4. Wells
  5. Processes
  6. Cementing, plugging or consolidating

John Peter Crawshaw

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Compositions and processes for treating subterranean formations

Boring or penetrating the earth – Processes – Chemical reaction with earth formation or drilling fluid...
Reexamination Certificate

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Drilling fluid

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

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Emulsion for well and formation treatment

Wells – Processes – Chemical inter-reaction of two or more introduced materials
Reexamination Certificate

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Plug placement method

Wells – Processes – Cementing – plugging or consolidating
Patent

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Profile ID: LFUS-PAI-P-1822928

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