METHOD FOR PUMPING FLUID INTO INJECTION WELL Russian patent published in 2004 - IPC

FIELD: oil extracting industry.

SUBSTANCE: method includes using of hydraulic pumping device of volumetric type having two operation chambers. In each of chambers resilient separator is fixed with forming of two isolated hollows of variable size for working and injected fluid, inside the chamber. Hollow for injected fluid of each working chamber of pumping device is connected through first check valve and low pressure pipeline to source of pumped fluid, and through second check valve and high-pressure pipeline - to hollow of tubing column of injection well. Hollow for working fluid of each of operating chambers is in its turn connected to output of volumetric type pump output, for feeding of working fluid, and to tank for working fluid, pressure in which is kept lower than pressure in low pressure pipeline. Hollow for working fluid of first of two operating chambers is connected to pump output for feeding of working fluid in case of reaching previously specified position by separator of second working chamber. Hollow for operating fluid of second working chamber is connected to output of pump for feeding working fluid in case of reaching of previously specified position by separator of first working chamber.

EFFECT: higher effectiveness, reliability and ecological safety of method and simplified measurement of pumped fluid volumes.

4 cl, 3 dwg