NON-CONTACT DOWNHOLE DRILLING TEMPERATURE MEASUREMENT DEVICE Russian patent published in 2008 - IPC E21B47/06 B24B49/12 

FIELD: mining.

SUBSTANCE: invention refers to the mining industry, namely to the drilling equipment, and is designed for research of optimal drilling mode parameters based on the temperature rise criteria in the contact zone of the drilling tool and the rock. The device includes the core holder with a rock sample as the core installed at the spindle of the core drill, the thermal frictional tool, the optic cable laid along the gallery hole of the tool frame with its end at the friction tool end plane, connected in series with the receiver-amplifier and the registering device, the core tube with a nozzle for water input, the anti-spatter protection cover, and the water collector with water drain. There is a gallery hole connecting the internal and the external cavities of the tool in the thermal friction tool frame. This allows to cool the optic cable with water coming to the core tube, which reduces the additional IR-radiation being a hindrance to the main signal.

EFFECT: setting the optimal drilling mode parameters by the contact zone temperature of the tool and the rock, as measured on the testing bench.

2 cl, 2 dwg