METHOD FOR REGENERATION OF USED HALIDE FLUIDS

A method for regenerating a used halide fluid comprising a density greater than 9.0 lbs/gal. (1.078 g/cm ) and containing both soluble and insoluble impurities. This method comprises the steps of (1) adding acid to the used halide fluid so that the pH is within a range of approximately 0 to 10.0; (2...

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Main Authors POLKINGHORN, THOMAS, WILLIAM, HOWARD, LYLE, H, SYMENS, RAYMOND, D, MISHRA, SURENDRA, KUMAR
Format Patent
LanguageEnglish
French
Published 19.02.2004
Edition7
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Abstract A method for regenerating a used halide fluid comprising a density greater than 9.0 lbs/gal. (1.078 g/cm ) and containing both soluble and insoluble impurities. This method comprises the steps of (1) adding acid to the used halide fluid so that the pH is within a range of approximately 0 to 10.0; (2) contacting the used halide fluid with halogen to increase the density to at least 10.0 lbs./gal., (1.198 g/cm ) maintain the desired true crystallization temperature of the fluid and oxidize soluble impurities; (3) adding a reducing agent while adjusting the temperature to a minimum of 10°C; (4) contacting the fluid with an alkali to neutralize excess acid; and (5) separating any suspended solid impurities from the fluid. L'invention concerne un procédé de régénération d'un fluide halogéné usé dont la densité est supérieure à 9,0 lbs/gal (1,078 g/cm )et contenant des impuretés à la fois solubles et insolubles. Ce procédé consiste (1) à ajouter de l'acide au fluide usé de manière que le pH soit approximativement compris entre 0 et 10 ; (2) à mettre en contact le fluide halogéné usé avec l'halogène afin d'augmenter la densité jusqu'à au moins 10 lbs/gal (1,198 g/cm ), à maintenir la véritable température de cristallisation désirée du fluide et à oxyder les impuretés solubles ; (3) à ajouter un agent réducteur tout en ajustant la température à une température minimale de 10 DEG C ; (4) à mettre en contact le fluide avec un alcali afin de neutraliser l'excès d'acide ; et (5) à séparer n'importe quelles impuretés suspendue solides du fluide.
AbstractList A method for regenerating a used halide fluid comprising a density greater than 9.0 lbs/gal. (1.078 g/cm ) and containing both soluble and insoluble impurities. This method comprises the steps of (1) adding acid to the used halide fluid so that the pH is within a range of approximately 0 to 10.0; (2) contacting the used halide fluid with halogen to increase the density to at least 10.0 lbs./gal., (1.198 g/cm ) maintain the desired true crystallization temperature of the fluid and oxidize soluble impurities; (3) adding a reducing agent while adjusting the temperature to a minimum of 10°C; (4) contacting the fluid with an alkali to neutralize excess acid; and (5) separating any suspended solid impurities from the fluid. L'invention concerne un procédé de régénération d'un fluide halogéné usé dont la densité est supérieure à 9,0 lbs/gal (1,078 g/cm )et contenant des impuretés à la fois solubles et insolubles. Ce procédé consiste (1) à ajouter de l'acide au fluide usé de manière que le pH soit approximativement compris entre 0 et 10 ; (2) à mettre en contact le fluide halogéné usé avec l'halogène afin d'augmenter la densité jusqu'à au moins 10 lbs/gal (1,198 g/cm ), à maintenir la véritable température de cristallisation désirée du fluide et à oxyder les impuretés solubles ; (3) à ajouter un agent réducteur tout en ajustant la température à une température minimale de 10 DEG C ; (4) à mettre en contact le fluide avec un alcali afin de neutraliser l'excès d'acide ; et (5) à séparer n'importe quelles impuretés suspendue solides du fluide.
Author SYMENS, RAYMOND, D
MISHRA, SURENDRA, KUMAR
HOWARD, LYLE, H
POLKINGHORN, THOMAS, WILLIAM
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Snippet A method for regenerating a used halide fluid comprising a density greater than 9.0 lbs/gal. (1.078 g/cm ) and containing both soluble and insoluble...
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SubjectTerms EARTH DRILLING
EARTH DRILLING, e.g. DEEP DRILLING
FIXED CONSTRUCTIONS
MINING
OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS
Title METHOD FOR REGENERATION OF USED HALIDE FLUIDS
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