The invention relates to a slide bearing joint in a well with an adjustable
wellhead, belonging to the field of oil and gas drilling equipment. The slide bearing joint in a well with an adjustable
wellhead mainly comprises an upper rotating shaft, a shell, an upper sealing ring, a slide sleeve, a lower sealing ring, a thrust sleeve, a spring, a lower rotating shaft, a self-lubricating layer, an upper spring
dowel, a lower spring
dowel, a slide bearing inner ring, a slide bearing outer ring, a location baffle and a locking bolt. A fluid guide hole is arranged on the lower part of the upper rotating shaft, and the fluid guide hole guides a
drilling fluid which flows through the upper rotating shaft in a gap between the upper rotating shaft and the sleeve; the slide sleeve is a step-shaped sleeve, an upper sealing groove and a lower sealing groove are arranged in the inner hole of the slide sleeve, and a gap is formed between the inner
diameter of the slide sleeve and the outer
diameter of the upper rotating shaft; and the upper spring
dowel is used for locating the slide bearing outer ring before adjusting the bearing, and the lower spring dowel is used for locating the slide bearing outer ring after adjusting the bearing. The slide bearing joint in a well with an adjustable
wellhead disclosed by the invention reduces the time used for adjusting the bearing joint or replacing the bearing joint, increases the continuous working time of the bearing in the well, and increases the working efficiency.