The invention discloses a
coal bed gas multilateral well
recovery control stimulation device, which comprises a main pipeline and at least two
branch pipelines, wherein the front end of the main pipeline is connected with an air exhaust device used for simulating
recovery control; the rear end of the main pipeline is communicated with the front ends of all the
branch pipelines; the rear ends of all the
branch pipelines are communicated with each other and are connected with a
hydraulic pressure input device and / or a
gas pressure input device; the main pipeline and the branch pipelines have the same structure and are
coal reservoir simulation pipelines; and a flowmeter, a pulverized
coal filtering device and a coal sample container are sequentially arranged on the coal
reservoir simulation pipeline from the front to the rear. The coal
bed gas multilateral well
recovery control
simulation device is developed under the conditions that the
pressure transmission change is complex during multi-branch horizontal well recovery, the water yield and the gas yield are instable and the recovery is difficult to control, and different coal structures, different
hydrogeology conditions, different permeability and different
reservoir pressure conditions are simulated, so that the
pressure transmission radius, the water yield, the gas yield and the pulverized coal changes during recovery are found out under different conditions.