Put in unlocking device

• Main Authors: YAN TAO, WU DONGSHENG, ZHOU XUCHENG, LIU AIGUO, CHEN TAO, HE YIHUI, ZHANG YAOXIAN, QIN XINDE
• Format: Patent
• Language: Chinese; English
• Published: 27.03.2018
• 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 a well drilling fishing tool technical field is a put in unlocking device, including unlocking device body, locking ring and screw, the unlocking device body is the cylindric, annular in the lower part inboard of unlocking device body is equipped with down, and the lower extreme inboard of unlocking device body is equipped with the lower frustum hole that young end opening is big, and lower inner ring trench just has the interval under in between the two above the frustum hole, following its axis direction on the lateral wall of unlocking device body and being equipped with the open slot, there is at least one outer annular in the unlocking device body outside from top to bottom interval distribution, and every outer loop inslot all has the locking ring that can seal the open slot of position through screw fixed mounting. The utility model discloses can solve under the circumstances about not pulling out of hole and to throw in change and the maintenance that solves the instrument