我们在长期使用跟踪射孔的实践证明,JC691型井下磁性定位器不适应跟踪射孔的应用,主要原因是该仪器的防震性能差。为了解决防震问题,试制了 SK777型井下磁性定位器,经现场使用证明效果良好。一、原理本仪器的原理与 JC691型井下磁性定位器相同。二、结构本仪器的磁钢和线圈系靠两只铝托用螺杆紧固。整体组装形式为硬结合裸体式(详见机械图)。这样可以解决由于零件间隙造成的震坏现象。 Our long-term use of tracking perforation proved that, JC691 downhole magnetic locator does not meet the application of tracking perforating, mainly because of the poor shock resistance of the instrument. In order to solve the problem of earthquake-proof, trial production of SK777 downhole magnetic locator, the field proved to be effective. First, the principle The principle of the instrument and JC691 downhole magnetic locator the same. Second, the structure of the instrument of the magnet and coil rely on two aluminum bracket with screw fastening. The overall assembly form for the hard combination of nude style (see mechanical drawing). This will solve the problem caused by the gap between the parts of the earthquake damage.