METHOD FOR HYDRATE, GAS-HYDRATE AND HYDRATE-HYDROCARBON DEPOSIT LIQUIDATION

FIELD: oil and gas industry, particularly to remove hydrate, gas-hydrate and hydrate-hydrocarbon deposits generated during oil transportation and production. ^ SUBSTANCE: method involves localizing deposit zones in well section; estimating current wellhead pressure and yield; applying acoustic actio...

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Bibliographische Detailangaben
Hauptverfasser:	VLADIMIROV AL'BERT IL'ICH, JUSUPOV IL'DAR FARITOVICH, MEL'NIKOV VJACHESLAV BORISOVICH, PIMENOV JURIJ GEORGIEVICH, USHAKOV SERGEJ VALERIEVICH, KITAEV SERGEJ MIKHAJLOVICH, POGODAEV ALEKSANDR VALENTINOVICH
Format:	Patent
Sprache:	eng ; rus
Schlagworte:	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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Beschreibung
Zusammenfassung:	FIELD: oil and gas industry, particularly to remove hydrate, gas-hydrate and hydrate-hydrocarbon deposits generated during oil transportation and production. ^ SUBSTANCE: method involves localizing deposit zones in well section; estimating current wellhead pressure and yield; applying acoustic action to deposits by downhole acoustic emitter, which generates ultrasonic waves with 15-100 kHz frequency and 0.2-5 W/cm2 intensity; lowering emitter to next deposit levels as deposits are removed to recover initial values of wellhead pressure and yield. In marginal wells ultrasonic action is carried out directly after produced fluid removal. In stopped wells produced fluid is injected simultaneously with emitter installation or fluid mixed with methanol with ratio of 1:0.005-1:500 is injected to level, where liquid to be injected flows out of well head. ^ EFFECT: increased efficiency of deposit removal, decreased power inputs and time. ^ 2 cl, 4 ex