4. Earth boring, well treating, and oil field chemistry
  5. Earth boring
  6. Contains inorganic component other than water or clay
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Drilling fluid

Earth boring – well treating – and oil field chemistry – Earth boring – Contains inorganic component other than water or clay
Patent

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Drilling fluid additive system containing graphite and carrier

Earth boring – well treating – and oil field chemistry – Earth boring – Contains inorganic component other than water or clay
Reexamination Certificate

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Drilling fluid additive system containing talc &amp; carrier

Earth boring – well treating – and oil field chemistry – Earth boring – Contains inorganic component other than water or clay
Reexamination Certificate

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Drilling fluid additive system containing talc and graphite

Earth boring – well treating – and oil field chemistry – Earth boring – Contains inorganic component other than water or clay
Reexamination Certificate

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Drilling fluid systems for reducing circulation losses

Earth boring – well treating – and oil field chemistry – Earth boring – Contains inorganic component other than water or clay
Reexamination Certificate

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Drilling fluids comprising sized graphite particles

Earth boring – well treating – and oil field chemistry – Earth boring – Contains inorganic component other than water or clay
Reexamination Certificate

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