TECHNOLOGICAL COMPLEX FOR RESERVOIR RECOVERY STIMULATION Russian patent published in 2018 - IPC E21B43/25 E21B43/16 

FIELD: oil and gas industry.

SUBSTANCE: invention relates to oil and gas industry and is designed to solve problems of restoring the reservoir properties of the wellbore zone of pay beds of development oil and gas wells and involving in development hard-to-recover and unprofitable hydrocarbon reserves, and can also be used to increase the injectivity of injection wells and decolmatage of filters and filter zones of hydro-geological wells. Technological complex comprises a cavitation-wave generator run down on the washing pipes into the cased well, wellhead sealing equipment with gland seal of washing pipes, launch-and-recovery system, pumping unit, container with working agent, pressure pipe for piping of the tank and pump set with washing pipes and a discharge pipeline connecting the annulus of the well to the tank. Technological complex is equipped with a station for automatic monitoring and control of the process of stimulation of oil recovery, including an ultrasonic doppler flowmeter, equipped with a remote overhead sensor, and two pressure sensors, whose outputs through the corresponding inputs of the microprocessor-based signal acquisition and processing unit are connected to the computer's input, output of which is connected to the input of the digital display, installed at the pump unit control station. Moreover, the sensor of the flowmeter is located in the area of the delivery line, and pressure sensors are mounted in the throats of pass-through tees, one of which, by means of quick-connect couplings, is inserted into the delivery line, and the other – in the discharge pipeline. Container is equipped with a quick-detachable working agent level sensor, output of which through the additional input of the microprocessor-based signal acquisition and processing unit is connected to the computer input.

EFFECT: technical result is increased efficiency of treatment of bottom-hole area.

1 cl, 2 dwg