4. Earth boring, well treating, and oil field chemistry
  5. Earth boring
  6. Contains organic component

Josiane Durrieu

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Biodegradable drilling mud and process for its preparation

Earth boring – well treating – and oil field chemistry – Earth boring – Contains organic component
Reexamination Certificate

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Process for using biodegradable drilling muds

Boring or penetrating the earth – Processes – Boring with specific fluid
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2482311

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