SYSTEM OF WATER INJECTION INTO INJECTORS Russian patent published in 2015 - IPC E21B43/20 

FIELD: oil and gas industry.

SUBSTANCE: system includes a group pumping station with a pump feeding water line with a pressure sensor, a water discharge line of the pump, a valve manifold, a system of distributing water lines downstream the pump with flow meters, shut-off and control valves, low-permeable injectors with return valves and high-permeable injectors. At that the system operates in a cyclic mode with cycles of pressure increase and decrease in the feeding water line. The high-permeable injectors are equipped with spring-operated flow controllers. At the water line feeding the pump there is a pressure controller bound with a bypass line with a flow controller and automatic gate. This gate is coupled functionally with a cluster controller. It ensures the collection of data from the flow meters and pressure sensor with the analysis of the performed task against pressure injected through the distributing water lines. The automatic gate is made so that at the r signal of the controller it provides the water flow through the bypass line in order to compensate water injection to the low-permeable injectors at the total deficiency in the injection volume to them.

EFFECT: excluding deficiency in the injection volume to the low-permeable injectors and pressure balancing in feeding water lines.

1 dwg, 1 tbl