Deep well accident drill bit fishing device

• Main Authors: LI HONGQIANG, ZHUO JIMEI, LI QINGBO, LAI GUOCHEN, ZHANG HAILONG, LIANG JINHAI, HU LIANGYING, HUANG WEI, GAN ZONGXIANG, ZHU CHANGQIAN
• Format: Patent
• Language: Chinese; English
• Published: 07.06.2022
• 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 relates to the technical field of grabbing and fishing tools, in particular to a deep well accident drill bit fishing device which comprises a shell, a control table, a switch, a first supporting plate, a second supporting plate, a sleeve, an abutting column, a lead screw sliding table, a plurality of magnetic attraction assemblies, a plurality of clamping jaws and a third supporting plate. Under the abutting of the drill bit, the abutting column continues to ascend, when the top of the abutting column triggers the switch and the lead screw sliding table drive the sleeve to ascend, the magnetic attraction assembly ascends along with the sleeve, when the attraction force of the magnetic attraction assembly to the clamping jaw is insufficient, the clamping jaw falls, part of the clamping jaw falls into the through hole of the drill bit, and at the moment, the pulling-up device and the clamping jaw are clamped with the through hole of the drill bit; compared with manual fishing, the drill bit f