当井下发生压差等卡钻时,需要注解卡剂或油解卡。但往往因喷射钻头水眼很小或部分水眼被堵塞,施工中用大排量来提高顶替效果时,因泵压过高给施工带来困难。在这种情况下,可采用定向爆炸冲脱钻头水眼工艺,以利解卡施工的顺利进行。1982年5月,江苏油田富5井在井深2735.41米发生卡钻事故,用单泵去掉2个凡尔循 When the hole pressure differential card and other drilling, you need to note the card or oil card. But often because of the jet bit water eye is small or part of the water eye is blocked, the construction of large displacements to improve the displacement effect, due to pump pressure is too high for the construction to bring difficulties. In this case, the directional explosion may be used to drill bit the water eye craft to facilitate the smooth progress of card construction. In 1982 May, Jiangsu Oilfield Rich 5 wells in the well depth of 2735.41 meters card stuck accident, with a single pump to remove two Vernal