可退式卡瓦打捞矛是从落鱼内孔进行打捞的一种工具，它主要用于打捞钻杆、油管、套管等。它可以与内割刀、震击器等工具配合使用。  　　　　　　　　　　　　钻井用打捞矛技术参数  型号芯轴外径(mm)落鱼尺寸(mm)引锥直径(mm)接头螺纹许用载荷(KN)LM-T608650-5448NC26(2-3/8IF)270LM-T739555-6252NC26(2-3/8IF)380LM-T8910562-7858NC31(3-1/2IF)650LM-T10212784-10275NC38(3-1/2IF)800LM-T11412792-10285NC38(3-1/2IF)1000LM-T127159100-11595NC50(4-1/2IF)1300LM-T140159112-140102NC50(4-1/2IF)1500LM-T168159140-156135NC50(4-1/2IF)2200LM-T178159150-165144NC50(4-1/2IF)2200LM-T194159168-180160NC50(4-1/2IF)2300LM-T219159190-206180NC50(4-1/2IF)2300LM-T245203215-2302106-5/8REG2500LM-T273203240-2602106-5/8REG2500LM-T340203300-3252106-5/8REG2500   　　　　　　　　　　　　修井用打捞矛技术参数  型号芯轴外径(mm)落鱼尺寸(mm)引锥直径(mm)接头螺纹许用载荷(KN)LM-T488640-4538NC26/ 1, 900TBG200LM-T608646-5144NC26,2 3/8TBG270LM-T739554-62522-7/8REG ,2-7/8TBG340LM-T899566-78622-7/8REG ,2-7/8TBG650LM-T10210585-10080NC31,3-1/2TBG800LM-T11410592-10385NC31(2-7/8IF)900LM-T127105101-11595NC31(2-7/8IF)1000LM-T140105117-128110NC31(2-7/8IF)1200LM-T168127140-156130NC38(3-1/2IF)2000LM-T178127149-164140NC38(3-1/2IF)2000LM-T194127168-180160NC38(3-1/2IF)2300LM-T219168190-206180NC50(4-1/2IF)2300