METHOD OF SELECTIVE WATER SHUT-OFF WITHIN PRODUCING OIL WELLS

FIELD: oil and gas industry. ^ SUBSTANCE: invention refers to oil-producing industry, specifically to method of selective water shut-off within producing oils well with using gelling compositions. According to method of selective water shut-off within producing oils well by pumping-in gelling compos...

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Bibliographische Detailangaben
Hauptverfasser:	ZEL'TSER PAVEL SEMENOVICH, RADCHENKO STANISLAV SERGEEVICH, RADCHENKO FILIPP STANISLAVOVICH, JAKUBOVSKIJ SERGEJ JUR'EVICH, OZERIN ALEKSANDR SERGEEVICH, NOVAKOV IVAN ALEKSANDROVICH
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 and gas industry. ^ SUBSTANCE: invention refers to oil-producing industry, specifically to method of selective water shut-off within producing oils well with using gelling compositions. According to method of selective water shut-off within producing oils well by pumping-in gelling composition produced from mixed polyacrylamide, carbamide, aluminium salts and water. Aluminium salt is aluminium pentahydroxocloride. The specified mixture is carried out while carbamide is introduced into polymer- colloidal complex produced from mixed aqueous solution of polyacrylamide and aqueous colloidal solution of aluminium pentahydroxocloride is ratio as follows, wt %: aluminium pentahydroxocloride 3-6, polyacrylamide 0.25-0.5, carbamide 7-14, water - the rest. ^ EFFECT: higher reservoir recovery. ^ 2 dwg, 5 ex, 4 tbl