Coal seam horizontal well crack pulverized coal migration test device and test method

• Main Authors: ZHANG TAO, ZHU HANYOU, LIU WENYONG, ZHANG ZHIJUN, XIONG JIANLONG, TAN YUANBING, JIANG HECAI
• Format: Patent
• Language: Chinese; English
• Published: 09.01.2024
• Subjects: EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; FIXED CONSTRUCTIONS; MINING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS

The invention belongs to the technical field of coal bed gas development engineering, and provides a coal bed horizontal well crack pulverized coal migration test device and test method. The invention discloses a visual model applied to a coal seam horizontal well crack pulverized coal migration test. A fluid injection unit injects experimental fluid into a crack space through a plurality of injection holes; the data acquisition system comprises a gas-liquid collecting and metering assembly and a plurality of cameras, and the gas-liquid collecting and metering assembly is communicated with the open end of the horizontal shaft; the pressure return unit is communicated between the horizontal shaft and the gas-liquid collecting and metering assembly, and the pressure return unit is used for controlling the pressure of the opening end of the horizontal shaft; and the control analysis unit is electrically connected with the fluid injection unit, the back pressure unit and the data acquisition system. The device an