Hole packer suitable for underground gas drainage

• Main Authors: GAO JING, CHEN YING, JIANG HUI, GAO LAISHENG, GAO YIZHENG, WANG CHANGSHUN
• Format: Patent
• Language: Chinese; English
• Published: 24.12.2021
• 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; SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, ORDRAINING IN OR OF MINES OR TUNNELS

The hole packer comprises a base, the upper surface of the base is fixedly connected with a supporting block, the upper surface of the supporting block is provided with a sliding hole, the inner wall of the sliding hole is connected with a sliding plate in a sliding mode, the inner bottom wall of th...