套管捞矛是通过抓紧落鱼内径而把落鱼从井内提拉或震击出来的一种打捞工具,它尤其适用于海上套管打捞作业。msn:xiaoyouloveyouhotmail.comthe casing spear is used to engage a fish internally in order that it may be pulled or jarred from the hole. it is especially designed for marine operations.
