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Secondary recovery process utilizing an acrylamido alkanesulfoni

Wells – Processes – Distinct – separate injection and producing wells
Patent

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Secondary recovery process utilizing water saturated with gas

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Selected well completion for improving vertical conformance of s

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Selective electromagnetic production tool

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Reexamination Certificate

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Selective electromagnetic production tool

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Selective gel system for permeability profile control

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Selective gelation polymer for profile control in CO.sub.2 flood

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Selective permeability reduction of oil-free zones of subterrane

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Selective placement of a permeability-reducing material to inhib

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Selective plugging of formations with foam

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Selectively controlling fluid flow through the higher permeabili

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Selectively controlling the flow of fluids through subterranean

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Sequential fluid injection process for oil recovery from a gas c

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Simultaneous microemulsion-aqueous phase flooding process

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Simultaneous water and gas injection into earth formations

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Slow acidizing of geological formations

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Soda-anthraquinone lignin sacrificial agents in oil recovery

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Sodium hydroxide treatment of field water in a biopolymer comple

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Sodium hydroxide treatment of field water in a biopolymer comple

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Soil vapor extraction system

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