4. Measuring and testing
  5. Borehole or drilling
  6. Formation logging

Richard J. Drozd

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Identifying zones of origin of annular gas pressure

Wells – Processes – With indicating – testing – measuring or locating
Reexamination Certificate

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Method and apparatus for performing rapid isotopic analysis...

Radiant energy – Geological testing or irradiation – Well testing apparatus and methods
Reexamination Certificate

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Method and apparatus for performing rapid isotopic analysis...

Radiant energy – Geological testing or irradiation – Well testing apparatus and methods
Reexamination Certificate

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Use of cesium as a tracer in coring operations

Measuring and testing – Borehole or drilling – Formation logging
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2813101

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