Method of removing sanding in pipe string and use of removing block apparatus thereof

The invention discloses a method for eliminating the sand blocking in pipe and the device. The method includes at least one group of block eliminating device made up of vibrator, vibration gearing antenna is put into the sand blocked pipe; supplies energy to the vibrator to work, and applies pulling force to the pipe, thus the pipe can be pulled out, completes the work. The device includes a vibration shell with a cone surface wall, there has a pushing hydraulic cylinder under the cone outer wall, the position correspondent to the cone external wall has vibration reducing antenna, drives the hydraulic cylinder to be connected with the vibration reducing antenna, there has a ventilation pore at position correspondent to the pushing hydraulic cylinder; in the shell, there has liquid rotary fins, eccentric rotary wheel, the second centre spindle, there also has the first centre spindle in the centre of the liquid rotary fin. 本发明公开了一种解除管柱砂卡的方法及使用的解卡装置，旨在提供一种能简化砂卡井内管柱起出作业的过程，提高作业效率，而且作业风险小的解除管柱砂卡的方法及使用的解卡装置。本发明的方法包括下述步骤：在无异物的砂卡管柱内放入至少一组由振动器、传振触角组成的解卡装置；给振动器提供能量使振动器工作，同时给砂卡管柱施加上提力，砂卡管柱被起出，完成作业。本发明的解卡装置包括具有锥面外壁的振动器外壳，在锥面外壁的下方有推动液缸，与锥面外壁相应的位置有减振触角，推动液缸与减振触角连接，在与推动液缸相应的位置有连通孔；振动器外壳内依次有液流旋翼、偏心旋轮、第二中心轴，在液流旋翼的中心位置有第一中心轴。