METHOD OF WATER INFLOW SHUTOFF IN GAS WELL

• Main Authors: KUCHEROV G.G, SJUZEV O.B, BERDIN T.G, LANCHAKOV G.A, GOLOVENKO E.A
• Format: Patent
• Language: English; Russian
• Published: 20.05.2003
• Edition: 7
• 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

FIELD: gas producing industry. SUBSTANCE: in known method of water inflow shutoff in gas well including injection, into well after its shut-in at rated rate, of liquid hydrocarbons with additives of surfactant with their delivery to preset zone of well perforation interval and putting the well into operation after definite period of time, preliminarily injected into well is double-soluble surfactants in the form of modifiers and forced into formation by gas, then liquid hydrocarbons with additives of surfactants-emulsifiers and again forced by gas. Modifiers are used in the form of substances of alcohol-acetone or glycol series. Coltubings are used for delivery of reagents and provision of rated rate of reagent injection. Technical result of invention application consists in higher efficiency of shutoff by increase of adhesion of hydrocarbons (used for water inflow shutoff) to walls of pore channels of reservoir, increase of waterless phase of well operation without repair-and-shutoff worn. EFFECT: higher efficiency. 3 cl