大港油田第一采油指挥部制成一种油、水井井下测试仪器防掉卡(见图)。1982年2月在7-26井井深500米处作剪断钢丝的试验,起出油管后证实防掉卡正好卡在500米油管位置。这种防掉卡在现场使用了100多井次,在井下未发生任何遇阻现象,起到了防止井下测试仪器掉入井内的作用,确保了安全生产。 Dagang Oilfield, the first oil production headquarters made of an oil, water wells down test equipment anti-card (see photo). In 1982 February in 7-26 well depth of 500 meters at the cut steel wire test, out of the tubing confirmed that the anti-drop card just stuck in the 500-meter tubing position. This anti-drop card used in the field more than 100 times, did not happen in the underground encounter any phenomenon, played to prevent downhole test equipment fall into the role of the well to ensure safe production.