COMPOSITIONS AND METHODS FOR COMPLETING SUBTERRANEAN WELLS

Well treatment compositions comprise at least one cleavable surfactant. The surfactant may be anionic, nonionic or cationic or a combination thereof. When added to spacer fluids, chemical washes or both, the compositions promote the removal of non-aqueous drilling fluids from casing surfaces. Additi...

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Bibliographic Details
Main Author KEFI, SLAHEDDINE
Format Patent
LanguageEnglish
French
Published 16.10.2014
Subjects
ADHESIVES
CHEMISTRY
DYES
MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE
METALLURGY
MISCELLANEOUS APPLICATIONS OF MATERIALS
MISCELLANEOUS COMPOSITIONS
NATURAL RESINS
PAINTS
POLISHES
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Summary:Well treatment compositions comprise at least one cleavable surfactant. The surfactant may be anionic, nonionic or cationic or a combination thereof. When added to spacer fluids, chemical washes or both, the compositions promote the removal of non-aqueous drilling fluids from casing surfaces. Additionally, the treated casing surfaces are water wet, thereby promoting optimal bonding to cement. La présente invention concerne des compositions pour le traitement de puits, comprenant au moins un tensioactif clivable. Le tensioactif peut être anionique, non-ionique ou cationique, ou une combinaison de ceux-ci. Ajoutées à des fluides tampons, des eaux de lavage chimiques, ou les deux, les compositions favorisent l'élimination, de fluides de forage non aqueux pour en débarrasser des surfaces de tubage. En outre, les surfaces de tubage traitées sont mouillées à l'eau, ce qui favorise un collage optimal au ciment.
Bibliography:Application Number: WO2013IB01067