The aquathermolysis of Shengli heavy oil during steam stimulation was studied by using a new oil-soluble catalyst for the reaction in this paper. The laboratory experiment shows that the viscosity reduction ratio of heavy oil is over 75% at the circumstances of 200°C, 24 hs, 0.3 % catalyst solution. The viscosity of upgraded heavy oil is changed from 25306mPa•s to 6175mPa•s at 50°C. The chemical and physical properties of heavy oil both before and after reaction were studied by using column chromatography (CC) analysis and elemental analysis (EL). The percentage of saturated hydrocarbon、aromatic hydrocarbon and H/C increased, and resin、asphalt and the amount of element of S,O and N decreased after the aquathermolysis. The changes of the composition and structure of the heavy oil can lead to the viscosity reduction and the improvement the quality of heavy oil. The results are very useful for the popularization and application of the new technology for the in situ upgrading of heavy oil by aquathermolysis.

This paper studies the effect of different microwave power levels, heating time, intermittent time and slice thickness on the drying kinetics of papaya slices. The influence towards the color appearance, the papaya microwave intermittent drying characteristics and the tendency of water loss were obtained. The results indicated that the drying rate of papaya during the microwave intermittent drying consistently declined with the change of microwave power levels. Meanwhile, the paper made comparison of the papaya drying qualities within different factors, which providing reference for the later practical using.

The principle of preparation of PFASS by using gangue was introduced in this paper. By examining indicators such as COD, SS and chrominance, the best dose and operating time were evaluated for waste water from Changing oil field. It was showed from the experiment that: PFASS produced from the technology mentioned in this paper had a good effect on the waste water in oil field; using PFASS produced from gangue to treat field water is a good way to fight against waste by waste.

The fine grain, poor sorting and high cement content in low permeability reservoirs lead to poor reservoir property, low porosity and permeability and have strong damage to the reservoir .The conventional way of low permeability oil mining is mainly fracture and chemical flooding, which cost is relatively high and will cause serious irreparable damage to formation. People are in favor of physical oil production technology because it is no harm and pollution to the reservoir, more flexible to operate and it has wide range of application and low cost. By using high frequency pulse pressure servo system and ZC-type I, this paper examines the low-frequency vibration oil recovery indoor simulation test device hydraulic pulse oil displacement effect of low permeability cores. The experiment selecting the artificial core (permeability are less than 50), examines the effects of different hydraulic pulse parameters (frequency, static pressure and dynamic pressure) on low permeability core permeability and recovery factor. The results showed that only when the three parameter ,hydraulic pulse frequency, static pressure and dynamic pressure, suitably combined will greatly increase the reservoir recovery efficiency and reduce residual oil saturation.