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E21B 49/00

Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells

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Edits on 16 Mar, 2022
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Golden AI
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E21B 49/08
Edits on 5 Mar, 2022
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E21B 49/02
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 E21B 49/00

Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells

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E21B
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http://data.epo.org/linked-data/def/cpc/E21B49-00

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