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Process for the downhole upgrading of extra heavy crude oil

Earth boring – well treating – and oil field chemistry – Well treating – Contains intended gaseous phase at entry into wellbore
Patent

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Process for the facilitated waste disposal of working substances

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

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Process for treating an oil well

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

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Process for treating an oil well

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

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Process for treating an oil well

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

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Process of diverting stimulation fluids

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

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Process of hydraulic fracturing using a viscoelastic...

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

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Process to enhance removal of adhering solids from the surface o

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

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Process to prepare borozirconate solution and use as...

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

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Product for coating wellbore screens

Earth boring – well treating – and oil field chemistry – Well treating – Contains enzyme or living micro-organism
Reexamination Certificate

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Proppants and anti-flowback additives made from sillimanite...

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

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Proppants and their manufacture

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

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Pumice containing compositions for cementing a well

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

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