Shear history simulation experiment device and method for non-Newtonian crude oil

Abstract

The invention discloses shear history simulation experiment device and method for non-Newtonian crude oil. The device comprises a motor, an infinitely variable transmission, a computer, a temperature measurement collection device and a stirring device, wherein the stirring device comprises a stirring tank, a stirrer, a hot bath heating coil and an arc double-hole floating cover; the stirring tank comprises a water bath jacket; the stirrer is inserted into the stirring tank; the hot bath heating coil encircles around the inner wall of the stirring tank; the arc double-hole floating cover is arranged at the top of the stirring tank; a hole I and a hole II are formed in the floating cover; the motor is connected with a driving shaft of the infinitely variable transmission; a driven shaft of the infinitely variable transmission is connected with the stirrer through the hole I; the computer is respectively connected with the infinitely variable transmission and a temperature collection device; the temperature collection device is connected with the stirring device. The shear history simulation experiment device and method have the beneficial effects that the shearing action of in-line flow shear and pump high-speed shear under a turbulence state on the rheological property of the non-Newtonian crude oil can be measured by using the device, and a whole transportation process of a crude oil pipeline is simulated.

Description

Technical field [0001] The invention relates to a non-Newtonian crude oil stirring experiment, in particular to a non-Newtonian crude oil shear history simulation experiment device and method. Background technique [0002] During the normal pipeline transportation, shutdown and restart of the pipeline, the temperature of the crude oil in the pipeline will gradually decrease along the pipeline. When temperature T <TZ (crude oil freezing point) + (10~15℃), due to the precipitation of wax crystals in crude oil, the volume of colloidal particles composed of asphaltenes and gums will increase, which will show complex physical phenomena of non-Newtonian fluids. The variant type is non-Newtonian crude oil. [0003] The shutdown and restart of crude oil pipelines is an inevitable production process. If crude oil condenses accidents, it will cause huge losses. The rheological properties of crude oil are the fundamental reason that affects the restart rule of non-Newtonian crude oil. Th...

AI Technical Summary

Problems solved by technology

The existing experimental devices at home and abroad are generally small loops or rheometers, and the fluid in the tube is in a laminar flow state, which is quite different from the actual pipeline on site.

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