METHOD FOR CONTROLLING FLUID INJECTION RATE IN DEPOSITS AND ADJUSTABLE FLOW REGULATOR

摘要

The invention relates to a method for controlling the injection rate of water or other fluids in underground oil deposits, and to an adjustable flow regulator to be preferably used to implement the method. The method essentially consists in adding small and controlled quantities of a gas to the water, reducing the speed of sound, thus allowing a critical outflow through the flow regulator, in particular venturi-equipped flow regulators. The flow regulator has a central body in a conical housing that allows the area open to the outflow, and hence the injection rate, to be adjusted when an actuator is activated. Used in conjunction with the method, this flow regulator increases the advantages of the latter, including the fact that a wide range of injection rates can thus be assured by a single regulator.