Self-adaptive pressure control type plugging tool

• Main Authors: YAO HONGTIAN, LI DONGLEI, ZHANG ZHILONG, HAO WEIDONG, ZUO LINA
• Format: Patent
• Language: Chinese; English
• Published: 07.06.2024
• 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 invention discloses a self-adaptive pressure control type plugging tool. The problem that an existing shallow layer outleakage production well needs to be overworked when outleakage occurs is mainly solved. The inner side of the bottom of the upper connector (1) is connected with an inner center pipe (3), the outer portion of the inner center pipe (3) is connected with an outer center pipe (4), a rubber barrel (7) is arranged outside the outer center pipe (4), an upper round hole (15) and a lower round hole (16) are formed in the side wall of the outer center pipe (4), the upper round hole (15) is located in the upper portion of the rubber barrel (7), and the lower round hole (16) corresponds to the middle of the rubber barrel (7). A setting piston (9) is arranged at the bottom of the rubber barrel (7), a lower connector (14) is arranged at the bottom of the setting piston (9), a connecting sleeve (13) is arranged outside the lower connector (14), and a liquid inlet hole (17) is formed in the position, co