SPRING CONNECTION Russian patent published in 2004 - IPC

FIELD: oil production. SUBSTANCE: invention is intended to control flow rate of fluid in system maintaining formation pressure in injection well with adjustment of flow rate of injected water. Spring connection includes body and adjustment screw. In accordance with invention body comes in the form of helical extension spring closed with blank plug on one side. Adjustment screw is mounted in space of spring for forced extension and opening of spiral clearances between turns of spring for exit of fluid or counterflush of clearances. EFFECT: simplified design, possibility of smooth increase of flow rate of fluid when clearances are clogged and possibility of counterflush of these clearances while well self-erupts. 1 dwg