Packer grading deblocking device

• Main Authors: XI LEI, GAO PAN, JIANG MAN, GUO ZHILONG, CAO ZONGBO, ZHANG YONGFENG, SUN CHENXIANG, GONG SHENG, LU BIN, TANG CHAOHONG, GUO RUIFENG, SU HAO, TANG YONGXIANG, CHEN ZHIHANG, HE FUGUI
• Format: Patent
• Language: Chinese; English
• Published: 15.01.2021
• 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 packer staged deblocking device which comprises a deblocking outer cylinder, a cone and N anchoring slips are arranged on the inner side of the deblocking outer cylinder, the deblocking outer cylinder is provided with N staged release grooves with different lengths, and one ends of the anchoring slips of the N anchoring slips are correspondingly installed in the N staged release grooves respectively. When the packer conducts deblocking, deblocking tension is transmitted to the deblocking outer barrel through the lifting completion pipe column, the deblocking outer barrel moves upwards to drive the N graded release grooves to sequentially move upwards, and different anchoring slips are released in a graded mode. Compared with an existing packer deblocking device, graded deblocking can be achieved, the deblocking force of the packer is effectively reduced, and meanwhile the packer deblocking device has the advantages of being simple in structure, low in cost, reliable in deblockin