Drill string make-up and breakout torque control system and appa

Details Drill string make-up and breakout torque control system and appa Drill string make-up and breakout torque control system and appa

1986-02-03

1988-03-08

Smith, Jerry

Boots, shoes, and leggings

81467, 173 12, 173151, 7386225, G01L 524, E21B 1900, B25B 2300

Patent

active

047302542

ABSTRACT:
A system and apparatus for the monitoring and control of torque applied during make-up and breakout of drill string components. The force applied by the cat head to the tong is measured by a hydraulic load cell and the horizontal and vertical angles between the direction of the cat head pull and the longitudinal axis of the tong are measured by angle measuring devices. Force and angle values are used for calculating the correct value of the applied make-up or breakout torque. Force angle, and torque values at shut down or breakout may be displayed, printed and plotted. During make-up, the cat head is automatically disengaged at an instant calculated to achieve a desired make-up torque at the completion of shut down.

REFERENCES:
patent: 4402052 (1983-08-01), Stone et al.
patent: 4444273 (1984-04-01), Ruby
patent: 4446745 (1984-05-01), Stone et al.
patent: 4501335 (1985-02-01), Gann
patent: 4507735 (1985-03-01), Moorehead et al.
patent: 4549431 (1985-10-01), Soeiinah
patent: 4567779 (1986-02-01), Byrne
patent: 4579024 (1986-04-01), Coyle, Sr.

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