Method for measuring gas pressure of close-distance seam group simultaneously

    公开(公告)号:US11959379B2

    公开(公告)日:2024-04-16

    申请号:US18505882

    申请日:2023-11-09

    IPC分类号: E21B47/06 C04B28/00 E21F17/18

    CPC分类号: E21B47/06 C04B28/00 E21F17/18

    摘要: Disclosed is a method for measuring gas pressure of a close-distance seam group simultaneously, including the following steps: constructing a pressure-measuring drill hole inclined downwards; lowering a first seam piezometer tube, lowering a baffle and a polyurethane blocking material after a tube head reaching a lowermost seam; and installing a gas pressure gauge; lowering a second seam piezometer tube, lowering the baffle and the polyurethane blocking material after the tube head reaching a second layer of seam; and installing the gas pressure gauge; lowering a nth seam piezometer tube, lowering the baffle and the polyurethane blocking material after the tube head reaching a nth layer of seam; and installing the gas pressure gauge; injecting a high-water and quick-solidifying material into the drill hole; and connecting the gas pressure gauges through optical fibers, and connecting the gas pressure gauges with a ground control system.