CLUSTER DRILLING RIG Russian patent published in 2019 - IPC E21B15/00 E21B7/02 

FIELD: machine building.

SUBSTANCE: invention relates to machine building, particularly, to cluster drilling rigs for production and exploratory drilling of oil and gas wells. Well drilling unit comprises a hoist unit with a base. Modules are connected to the base and located by the echelon. Supports with guide rails are made in form of rectangular projection of supports. Movement hydraulic cylinders are connected to the base and provided with a fastening device. Fastening device is made in the form of U-shaped element with side hooks and possibility of sliding along the guide. Stop is arranged at an angle to the guide surface. On the sides of the guides there are horizontal slots of rectangular cross-section. Grooves are made on inner side of U-shaped vertical guides, opposite to slots. Grooves and slots form rectangular cross mating holes. Vertical walls of grooves and grooves form an acute angle. Rectangular cross-section mating dies are installed in holes with possibility of limited axial movement and interaction with side surface of slots and grooves. On ends of U-shaped element there are covers, relative to which there are dies. In U-shaped element symmetrically to slots there can be made additional slots with installed rams, cover and springs.

EFFECT: technical result is simplification of design of hydraulic cylinder attachment device and expansion of its functional capabilities.

4 cl, 5 dwg