APPARATUS TO DETERMINE THE VISCOSITY OF A WELL FLUID, APPARATUS TO DETERMINE THE VISCOSITY OF A WELL FLUID, AND METHOD FOR MEASURING A VISCOSITY OF A WELL FLUID

摘要

Apparatus for determining the viscosity of a well fluid, Apparatus for determining the viscosity of a well fluid, and method for measuring a viscosity of a well fluid Vibrating wire viscometers are disclosed. An exemplary apparatus for determining the viscosity of a well fluid is described, the apparatus including a wire to be immersed in a well fluid, to vibrate when an alternating current is applied to the wire within a magnetic field, and to generate a force electromotive during vibration within the magnetic field, the wire comprising a first resistance. The apparatus further includes a wire coupled override circuit, wherein the override circuit comprises a second resistor, which is selectable to be substantially equal to the first resistor, and an analyzer coupled to the wire and override circuit to determine the first resistor, the second resistance, and a well fluid viscosity based on the first and second resistances, at least one characteristic of the wire, and the electromotive force.