Experiment and Study on the Rheology of Wet Extra-viscous Crude

In the light of the property of wet extra-viscous crude in Liaohe Oilfield, experiment and study are made with spot samples on the influence of water cut, temperature and shear rate of wet extra-viscous crude to crude's rheology. Test is carried out by means of thin tube rheometer self-designated, and the rheological characteristic of this crude at different temperatures and water cut conditions is verified from the test. Experimental results show that the water cut and temperature of the crude obviously influence the rheolo-gical index, the higher the water cut at lower temperature, the farther the rheological index deviating from 1, and the stronger behavior of the non-Newtonian fluid is. Also, the temperature and water cut greatly influence the rheology behavior of the crude, and when temperature goes up, the apparent viscosity lowers down.