MB reservoir in H oilfield is mainly carbonate reservoir with pores,and water injection development is the main development method.The quality of injected water affects the effect of the oilfield development.The injected water quality standard of H oil field was studied,and the main control indexes such as the median particle size,suspended matter content,oil content and bacteria content of the injected water were obtained by core displacement experiment and dynamic corrosion experiment.The results showed that the median particle size index of suspended solids was less than or equal to 2.5 μm.Suspension content index was no more than 10 mg/L,oil content indexwas no more than 15 mg/L,the content of saprophyte (TGB) should be no more than 100 per mL,the content of iron bacteria (IB) should be no more than 10 per mL,and the content of SRB should be no more than 10 per mL.The results provide experimental basis for water injection quality standards in H oilfield,and also provide reference for research on water injection quality in similar areas.

The determination of effective thermal conductivity of wax deposits is an important part of calculation of the heat transfer in wax deposition. Based on the analysis of effective thermal conductivity calculation method of heterogeneous binary mixture, a model suitable for calculating effective thermal conductivity of wax deposits is determined, and the influence of different effective thermal conductivity calculation methods on heat transfer characteristics of pipelines is compared and analyzed. The results show that the effective thermal conductivity of wax deposits becomes larger with the increase of mass fraction of wax in the sediments. Under the same mass fraction of wax, effective thermal conductivity calculated by parallel model is the largest, followed by ME2 model, EMT model and series model, and the calculation results of ME2 model and EMT model are close. The hypothesis of EMT model is similar to the structure distribution of actual wax deposits, so it is recommended to use the EMT model to calculate effective thermal conductivity of wax deposits. The temperature along the pipe section calculated by EMT model and M correlation is very close, and radial temperature gradient obtained by EMT model is higher than M correlation. Generally speaking, the heat transfer calculation results of pipelines obtained by EMT model and M correlation have little difference, but correlation is more convenient and has certain advantages.

In order to study the local mechanical properties of pipeline's defects, taking X70 pipeline as the research object, based on the knowledge of elasticplastic mechanics, ANSYS is applied to simulate the distribution near defects of Von Mises stress and plastic strain under the action of high temperature. Then the variation tendency of the maximum stress and plastic strain of key parts near defects with the increase of internal pressure is analyzed. Also, the variation trend of the maximum Von Mises stress with the corrosion depth under the specific operating pressure is discussed. Finally, the Von Mises stress distribution and variation considering and without considering the temperature expansion are compared. The results show that there is a greater stress along the circumferential direction in the corrosion zone at high temperature. With the increase of internal pressure, the maximum Von Mises stress decreases first and then increases, and the greater stress also becomes axial distribution. ASME B31G1984,ASME B31G1991,PCORRC and DNVRPF101 methods are still suitable for evaluating the residual strength of pipelines under high temperature. 

The field experiment of AlkaliSurfactantPolymer flooding utilizing domestic plant oil carboxylate surfactant firstly on the N block in Daqing oilfield is investigated. Imported sulphonate surfactant used as ASP flooding in Daqing oilfield utilizing is more costly. To reduce cost and increase economic efficiency, plant oil surfactant was firstly employed on the N block in Daqing oilfield. In this experiment, PBH808E carboxylate was used as surface active agent. The test results of asp flooding through indoor core displacement experiment and field experiment were analyzed. It presented that the oil recovery of ASP flooding was more than 20 percent compared with water flooding. Oil emulsification was important to effect oil recovery efficiency. Tracking and adjusting system viscosity can get better trial result. Study and evaluation in this test have a positive effect on the research of ASP flooding in Daqing oilfield.

For exploring the influence of POE（Poly Olefin Elastomer）on the aging properties of SBS modified asphalt, the index of rheological analysis, fluorescence microscope analysis, as well as the infrared spectroscopy measurement of the SBS modified asphalt, POE/SBS modified asphalt, and its residue after shortterm and longterm aging performance testing were investigate. The results indicated that POE can be compatibilized with the SBS modified asphalt due to its good molecular mobility. In this way, the SBS can be dispersed more homogeneously and be swollen more effectively, through which the aging process is reduced in this compatibility system.

Acidity and accessibility of LNiY were characterized by in situ FTIR spectroscopy with pyridine (Py), 2,6dimethylpyridine (DTPy) and 2,6ditertbutylpyridine (DTBPy) as the probing molecules, and the texture properties were characterized by N2 adsorption method. The textual property results indicate thatmesoporous defect positions exist in the prepared LNiY zeolites.The in situ FTIR results imply that hydroxyl are strong Brnsted acid in supercages of the LNiY zeolites. The accessibility of the Brnstedacid sites is different, and the ones in the defect positions show the more excellent accessibility. 

Surface acidities of the Y zeolites(NaY、HY、LCeY) were characterized by insitu PyFTIR and NH3TPD methods. The adsorption and catalytic transformation behaviors of thiophene on Y zeolites were studied by insitu FTIR technique. The results indicate that Brnsted (B) acid sites of Y zeolites play an important role in the progress of protonation and oligomerization. The order of catalytic properties of Y zeolites is LCeY > HY, which can be attributed to the concentration and strength of the surface acidities and the synergy between rareearth ions species and Brnsted (B) acid sites.

A NiB/C catalyst was prepared by a chemical reduction method, and characterized by inductively coupled plasma direct-reading spectrometer (ICP), X-ray diffraction (XRD), scanning electron microscopy (SEM) and differential scanning calorimetry (DSC) techniques. Its catalytic properties were investigated by the reaction of catalytic hydrogenation of nitrobenzene to p-aminophenol (PAP). The characterization result suggests the composition of the amorphous NiB alloy is Ni79.4B20.6, the highest crystallization temperature is 643 K and the alloy particle size is about 30 nm. Nitrobenzene conversion of 80.23%, PAP yield of 11.21% was obtained. The results show that NiB/C catalyst had high catalytic activity on the reaction of catalytic hydrogenation of nitrobenzene.

The structural style and working principle of the external floating roof tank's automatic breather valve were briefly introduced.Fixed the analogical standard of the oil vapour space between the factory end and the floating plate when it was unrisen.The volume ofthe roof tank decides the heat affecting volume calculate the tank throughtout and the breathing area of the breather valve.According to the fluid steady flow mathematical equation,deduced the height computing formula of petroleum production flowing into the automatic breather valve.Definite the design height that the valve handle must possess when the breathing area was given.And then analyze the oil spill reasons of the established oil tanks,which may be caused by the lacking of breathing area or the design height of valve handle,and the problems must pay attention to in future design.

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

Without any organic solvents and halide, the oxidation of thiophenic sulfur into sulfone which would be extracted by the ionic liquid catalyzed by Na2WO4·2H2O with mass fraction of 30% hydrogen peroxide in acidic ionic liquid ［(CH2)4SO3HMIm］TSO was investigated. Effects of temperature, reaction time and amount of catalyst on the reaction of oxidative desulfurization were also investigated. The optimal reaction conditions are as follows: 3 mL oil sample (500 μg/g sulfur content), the ratio of 40∶1 for n(IL)/n(Na2WO4·2H2O), 0.7 mL hydrogen peroxide, reaction temperature of 333 K and reaction time of 2 h. And the rate of desulfurization is 97.4% under this condition.When the reaction was completed, diesel oil and catalyst could be separated by simple decantation. The catalyst could be recycled 4 times without obvious change in catalytic activity.