Unconventional tube type fallen object fishing spear

• Main Authors: WANG FENKANG, ZHANG ZHENSHAN, LIU ZHIHUA, XIA LIGUO, LIU GUANGYOU, ZHANG GUANGHUI, LI HUABIN
• Format: Patent
• Language: Chinese; English
• Published: 26.03.2014
• Subjects: EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; FIXED CONSTRUCTIONS; MINING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS

The utility model discloses an unconventional tube type fallen object fishing spear which comprises a connector (1), a spear rod (2), a slip (3), a dovetail key (4), a patching and adhering block (5), a guide shoe (6) and a sunk screw (7). The unconventional tube type fallen object fishing spear is characterized by being of a primary step cylinder structure, the top end of the unconventional tube type fallen object fishing spear is provided with the connector (1) provided with inner threads, the middle spear rod (2) is provided with the slip (3), and the opposite face of the slip (3) is provided with a rectangular round-head groove (A). The patching and adhering block (5) is fixed in the groove (A) through the sunk screw (7), and the tail end of the unconventional tube type fallen object fishing spear is provided with the guide shoe (6). The unconventional tube type fallen object fishing spear is novel in structure, convenient to operate, capable of fishing fallen drift size gauge tools, fallen unconventional