Large-drift-diameter hanger with radius-thickness ratio exceeding 8 and matched service tool

• Main Authors: ZHANG YUNPENG, LAN XITANG, CHEN XU, FU YANGYANG, ZOU JIAN, ZHANG LIPING, DAI LEIYANG, MOU MEI, JING JIYUN, GAO SHANG
• Format: Patent
• Language: Chinese; English
• Published: 05.01.2024
• 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 large-drift-diameter hanger comprises a hanger body and a service tool, the service tool comprises a service tool center pipe, one end of the service tool center pipe is connected with an upper connector, the other end of the service tool center pipe is connected with a ball seat connecting sleeve, and the service tool center pipe is sleeved with a control piston, an upper force transmission sleeve, a reverse buckling pawl spring, a releasing limiting sleeve and a lower force transmission sleeve. The ball seat connecting sleeve is connected with the ball seat, and the service tool hydraulic cylinder is arranged outside the upper connector and the control piston in a sleeving mode. The hanger comprises a hanger center pipe which is arranged outside the service tool in a sleeving mode, and a sealing barrel, an upper cone, a barrel type slip, a lower cone, a rubber barrel upper pressing cap, a rubber barrel mechanism, a rubber barrel lower pressing cap, a sealing sleeve, a rubber barrel locking ring pressing