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Title: Power tong torque control

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:
;
Publication Date:
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

Citation Formats

Buck, D.A., and James, R.N. Power tong torque control. United States: N. p., 1987. Web.
Buck, D.A., & James, R.N. Power tong torque control. United States.
Buck, D.A., and James, R.N. Tue . "Power tong torque control". United States.
@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}
}