ROTARY-CONTROLLED SYSTEM FOR DRILLING WELLS WITH A CLOSED DECISION CYCLE Russian patent published in 2022 - IPC E21B7/06 E21B44/00 

FIELD: mining industry.

SUBSTANCE: rotary-controlled system (RCS) for drilling wells with a closed decision-making cycle is designed for drilling mainly directional and horizontal sections of wells. The RCS includes a surface drive, a diverter with a rotating spindle and housing and with a non-rotating geostationary housing mounted in the bottom of the drill string layout (BDSL), a diverter centralizer, a chisel located below the diverter, a downhole motor mounted above the diverter, downhole and surface processors interconnected by a communication channel, blocks of surface and downhole sensors of the BDSL orientation system and registration and control of drilling parameters and physical properties of surrounding rocks, deflector dies, mounted on a geostationary housing with the possibility of exiting in the radial direction to rest against the wall of the borehole in order to create a deflecting force, an emitter tag and a sensor receiver of a system for determining the spatial position of the dies, a hydraulic drive of the deflector dies, including hydraulic distribution channels, pistons and high-pressure oil pumps with an electric drive, controlled by a downhole processor via a hydraulic drive controller, internal and external sealing elements, placed in an annular slot between a non-rotating geostationary housing and a rotating spindle for sealing hydraulic distribution channels with each other and the external space of the annular slot. The diverter is equipped with a hydraulic compensator in the form of an oil cavity made in a rotating spindle and isolated from the annular space by means of a movable float and hydraulically connected to the external space of the annular slot. In the rotating spindle and the deflector housing, an axial discharge channel is made, hydraulically connecting the intake of oil pumps with the external space of the annular slot by means of an oil cavity of the hydraulic booster, made in the rotating spindle and separated by a movable float of the hydraulic booster. The sealed cavity in the annular slot between the sealed hydraulic distribution channels is hydraulically connected to the axial discharge channel by means of radial channels made in the rotating spindle, and the supply and discharge of the working fluid to the diverter dies is carried out through one hydraulic distribution channel.

EFFECT: proposed invention will make it possible to drill directional and horizontal wells in a fully automatic mode, with a closed decision cycle, and practically eliminate the influence of the human factor in the form of erroneous actions of personnel on the drilling process.

2 cl, 5 dwg