Milling operation is torque control instrument in pit

• Main Authors: ZHANG XIONGTAO, ZHANG ANKANG, HU XIANGJUN, BAI XIAOPEI, SHAO YUAN
• Format: Patent
• Language: English
• Published: 18.11.2015
• Subjects: EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; FIXED CONSTRUCTIONS; MINING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS

The utility model provides a milling operation is torque control instrument in pit, which comprises a body, the body is equipped with the siphonozooid of through -hole for circumference, be equipped with the moment of torsion fluke with through -hole clearance fit in the through -hole, moment of torsion fluke and body axial vertical, moment of torsion fluke anchoring end is equipped with anchor tooth and counter bore with body axial direction parallel, be equipped with expanding spring in the counter bore, the expanding spring lower extreme is equipped with the clamp plate, clamp plate and body fixed connection, the tip size of the moment of torsion fluke other end is greater than through -hole top internal diameter. The utility model discloses to take place the weight on bit that deformation brought undulant because of bearing the reaction torque effectively to have avoided in the pit shaft working string, under the prerequisite that does not influence working string axial displacement, has cut down the safe risk that the tubular column was threaded off and is come with the anti - twisted strip of well head tubular column, controls the power moment of torsion of screw motor output steadily on the milling tool of anterior segment, improves that to bore the mill stable, by a wide margin improvement milling efficiency.