Sealing and shunting suspension device for coring

• Main Authors: CHEN SENQIANG, CONKLEY, ZHU YUFENG, LI LANG, WANG XINDONG, LI MING, ZHANG WUTAO, XIE ZHENGSEN
• Format: Patent
• Language: Chinese; English
• Published: 28.02.2023
• 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 relates to the technical field of drilling and coring tools, in particular to a sealing and shunting suspension device for coring, which comprises an upper joint, a limiting joint, an inner cylinder connecting shaft and a sealing plug, the inner side of the lower part of the upper joint is fixedly connected with the limiting joint, and the inner cylinder connecting shaft is hermetically and slidably mounted in the limiting joint; a sealing plug is fixedly connected to the position, corresponding to the upper portion of the inner cylinder connecting shaft, of the inner wall of the inner ring groove, a closed cavity is defined by the limiting connector, the inner cylinder connecting shaft and the sealing plug, and a bearing is installed between the inner wall of the inner ring groove and the outer side wall of the inner cylinder connecting shaft. And a circulation which is parallel to the axial direction of the limiting joint and is communicated with the interior of the upper joint penetrates thro