4. Data processing: measuring, calibrating, or testing
  5. Measurement system in a specific environment
  6. Earth science

Herbert M. J. Illfelder

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Determining a borehole azimuth from tool face measurements

Geometrical instruments – Indicator of direction of force traversing natural media – Borehole direction or inclination
Reexamination Certificate

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Distance determination from a magnetically patterned target...

Data processing: measuring – calibrating – or testing – Measurement system in a specific environment – Earth science
Reexamination Certificate

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Method of optimizing a well path during drilling

Data processing: measuring – calibrating – or testing – Measurement system in a specific environment – Earth science
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2280421

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