Reducing adjusting structure of reamer while drilling and reamer while drilling

• Main Authors: PENG SONG, WANG JUN, HE KUN, LUO YONG, HOU FUXIANG, WU QIANLI, XU BINGGUI, ZHANG YANPING, FENG LAI, LIANG GUOHONG, CAO CHUAN
• Format: Patent
• Language: Chinese; English
• Published: 09.04.2024
• 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 invention relates to the technical field of reamer, in particular to a reducing adjusting structure of a reamer while drilling and the reamer while drilling. An opening groove is formed in the pipe wall of a mounting pipe of the structure in the circumferential direction; blade assemblies in one-to-one correspondence with the opening grooves in position are mounted in the mounting pipe; a connecting rod is arranged in the mounting pipe in the axial direction, at least one end of the connecting rod is sleeved with an extrusion sleeve, and the extrusion sleeve can slide along the connecting rod and be positioned; one end of the extrusion sleeve is a large-diameter end, the other end of the extrusion sleeve is a small-diameter end, and the diameter of the extrusion sleeve is gradually increased from the small-diameter end to the large-diameter end; the small-diameter end is close to the blade component; the side wall of the extrusion sleeve abuts against the blade assembly. And the blade components can move