4. Wells
  5. Processes
  6. Heating, cooling or insulating

Yiyan Chen

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Additive for viscoelastic fluid

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

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Additive for viscoelastic fluid

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

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Arch bridge

Bridges – Arch
Reexamination Certificate

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Carbon dioxide foamed fluids

Colloid systems and wetting agents; subcombinations thereof; pro – Continuous liquid or supercritical phase: colloid systems;... – Having discontinuous gas or vapor phase – e.g. – foam:
Reexamination Certificate

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Foamed viscoelastic surfactants

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

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Profile ID: LFUS-PAI-P-2181705

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