Verification method for coal seam floor water disaster exploration and injection engineering evaluation and treatment effect

• Main Authors: YANG ZHI, ZHU JINGZHONG, WANG QIQING, LI XIAOQIN, LI LIANGNING, LI WENPING
• Format: Patent
• Language: Chinese; English
• Published: 31.05.2024
• 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 discloses a verification method for coal seam floor water disaster exploration and injection engineering evaluation and treatment effect, and relates to the field of coal seam floor limestone water disaster exploration, grouting and water disaster treatment effect evaluation. According to the method, the multi-branch horizontal directional drilling construction quality is evaluated according to the sleeve quality, the pipe fixing quality, drilling fluid logging, the actual drilling hole depth, the plane track and the target layer following rate index; after the drilling engineering quality is evaluated to be qualified, a grouting stage can be entered, and the grouting engineering quality is evaluated according to the indexes of grouting pressure, unit grouting dosage, grouting end pump quantity and grout diffusion radius. And after the evaluation of the exploration and injection engineering is qualified, carrying out qualitative and quantitative evaluation on the limestone water disaster treatme