifted away from the tool body into a borehole formation, making measurements more sensitive to zones of interest and less sensitive to boreholes and invaded zones. Another metamaterial lens can bend injected currents toward the head of the tool, adding a look-ahead functionality.
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