Self-locking anti-spitting bridge-type concentric adjustable water distributor for layered water injection wells

Abstract

The invention discloses a self-locking reverse-spitting-prevention bridge-type concentric adjustable water regulator for a separate-layer injection well. The self-locking reverse-spitting-prevention bridge-type concentric adjustable water regulator comprises a fixed valve of which the upper connector is connected through threads and a body; the fixed valve is connected with a sliding valve sleeve in a dynamic sealing manner; a big connection sleeve is connected with the body; a big compressed spring is arranged between the sliding valve sleeve and the big connection sleeve; a lower connector is connected with the lower part of the big connection sleeve; a rotation-prevention sleeve is connected with the inner periphery of the lower connector; a rotary core is arranged on the inner periphery of the body; a positioning sleeve is connected with the rotary core; the lower part of the rotary core is connected with the body in a sliding manner; a baffle sleeve is arranged on the inner periphery of the middle and lower part of the body; a small compressed spring is arranged between a fixed threaded sleeve and the baffle sleeve; a measurement and adjustment instrument clamping groove is formed in the upper end part of the positioning sleeve; a semicircular positioning groove is formed in the outer periphery of the lower part of the measurement and adjustment instrument clamping groove, and is matched with a positioning threaded plug which is correspondingly arranged on the upper connector for positioning; a water outlet is formed in the middle part of the body; a water nozzle is arranged on the part, corresponding to the water outlet of the body of the water regulator, of the middle part of the rotary core; and the outlet of the water outlet is communicated with the lower end of the sliding valve sleeve.

Description

technical field [0001] The invention relates to the field of oil field technology development, in particular to a self-locking anti-spitting bridge-type concentric adjustable water distributor for layered water injection wells. Background technique [0002] The self-locking anti-reverse bridge-type concentric adjustable water distributor for layered water injection wells is a downhole water distribution tool used for layered water injection of oilfield water injection wells. In the middle and later stages of oilfield development, due to the formation of formations after formation oil is recovered, the pressure decreases, the liquid level will become lower and lower, and the pumping depth will become deeper and deeper. When reaching a certain depth, some oilfields need to be converted into water injection wells. Raise the liquid level of the pumping well by injecting water, drive the oil to the well with water, and then pump it out. The thickness and volume of each oil layer...

AI Technical Summary

Problems solved by technology

At present, there are many kinds of layered water distribution tools, but due to their single function, the construction volume is large, the cost is increased, and the labor intensity is also increased.

In addition, the water distributor is affected by the fluctuation of water injection pressure in the underground, so that the water nozzle of the water distributor will be displaced by the pressure fluctuation when the water distributor is working, resulting in a change in the injection volume, which affects the work design requirements of layered water injection, and cannot meet the specified requirements. index

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