The invention discloses a simultaneous underlying device and underlying method for drilling multi-way sleeves. The simultaneous underlying device comprises a
support surface, wherein a drilling toweris fixed to the upper end of the
support surface, a hanging
scaffold is arranged on the drilling
tower, a moving crown block is fixedly connected to the lower end of the hanging
scaffold, a pluralityof upper
pipe sleeves are arranged below the moving crown block, lower
pipe sleeves are respectively are welded to the lower ends of the plurality of upper
pipe sleeves, fixed clamping pieces are respectively arranged in positions, which are close to the upper ends, of the outer sides of the plurality of upper pipe sleeves and the lower pipe sleeves, and safety clamping pieces are respectively arranged in positions, which are located above the fixed clamping pieces, of the outer sides of the plurality of upper pipe sleeves and the lower pipe sleeves. According to the simultaneous underlying device, a bearing
chassis, the fixed clamping pieces, the safety clamping pieces and isolation
steel plates are designed, the manufacturing process and the structure are simple, a lifting device on thedrilling
tower is adopted, the isolation
steel plates are used for reinforcing among the moving crown block, the hanging
scaffold and the lower sleeves, the sleeves are sent through the fixed clampingpieces and the safety clamping pieces, the site requirement is met, the purpose that multiple ways of sleeves are arranged in a drilled hole at the same time can be achieved, and the use is convenient and reliable.