METHOD OF OPERATION OF OIL-GAS WELLS Russian patent published in 2000 - IPC

FIELD: development of oil and gas deposits whose well products contain considerable amounts of high-melting paraffins. SUBSTANCE: method includes maintenance of temperature of oil field equipment, for instance, tubings which exceeds temperature of accumulation of paraffins and hydrate by internal energy of compressed gas. Gas is injected into well with temperature exceeding the temperature of inversion of Joule- Thomson effect. Gas is used in form of helium which is injected into well by closed cycle and without its preliminary heating. In so doing, gas injected into well is throttled. EFFECT: higher efficiency of operation of wells with high-paraffin oil due to prevention of paraffin-hydrate accumulation in process of oil production, reduced energy consumption in prevention of paraffin-hydrate accumulation in oil and gas wells.