INTEGRATED BEARING SECTION AND METHOD Russian patent published in 2022 - IPC E21B4/02 

FIELD: drilling.

SUBSTANCE: invention relates to drilling equipment. Integrated bearing section comprises a spindle partially located in a body. The bearing section comprises spherical elements located between the outer surface of the spindle and the inner surface of the body. A section with a radial bearing is formed by the spherical elements located partially in grooves and interacting with the opposite surface of the flat profile. The grooves can be located in the outer surface of the spindle, the outer surface of the coupling of the spindle, the inner surface of the body, or the inner surface of the outer radial bearing. The opposite surface of the flat profile can be located on the inner surface of the outer radial bearing, the inner surface of the body, the outer surface of the spindle, or the outer surface of the coupling of the spindle. The section with a thrust bearing is made of spherical elements located partially in grooves on two opposite surfaces, such as the outer surface of the spindle or the outer surface of the coupling of the spindle, as well as the inner surface of the body or the inner surface of the outer thrust bearing.

EFFECT: increased reliability of drilling machinery.

31 cl, 11 dwg