SYSTEM AND METHOD OF CORE BORING WITH DETACHABLE CORE BARREL Russian patent published in 2013 - IPC E21B7/12 

FIELD: mining.

SUBSTANCE: device and method of core boring, core sampling and testing of samples and measurement at the bottom of sea and water reservoirs, including a vertically moving and a horizontally stationary cross beam, a hoist with a rope wound on it, fixed on the cross beam, and a spindle spinner installed on the cross beam, a spindle made with a channel in it and driven with the spindle spinner, and a jar head having one end connected with the rope and the other end stretching via the channel in the spindle for attachment to the boring tool of the boring string and detachment from it. The spindle, the rope and the boring string together form a common central axial line during attachment of the jar head to the boring tool, detachment from it and during boring.

EFFECT: invention provides for boring, sampling and testing under water at sea bottom and bottom of water reservoirs.

18 cl, 55 dwg