Anti-corrosion expansion type packer

• Main Authors: WEI YONGZHOU, ZHANG ZHITAI, ZHANG XIHAO, SUN YULONG, YI JIE, ZHANG KEYU
• Format: Patent
• Language: Chinese; English
• Published: 28.12.2021
• 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

An inner pipe is sleeved with a rubber sleeve, the upper portion of a lower connector is connected with the lower portion of the inner pipe and the lower portion of the rubber sleeve, the connecting position is kept sealed, threads are arranged on the upper portion of an upper connector and the lower portion of the lower connector, sealing rings are installed on the inner wall and the outer wall of an isolation piston, and the isolation piston is installed in an isolation sleeve. The lower part of the isolation sleeve is connected with the upper part of the rubber sleeve, so that the isolation piston is sleeved on the inner pipe, the joint of the isolation sleeve and the rubber sleeve is kept sealed, and a sealing ring mounted on the inner wall of the isolation piston seals a gap between the inner wall of the isolation piston and the outer wall of the inner pipe; a sealing ring installed on the outer wall of the isolation piston seals a gap between the outer wall of the isolation piston and the inner wall of