Compositions and methods for servicing subterranean wells

Aqueous fluids containing hydrophobic particles are effective media for cleaning water-base drilling fluids and drilling fluid solids from the interior surface of a casing string. Hydrophobic fibers may be added to a drilling fluid, a spacer fluid, a chemical wash, or combinations thereof. The discl...

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Bibliographische Detailangaben
Hauptverfasser:	Jain, Bipin, Fu, Diankui
Format:	Patent
Sprache:	eng
Schlagworte:	ADHESIVES CHEMISTRY CLEANING CLEANING IN GENERAL DYES EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING FIXED CONSTRUCTIONS MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE METALLURGY MINING MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS PAINTS PERFORMING OPERATIONS POLISHES PREVENTION OF FOULING IN GENERAL TRANSPORTING
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Beschreibung
Zusammenfassung:	Aqueous fluids containing hydrophobic particles are effective media for cleaning water-base drilling fluids and drilling fluid solids from the interior surface of a casing string. Hydrophobic fibers may be added to a drilling fluid, a spacer fluid, a chemical wash, or combinations thereof. The disclosed fluids may be employed during primary cementing operations where it is not possible to use a bottom plug.