Adjustable plug capable of simultaneously controlling one water nozzle to be opened and the other closed

The invention discloses an adjustable plug capable of simultaneously controlling one water nozzle to be opened and the other closed, and relates to the technical field of oil fields, in particular to a water division plug of a packing water distributor in the field of oil field separated layer water injection, namely, a water division tool for simultaneous measurement and allocation on water amounts of two layers. The adjustable plug capable of simultaneously controlling one water nozzle to be opened and the other closed comprises a fishing head, an upper outer shell, a middle outer shell, a lower outer shell and a lower connector, wherein the fishing head, the upper outer shell, the middle outer shell, the lower outer shell and the lower connector are mutually and sequentially connected in the axial direction. An upper water outlet is formed in the side wall of the upper outer shell, an upper water inlet is formed in the side wall of the middle outer shell, a lower water outlet is formed in the side wall of the lower outer shell, and a lower water inlet is formed in the lower connector. The adjustable plug capable of simultaneously controlling one water nozzle to be opened and the other closed can solve the problem of water distribution difficultly caused by large difference of water absorbing capacities of two adjacent oil layers and the problems of allocation difficulty of the water volumes of multiple injection allocation equant layers and the like.