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1. WO2006102044 - COMPOSITIONS AND USE OF MONO-AND POLYENOIC ACIDS FOR BREAKING VES-GELLED FLUIDS

Publication Number WO/2006/102044
Publication Date 28.09.2006
International Application No. PCT/US2006/009658
International Filing Date 16.03.2006
IPC
E21B 43/267 2006.01
EFIXED CONSTRUCTIONS
21EARTH OR ROCK DRILLING; MINING
BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
43Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
25Methods for stimulating production
26by forming crevices or fractures
267reinforcing fractures by propping
E21B 43/25 2006.01
EFIXED CONSTRUCTIONS
21EARTH OR ROCK DRILLING; MINING
BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
43Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
25Methods for stimulating production
C09K 8/68 2006.01
CCHEMISTRY; METALLURGY
09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
KMATERIALS FOR APPLICATIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
8Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
60Compositions for stimulating production by acting on the underground formation
62Compositions for forming crevices or fractures
66Compositions based on water or polar solvents
68containing organic compounds
CPC
C09K 2208/26
CCHEMISTRY; METALLURGY
09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
KMATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
2208Aspects relating to compositions of drilling or well treatment fluids
26Gel breakers other than bacteria or enzymes
C09K 2208/30
CCHEMISTRY; METALLURGY
09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
KMATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
2208Aspects relating to compositions of drilling or well treatment fluids
30Viscoelastic surfactants [VES]
C09K 8/602
CCHEMISTRY; METALLURGY
09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
KMATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
8Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
60Compositions for stimulating production by acting on the underground formation
602containing surfactants
C09K 8/68
CCHEMISTRY; METALLURGY
09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
KMATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
8Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
60Compositions for stimulating production by acting on the underground formation
62Compositions for forming crevices or fractures
66Compositions based on water or polar solvents
68containing organic compounds
Applicants
  • BAKER HUGHES INCORPORATED [US]/[US] (AllExceptUS)
  • CREWS, James, B. [US]/[US] (UsOnly)
Inventors
  • CREWS, James, B.
Agents
  • RIDDLE, J., Albert
Priority Data
60/662,33616.03.2005US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) COMPOSITIONS AND USE OF MONO-AND POLYENOIC ACIDS FOR BREAKING VES-GELLED FLUIDS
(FR) COMPOSITIONS ET UTILISATION D’ACIDES MONO- ET POLYENOIQUES POUR CASSER DES FLUIDES GELIFIES PAR DES ATAVE
Abstract
(EN)
Fluids viscosified with viscoelastic surfactants (VESs) may have their viscosities reduced (gels broken) by the direct or indirect action of a composition that contains at least one unsaturated fatty acid, such as a monoenoic acid and/ or polyenoic acid. The unsaturated fatty acid may be contained in an oil-soluble internal phase of the fluid. The breaking composition is believed to act possibly by rearranging, disaggregating or otherwise attacking the micellar structure of the VES-gelled fluid. In a specific, non-limiting instance, a brine fluid gelled with an amine oxide surfactant can have its viscosity broken with an oil such as flax (linseed) oil, soybean oil and/or fish oils containing relatively high amounts of unsaturated fatty acids. The unsaturated fatty acids are thought to auto-oxidize into products such as aldehydes, ketones and saturated fatty acids that break the VES gel.
(FR)
Les fluides rendus visqueux par des agents tensioactifs viscoélastiques (ATAVE) peuvent subir une réduction de leurs viscosités (gels cassés) par l'action directe ou indirecte d’une composition qui contient au moins un acide gras insaturé, tel qu'un acide monoénoïque et/ou un acide polyénoïque. L'acide gras insaturé peut être contenu dans une phase interne soluble dans l'huile du fluide. On pense que la composition cassante agit probablement par réarrangement, désagrégement ou par un autre type d’attaque de la structure micellaire du fluide gélifié par les ATAVE. Dans un exemple spécifique non limitatif, un fluide de saumure gélifié par un agent tensioactif de type oxyde d'amine peut avoir sa viscosité cassée avec une huile telle que l’huile de (graine de) lin, l'huile de soja et/ou des huiles de poissons contenant des quantités relativement élevées d'acides gras insaturés. Les acides gras insaturés sont supposés s’auto-oxyder en produits tels que des aldéhydes, des cétones et des acides gras saturés qui cassent le gel obtenu avec les ATAVE.
Also published as
NO20075096
RU2007137986
Latest bibliographic data on file with the International Bureau