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Use of fiber optics in deviated flows

Wells – Processes – With indicating – testing – measuring or locating
Reexamination Certificate

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Use of gel-based compositions for reducing the production of wat

Wells – Processes – Cementing – plugging or consolidating
Patent

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Use of helically wound tubular structure in the downhole...

Wells – Processes – Assembling well part
Reexamination Certificate

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Use of helically wound tubular structure in the downhole...

Wells – Processes – Assembling well part
Reexamination Certificate

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Use of hydrocarbon-rich gels as fracturing fluids

Wells – Processes – Placing fluid into the formation
Patent

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Use of hydrogen-free carbon monoxide with steam in recovery of h

Wells – Processes – Chemical inter-reaction of two or more introduced materials
Patent

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Use of land-fill gas to stimulate crude oil production and to re

Wells – Processes – Separating material entering well
Patent

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Use of lightning for extraction of hydrocarbon fuels

Wells – Processes – Electric current or electrical wave energy through earth for...
Patent

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Use of low impact expansion to reduce flow friction

Wells – Processes – Placing or shifting well part
Reexamination Certificate

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Use of manganese oxide in drilling mud and oil well cement slurr

Wells – Processes – Cementing – plugging or consolidating
Patent

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Use of materials as waterflood additives

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

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Use of mineral oils, hydrogenated polyalphaolefin oils and...

Wells – Processes – Chemical inter-reaction of two or more introduced materials
Reexamination Certificate

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Use of mineral oils, hydrogenated polyalphaolefin oils and...

Wells – Processes – Chemical inter-reaction of two or more introduced materials
Reexamination Certificate

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Use of mono and polyalkylene glycol ethers as agents for the rel

Wells – Processes – Freeing stuck object – grappling or fishing in well
Patent

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Use of oil-wetting spacers in cementing against evaporites

Wells – Processes – Cementing – plugging or consolidating
Patent

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Use of oleophilic wick for removing non-aqueous liquids from a s

Wells – Processes – Separating material entering well
Patent

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Use of organic acid chrome complexes to treat clay containing fo

Wells – Processes – Chemical inter-reaction of two or more introduced materials
Patent

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Use of polyalkoxy sulfonate surfactants for inhibition of scale

Wells – Processes
Patent

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Use of polyampholytes to enhance oil and/or gas recovery

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

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Use of polyimides in treating subterranean formations

Wells – Processes – Chemical inter-reaction of two or more introduced materials
Reexamination Certificate

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