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Oil recovery process: injection of fatty alcohol followed by soa

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Oil recovery with water containing carbonate salt and CO.sub.2

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Oil recovery with water containing carbonate salt, CO.sub.2, and

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Oil reservoir permeability control

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Oil reservoir permeability control

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Oil reservoir permeability control using polymeric gels

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Oil reservoir permeability profile control with crosslinked wela

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Oilfield flooding polymer

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Olefin sulfonate-improved steam foam drive

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Optimum grading of chemical concentrations in a micellar flood

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Organic nitro compounds as cosurfactants in enhanced oil recover

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Organically crosslinked polyvinyl alcohol copolymeric gels for u

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Organosilicon polymer having nonrandom crosslinkages useful in e

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Overpressured fracturing of deviated wells

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Oxidized alkali lignins and their use in enhanced oil recovery

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Oxidized lignosulfonates as additives in oil recovery processes

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Oxidized lignosulfonates as additives in oil recovery processes

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