Reversible reinforcement device for underground workover treatment of oil gas well

• Main Authors: MAO XIAONAN, ZHU YINGHUI, HAN BO, YAN LILI, LIU JIANXIN, LIU YUGUO, WEI WEI
• Format: Patent
• Language: Chinese; English
• Published: 18.04.2023
• 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 reversible boosting device for underground workover treatment of an oil gas well, which comprises more than one pull-up hydraulic cylinder and a press-down hydraulic cylinder, the outside of a central control pipe is connected with more than one pull-up hydraulic cylinder, and a balance liquid inlet check valve I is arranged at the lower end of the central control pipe; a pull-up hydraulic cylinder outside the central control pipe is hung on a hanging step on the outer wall of the central control pipe through a central pipe connector pressing cap and a central pipe connector; the lower part of the central control pipe is connected with more than one pressing hydraulic cylinder through a conversion joint; a balance liquid inlet check valve II is arranged below the pressing hydraulic cylinder at the lowest end; the workover tool joint is connected below the pressing hydraulic cylinder at the lowermost end; and the pull-up hydraulic cylinder connected to the lowermost part outside the c