METHOD OF ACID TREATMENT OF BOTTOM-HOLE ZONE OF NONUNIFORM OIL FORMATION

oil-producing industry. SUBSTANCE: method consists in successive injection into formation of stabilized slime of production of high-ash calcium sulfate detergent-dispersive additive, hydrochloric acid with water-soluble alcohol and surfactant, and then, hydrocarbon solvent. EFFECT: higher efficiency...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	VAKHITOV M.F, FARKHUTDINOV G.N, VERIJA E.I, KHAJRULLIN I.A, ISMAGILOV T.A, PIKALEV S.A, VAKHITOV T.M, TELIN A.G
Format:	Patent
Sprache:	eng
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:	oil-producing industry. SUBSTANCE: method consists in successive injection into formation of stabilized slime of production of high-ash calcium sulfate detergent-dispersive additive, hydrochloric acid with water-soluble alcohol and surfactant, and then, hydrocarbon solvent. EFFECT: higher efficiency of method due to increased rate of acid reaction with oil-saturated rock especially under conditions of water cutting of well production. 2 cl, 1 tbl, 2 ex