Water nozzle for water injection well in oil field

Abstract

The embodiment of the invention provides a water nozzle for a water injection well in an oil field. The water nozzle for the water injection well in the oil field comprises an opening determination device, an opening adjustment device, a piston rod and a valve, wherein the opening determination device is used for automatically collecting the current formation pressure data according to a preset period, and determining the current opening, corresponding to the formation pressure data, of the valve; the opening adjustment device is connected with the opening determination device and the piston rod, and is used for pushing the piston rod to move forwards or backwards according to the determined current opening; the valve is fixed on the piston rod, and is used for moving forwards or backwards along with the piston rod, so as to reach the determined current opening. With the adoption of the scheme, the formation pressure can be automatically collected according to the period, and the opening of the valve can be adjusted according to the formation pressure, so that the water injection effect is improved, the injected water volume of the stratum where a blanking plug is positioned is guaranteed, and the amount of labor of manual measurement and adjustment is reduced.

Description

technical field [0001] The invention relates to the technical field of oilfield water injection, in particular to a nozzle used for oilfield water injection wells. Background technique [0002] At present, the plug used for water injection wells in oil fields is a facility to adjust the opening of the plug valve through a measuring and adjusting instrument. After each adjustment, the opening of the valve remains unchanged, but the pressure of the formation is a changing value. If the formation pressure changes, the wellhead water injection pressure does not change, and the opening of the plug valve does not change, the water injection volume cannot meet the water injection process requirements, thereby affecting the oil recovery efficiency. Contents of the invention [0003] An embodiment of the present invention provides a water nozzle used for water injection wells in oil fields, which can automatically detect and adjust the opening of the valve on a regular basis, impro...

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Problems solved by technology

[0002] At present, the plug used for water injection wells in oil fields is a facility to adjust the opening of the plug valve through a measuring and adjusting instrument. After each adjustment, the opening of the valve remains unchanged, but the pressure of the formation is a changing value. If the formation pressure changes, the wellhead water injection pressure does not change, and the opening of the plug valve does not change, the water injection volume cannot meet the water injection process requirements, thereby affecting oil recovery efficiency

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