METHOD OF TREATMENT OF BOTTOM-HOLES OF WELLS PRODUCING HEAVY OILS AND NATIVE BITUMENS

oil producing industry industry, particularly, methods of treatment of bottom-hole zones of producing wells whose production rate drops due to colmatage with clay particles and accumulations of asphaltene-resin-paraffin components. SUBSTANCE: method includes injection of hydrocarbon fluid, forcing o...

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Bibliographic Details
Main Authors SITNIKOV N.N, STARSHOV M.I, KRUPIN S.V
Format Patent
LanguageEnglish
Published 10.05.2001
Edition7
Subjects
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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Summary:oil producing industry industry, particularly, methods of treatment of bottom-hole zones of producing wells whose production rate drops due to colmatage with clay particles and accumulations of asphaltene-resin-paraffin components. SUBSTANCE: method includes injection of hydrocarbon fluid, forcing of this fluid into formation, leaving it in bottom-hole zone to stand for some time, and withdrawal of dissolved products. Hydrocarbon fluid is used in the form of fraction of alpha olefins treated with hydrogen peroxide in mole ratio of 0.1-0.5:1.0. Fraction of alpha-olefins has carbon molecular formula C6-C20 and with distillation temperature of 70-300 C. EFFECT: increased permeability of treated interval of formation complicated with asphaltene-resin-paraffin accumulations. 1 tbl, 1 ex
Bibliography:Application Number: RU19990106573