POLYMERIC PLUGGING COMPOSITION

FIELD: oil production, particularly for isolating lost-circulation zones and for performing repair and isolation works in wells. ^ SUBSTANCE: plugging composition includes urea-formaldehyde resin and alumochloride. Acetone-formaldehyde resin is additionally added to the composition. Urea-formaldehyd...

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Bibliographische Detailangaben
Hauptverfasser:	KUZNETSOVA O.N, ARKHIREEV V.P, KADYROV R.R, SAKHAPOVA A.K
Format:	Patent
Sprache:	eng ; rus
Schlagworte:	ADHESIVES CHEMISTRY 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 POLISHES
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Beschreibung
Zusammenfassung:	FIELD: oil production, particularly for isolating lost-circulation zones and for performing repair and isolation works in wells. ^ SUBSTANCE: plugging composition includes urea-formaldehyde resin and alumochloride. Acetone-formaldehyde resin is additionally added to the composition. Urea-formaldehyde resin and acetone-formaldehyde resin are taken in the ratio of 1:0.07-1.3. The composition includes 35.0-70.0% by weight of urea-formaldehyde resin, 5.0-45.0 % by weight of acetone-formaldehyde resin and 10.0-35.0 % by weight of alumochloride. ^ EFFECT: increased plugging stone strength, extended range of plugging composition hardening and improved stability thereof. ^ 1 ex, 1 tbl