Power tong torque control

Title: Power tong torque control

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Abstract

Torque controlled powered pipe tongs, are described the apparatus comprises: (a) a power tong powered by a fluid motor; (b) a fluid power source connected to the motor; (c) a force conducting element attached to the power tong, situated to oppose reaction torque from the tongs when torque is applied to pipe; (d) force sensing means operatively associated with the force conducting element situated to sense at least part of the force experienced by the force conducting element, arranged to produce a pressure signal proportional to force sensed; and (e) a fluid by-pass valve, adjustably biased toward a closed position, responsive to the signal to tend to move toward an open position, the by-pass valve connected between the fluid power source and the motor.

Inventors:: Buck, D.A.; James, R.N.

Publication Date:: Tue Oct 20 00:00:00 EDT 1987

OSTI Identifier:: 5998588

Patent Number(s):: US 4700787

Assignee:: NOV; NOV-88-086405; EDB-88-007519

Resource Type:: Patent

Resource Relation:: Patent File Date: Filed date 3 Oct 1985

Country of Publication:: United States

Language:: English

Subject:: 02 PETROLEUM; 03 NATURAL GAS; DRILL PIPES; MATERIALS HANDLING EQUIPMENT; CONTROL; DESIGN; ELECTRIC MOTORS; HYDRAULICS; NATURAL GAS WELLS; OIL WELLS; OPERATION; TORQUE; VALVES; CONTROL EQUIPMENT; DRILLING EQUIPMENT; EQUIPMENT; FLOW REGULATORS; FLUID MECHANICS; MECHANICS; MOTORS; PIPES; WELLS; 020300* - Petroleum- Drilling & Production; 030300 - Natural Gas- Drilling, Production, & Processing

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                    Buck, D.A., and James, R.N. Power tong torque control.  United States: N. p., 1987. 
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                    Buck, D.A., & James, R.N. Power tong torque control.  United States.

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                    Buck, D.A., and James, R.N. Tue .  
        "Power tong torque control".  United States.

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@article{osti_5998588,

  title        = {Power tong torque control},

  author       = {Buck, D.A. and James, R.N.},

  abstractNote = {Torque controlled powered pipe tongs, are described the apparatus comprises: (a) a power tong powered by a fluid motor; (b) a fluid power source connected to the motor; (c) a force conducting element attached to the power tong, situated to oppose reaction torque from the tongs when torque is applied to pipe; (d) force sensing means operatively associated with the force conducting element situated to sense at least part of the force experienced by the force conducting element, arranged to produce a pressure signal proportional to force sensed; and (e) a fluid by-pass valve, adjustably biased toward a closed position, responsive to the signal to tend to move toward an open position, the by-pass valve connected between the fluid power source and the motor.},

  doi          = {},

  journal      = {},

  number       = ,

  volume       = ,

  place        = {United States},

  year         = {Tue Oct 20 00:00:00 EDT 1987},

  month        = {Tue Oct 20 00:00:00 EDT 1987}

}

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