4. Liquid purification or separation
  5. Processes
  6. Treatment by living organism

Christian Zurdo

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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 enzyme pretreatment of drill cuttings

Liquid purification or separation – Processes – Treatment by living organism
Patent

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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-272190

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