Oilfield oil production downhole reaming auxiliary device

• Main Authors: CAO GUODONG, WEI YINI, LU YAO, LI YEFENG, GAO KUN, GOU FENGKAI, ZHANG LILI, JIA PEIJING
• Format: Patent
• Language: Chinese; English
• Published: 04.12.2020
• 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 utility model relates to the technical field of oilfield drilling equipment, in particular to an oilfield oil production downhole reaming auxiliary device which comprises a drill bit and a connecting piece, the bottom end of the drill bit is conical, a connecting hole is formed in the center of the top of the connecting piece, the lower end of the drill bit is sleeved with a circular ring, andfirst connecting rods are hinged to the two sides of the bottom of the drill bit. One end of each first connecting rod is hinged to a second connecting rod, a first scraping piece is fixedly installed at the upper end of one side of each first connecting rod, a second scraping piece is fixedly installed at the lower end of one side of each second connecting rod, and a plurality of threaded holesdistributed at equal intervals up and down are formed in the drill bit. The positions of the first scraping blade and the second scraping blade are adjusted by moving the circular ring, the sliding groove, the sliding block, t