DRILLING DEVICE FOR DRILLING RIG WITH CONTINUOUS ROTATION OF DRILLING STRING AND CONTINUOUS SUPPLY OF DRILLING MUD Russian patent published in 2020 - IPC E21B7/00 E21B19/08 E21B21/08 E21B44/00 

FIELD: soil or rock drilling.

SUBSTANCE: invention relates to drilling. Drilling device for drilling rig comprises first drilling machine with upper drive, installed with possibility of vertical movement along guide, and a second drilling machine installed between the first drilling machine and the well with the possibility of vertical movement along the guide independently from the first drilling machine and equipped with a rotary table, rotary drive providing continuous rotation of the drill string, and a liquid chamber capable of providing fluid connection between the end of the drill string and the drilling fluid supply unit. Drilling rig drilling device is equipped with liquid chamber storage area with mating nipple part of docking assembly with liquid chamber fixation function on storage platform, fluid chamber displacement and installation device to second drilling machine or storage platform with function of installation and removal of liquid chamber from / to second drilling machine or storage platform. Liquid chamber is equipped with coupling part of docking assembly, and second drilling machine is equipped with nipple part of docking assembly with function of liquid chamber fixation on the second drilling machine.

EFFECT: completely automated process of drilling string assembly / disassembly without limitation on diameters of used bits is provided.

8 cl, 3 dwg