UNDERWATER DRILLING RIG Russian patent published in 2017 - IPC E21B7/12 B63B35/44 

FIELD: mining.

SUBSTANCE: underwater drilling rig is made in the form of submarine with compartments and inter-side space. The submarine is provided with a hoisting device and load-carrying cables placed in the inter-side space, for instance, in nose part, a base with extensible supports, a mobile rotator, drilling and core pipes, core receivers, a pump for flushing fluid supply, a mechanism for core receivers extraction from the drill pipes, a hydraulic grip of drill and string pipes comprise the drilling rig which is located in inter-side space, for instance, in nose part, and connected to the hoisting device by the load-carrying cables which serve for placing the drilling rig on the ground, including an inclined ground, and also for providing the drilling rig with the necessary types of energy and transmission of control signals, the drilling rig is provided with a hydro-acoustic warning device arranged, for example, in its upper part and serves to control the position of the drilling rig relative to the submarine, the drilling rig is also provided with a manipulator located, for example, in the stern part of the drilling rig, and serve to transfer container with the core receivers to the submarine.

EFFECT: increased efficiency of underwater drilling rig.

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