THERMAL-ELECTRIC COMPLEX FOR INCREASING OIL RECOVERY OF RESERVOIR Russian patent published in 2010 - IPC E21B43/24 E21B36/04 

FIELD: oil and gas production.

SUBSTANCE: invention may be used for thermal treatment of reservoir of high-viscous oil, restoration of hydraulic connection of reservoir and well, increasing oil recovery of reservoir and wells debit, and also restoration of noncommercial wells operation for oil, natural gas, for fresh, mineral and thermal waters. Complex action is based on heating of liquid in isolated section of well at the level of reservoir. For this purpose complex is equipped with sucker-rod pump arranged in lower part of lifting pipe, and is connected to drive at wellhead, distributor filled with dielectric fluid and adapter, by means of which lower end part of sucker-rod pump case is connected to tight heater filled with current-conducting liquid via heat-resistant packer installed between distributor case and sucker-rod pump. At the same time disk perforated electrodes are rigidly connected to central tubular current conductor. Heat resistant insulators arranged between electrodes are made as tubular and cylindrical and are located on surface of central tubular current conductor and on internal surface of tight heater case. Besides insulators have holes made in zones of interelectrode intervals.

EFFECT: improved oil recovery of reservoir as a result of continuous transfer of heat energy into reservoir with simultaneous pumping of oil.

2 dwg