METHOD OF OPERATION OF PUMP-EJECTOR WELL PULSE PLANT Russian patent published in 2007 - IPC F04F5/54 

FIELD: oil producing industry.

SUBSTANCE: method is designed for hydropulse treatment of bottom-hole formation zone. Used as hydropulse device are main and preconnected cavitators connected with main cavitator. Main cavitator forms speed pulsating pressure jet, and preconnected cavitator created zone of secondary cavitation According to proposed method, working liquid is preliminarily cleaned in strainer and passed through aerator which is coupled through return valve with compressor or compressed gas reservoir (nitrogen, carbon dioxide being used as compressed gas) and its directed through swivel into tubings where it is cleaned in fine filter before delivering into hydropulse device. Draining of working liquid from well is provided through safety valve arranged on drain line. High-pressure pumps build gauge pressure, delivery and drain lines are closed by gates, then high-pressure pumps are switched and changing of pressure is monitored for instance during one hour and is recorded in loop interpreting obtained data of pressure changes. Value of skin effect is found and treatment is carried out until skin effect is zero or less than zero.

EFFECT: increased production rate of well.

3 cl, 4 dwg