WRENCH WITH ADJUSTABLE TORQUE MOMENT FOR PIPE ELEMENTS AT OIL DEPOSIT Russian patent published in 2010 - IPC E21B19/16 

FIELD: oil and gas industry.

SUBSTANCE: wrench with adjustable torque moment for pipe elements includes lower and upper grips, pivot bearing located between grips, actuation system connected between grips and system for measurement of actual radius or system for measurement of actual vector of force created with actuation system. At that, pivot bearing provides the possibility of turning upper and lower grips relative to each other by means of actuation system. Measurement method of torque moment at bringing the wrench into operation involves measurement of actual radius measured perpendicular to force vector and between force vector and rotation axis of pipe element, or measurement of actual force which is applied for action of torque moment on the connection, and calculation of torque moment on the basis of at least one measurement.

EFFECT: increasing operating efficiency of spinning wrench.

12 cl, 6 dwg