Microwave On High Pour Point Crude Oil The Role Of Law In High Viscosity

The high viscosity and high-solidifying point crude oil is a kind of unconventional crude oil that contains such high percentage of weighty -component dispersed phase as wax ,colloid and asphalt. The present long-distance pipeline transportation of the crude oil exists many problems in the technological aspect.Microwave heating is a method that the dielectric loss is converted thermal energy. It is a penetrating heating and has fast heating speed. Because materials have different dielectric constant so that microwave heating has its selectivity. At the same time microwave heating has non-thermal effect besides thermal effect.The thesis states that microwave energy is applied to heat and change its characteristics in the transportation of the crude oil . microwave energy can not only decrease viscosity and solidifying point of the crude oil but also dehydrate. Therefore, the transportation technique can accomplish economical,high-effective,cleanly and fast transportation and purification of the crude oil.The regularity of the microwave on different components of the crude oil was analyzed experimentally and theoretically in order to understand the mechanism of the action of microwave on the crude oil and provide theoretical guide to application and promotion of this microwave heating transportation technique.In this thesis the effect of microwave on the highly viscous and high-solidifying point crude oil and its different components was studied by indoor experiments ,at the same time, the components and structure of the crude oil were also tested before and after the experiments by means of chemical analytical means such as infrared spectrum, club-shaped spectrum and chromatograph/ mass spectrogram and so on. The rheological indexes,solidifying point,yield value,viscosity-temperature curve and flow curve of the crude oil were also determined after the experiments. According to experimental results, the mechanism of microwave on the crude oil was analyzed qualitatively.The relation between microwave power, running time of microwave and cut of crud oil and dehydration rate was researched by the method of uniform design. The experiential results manifest the relation that microwave parameter and dehydration rate were fitted on the ground of the foregoing experimental results.The dielectric constant of the crude oil and its components were measured .Making use of FDTD calculation program and experimental results, the distribution of temperature and electromagnetism in the heating chamber was determined. According to electromagnetic field theory and the regularity of microwave colloid,asphalt ,paraffm in crude oil and W/O emulsion, the mathematical model of the effect of microwave on the crude oil was established and its solution was attained . The mathematical model was also verified by experimental results.In addition, the regularity of microwave on the highly viscous and high-solidifyingpoint crude oil and its different components was further analyzed in accordance with the results of the experiments and theoretical calculation.Finally, based upon the results of the indoor experiments and theoretical research, microwave heater in single well pipeline was manufactured and tried out in the oilfield . The successful test in the oilfield indicates that the microwave heating theory is feasible in the long-distance pipeline transportation.