DRILLING RIG Russian patent published in 1994 - IPC

FIELD: drilling equipment. SUBSTANCE: drilling rig includes drum drive of power-carrying hose connected to submersible impact machine which drilling tool is manufactured in the form of string of drill pipes. Packer is anchored in upper part of string. Drill bit is installed in lower part for transfer of torque and axial movement, it interacts with impact machine connected to core container mounted inside drill pipe. Flexible low cylinder with freely moving outlet and inlet branch pipes is anchored in drill pipe with the aid of radial cams. Inlet branch pipe is joined to power-carrying hose. EFFECT: expanded technological capabilities, improved quality of sampling. 4 dwg