DRILLING ASSEMBLY USING SEALED SELF-REGULATING DEFLECTING DEVICE FOR DRILLING INCLINED WELLS Russian patent published in 2021 - IPC E21B7/06 E21B7/08 

FIELD: drilling.

SUBSTANCE: group of inventions relates to the field of drilling inclined boreholes. A drilling arrangement for drilling the borehole contains a case having an upper section and a lower section separate from the upper section, a borehole drive for rotating a drill bit relatively to a drill pipe, a shaft connected to the borehole drive and the drill bit and placed in the case, a hinge element connecting the upper section of the case and the lower section of the case with the possibility of tilting the lower section of the case relatively to the upper section of the case around the hinge element, when the drill pipe is stationary relatively to the possibility of rotation, to ensure drilling of a curved section of the borehole, when the drill bit is rotated with the drive, and the rotation of the drill pipe reduces a slope between upper and lower sections to ensure drilling of a more straight section of the borehole, a bearing section in the lower section connecting with the possibility of rotation the shaft to the lower section, wherein the shaft is placed and made with the possibility of rotation by means of the drive inside the upper section, the lower section, the bearing section and the hinge element, and at least one seal, which seals at least part of the surface of the hinge element.

EFFECT: load on components of the drilling arrangement is reduced.

14 cl, 17 dwg