Expansion pipe suspension type drilling liner hanger

• Main Author: XIE BAOJIANG
• Format: Patent
• Language: Chinese; English
• Published: 29.08.2012
• 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 expansion pipe suspension type drilling liner hanger includes a charging tool, wherein an expansion pipe with an expansion cone hydraulic cylinder is arranged outside the charging tool; an expansion cone hydraulic cylinder dowel is arranged between the charging tool and the expansion pipe; an expansion cone hydraulic cylinder liquid inlet is arranged in a pipe wall of the charging tool; a rubber ring is arranged on an outer wall of the expansion pipe; an expansion cone is arranged in the expansion cone hydraulic cylinder; a conical ring sliding sleeve is arranged below the expansion cone; the conical ring sliding sleeve is fixedly connected with the charging tool through a conical ring sliding sleeve dowel; a tail pipe body is sleeved at the lower part of the charging tool; an embedded conical ring is arranged between the tail pipe body and the charging tool, and a conical ring sliding sleeve sunk hole is arranged in the tail pipe body; the conical ring sliding sleeve is connected with the embedded conical