LIQUID FOR OIL AND GAS WELL KILLING

FIELD: oil and gas industry, particularly process liquids adapted to kill oil, gas and gas-condensate wells when formation pressure is lower than hydrostatic one during well operation and repair. ^ SUBSTANCE: well killing liquid has hydrocarbon base, synthetic fatty acid, sodium hydroxide, waterproo...

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Bibliographic Details
Main Authors KURBANOV JA.M, KHAJRULIN A.A, LOGINOV JU.F, AFANAS'EV A.V
Format Patent
LanguageEnglish
Russian
Published 20.11.2005
Edition7
Subjects
EARTH DRILLING
EARTH DRILLING, e.g. DEEP DRILLING
FIXED CONSTRUCTIONS
MINING
OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS
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Summary:FIELD: oil and gas industry, particularly process liquids adapted to kill oil, gas and gas-condensate wells when formation pressure is lower than hydrostatic one during well operation and repair. ^ SUBSTANCE: well killing liquid has hydrocarbon base, synthetic fatty acid, sodium hydroxide, waterproofing silicone fluid agent used as additional stabilizer and silica-alumina microspheres taken as barrier lightweight filler. All above components are taken in the following amounts (% by weight): hydrocarbon base - 68-88, synthetic fatty acid - 1.2-2.1, sodium hydroxide - 0.2-0.36, waterproofing silicone fluid agent - 0.32 and barrier lightweight filler - remainder. ^ EFFECT: possibility to create hydrocarbon-based liquid exerting negligible influence on porosity and permeability of well reservoir zone, possibility of above liquid usage for killing wells characterized with low reservoir energy. ^ 1 ex, 2 tbl
Bibliography:Application Number: RU20040123916