Well washing valve

Abstract

The invention discloses a well washing valve. The valve comprises an upper connector, a connecting sleeve, a lower connector, a rotary filtering mechanism and a one-way communicating mechanism. The rotary filtering mechanism is installed in a supporting cylinder, a filtering cover is driven by a driving motor to continuously rotate, therefore well washing fluid entering from a fluid inlet pipe isfiltered through the continuously-rotating filtering cover, large-particle impurities are blocked on the outer side of the filtering cover and placed in the supporting cylinder, and the large-particleimpurities can be filtered. The continuously-rotating filter cover is of a cylindrical structure, the periphery of the filter cover is evenly filtered, the filter cover cannot be blocked by the impurities due to continuous rotation, a self-cleaning function is achieved, and the problem of filter blockage is greatly reduced. An abutting ball valve is connected into guide cylinders on the two sidesof the lower end of a connecting block in a penetrating mode through guide rods at the upper ends of the two sides in an up-down sliding mode, and therefore the abutting ball valve is of a stable up-down sliding structure.

Description

technical field [0001] The invention relates to a well flushing valve. Background technique [0002] Well washing operation is the main method for oil wells to remove wax deposits, scale deposits and salt deposits, and it is of positive significance to increase oil well production. During well washing operations, well washing fluid enters from the wellhead and flows through the tubing and casing annulus , to clean the wax deposits and other dirt on the tubing and casing in the oil well and take them out of the well; however, the large particles of impurities in the existing well cleaning fluid will cause the ball valve to be stuck and the sealing performance of the ball valve will be poor. After a period of use, the ball valve will It cannot be closed normally, and the function of the one-way valve is lost. Because the existing ball valve has no guiding mechanism, the opening and closing structure is unstable. Contents of the invention [0003] Aiming at the shortcomings ...

AI Technical Summary

Problems solved by technology

[0002] Well washing operation is the main method for oil wells to remove wax deposits, scale deposits and salt deposits, and it is of positive significance to increase oil well production. During well washing operations, well washing fluid enters from the wellhead and flows through the tubing and casing annulus , to clean the wax deposits and other dirt on the tubing and casing in the oil well and take them out of the well; however, the large particles of impurities in the existing well cleaning fluid will cause the ball valve to be stuck and the sealing performance of the ball valve will be poor. After a period of use, the ball valve will It cannot be closed normally, and the function of the one-way valve is lost. Because the existing ball valve has no guiding mechanism, the opening and closing structure is unstable.

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