The oil sands reserves in the Urho area of Xinjiang are relatively abundant. Therefore, it is necessary to analyze its composition and structure so as to provide references for the selection of industrial processing schemes for oil sand separation. In this paper, the composition and structure of oil sands are determined by means of instrumental analysis. The experimental results show that the oil content of oil sands is 6%~16%, the solid content is 82%~92% and the water content is between 0.5%~2.0%. The sum of the contents of carbon and hydrogen in the extracted bitumen oil is 91%, the sulfur content is low, and the oxygen content is relatively high, which is 7%. The mass fractions of saturated fraction, aromatic content, colloid content, asphaltene content are 40%,21%,27% and 12%, respectively. The solid phase of oil sand is mainly composed of clay and sand. The main compositions are SiO ₂ and Al ₂O ₃, and the average diameter of oil sand is 204 μm.

Basic nitrogen and sulfur contents in each fraction of fluid catalytic cracking diesel (FCC) from numerous refineries were analyzed by volumecutting method. The results show that sulfur contents rise and basic nitrogen contents decline with boiling point elevation in the FCC diesel. The comparison experiments of straightrun diesel show that both basic nitrogen and sulfur contents rise with boiling point elevation. In the FCC diesel, the basic nitrogen contents in the light fractions of 0%~60% (volume percent) account for 78.6%~86.9% of total basic nitrogen contents, and sulfur contents in the heavy fractions of 60%~100% (volume percent) account for 49%~56% of total sulfur contents. Those indicate that basic nitrides and sulfides concentrate in light fractions and heavy fractions, respectively.

The rheological behavior of LWZ polymer solution and LWZ gel were separately studied with rheometer of HAAKE RS600. Dielectric withstand voltage test detected the withstand voltage of gel. The results of rheological test show the polymer solution of LWZ was Ostward de Waele fluid and the viscosity is 120 mPa•s at 30 ℃. Viscosity-temperature curve show when the temperature raised, the viscosity of LWZ base fluid decreased. The test of oscillation stress sweep and oscillation frequency sweep and oscillation time sweep show that LWZ gel owned high elastic properties. In addition, the yield value of LWZ gel is 172.4 Pa. Dielectric withstand voltage test indicated LWZ gel could resist pressure of 0.057 5 MP/m in the height of 1 m and diameter of 126 mm N80 pipe under 100 ℃. 

To study the plugging properties of novel profile control agent carboxymethyl starch, it uses laboratory-made solvent carboxymethyl starch block experiment as the plugging time under the same filter volume to determine the performance indicators. It is found that the blocking performance is affected by carboxymethyl starch concentration, solution salinity and temperature and time of storage. With increasing the concentration of carboxymethyl starch and salinity, the sealing performance of the solution is improved; the solution of the filtration time is increasing trend at 70 ℃ and is decreasing trend at 90 ℃ with increasing storage time.

Based on the four － equation model describing the fluid structure interaction （FSI） in axial vibration for liquid －
filled piping system ， the effects of Poisson ，friction and junction coupling on the axial response of the piping system were
studied ．The method of characteristics （MOC） was described in detail and the transient response of the reservoir － pipe － valve
system to instantly valve closure was numerically simulated ．The numerical analyses show that the FSI can not be ignored ．The
Friction coupling is less important while the junction and Poisson coupling are more important ．The common calculation models
of pressure wave speed were reviewed ，the optimization calculation model was recommended and the effects of void fraction on
the speed were analyzed ，aiming at providing a theoretical guide for further study of the FSI analysis of gas － liquid two － phase
flow pipes