Titanium dioxide@2,5⁃Dimercapto⁃1,3,4⁃thiadiazole@silicon dioxide (TiO2@DMTD@SiO2) composite materials were synthesized by NaF hydrothermal etching combining with sol⁃gel method. The crystalline structures and morphologies were characterized by X⁃ray diffraction (XRD),Fourier transform infrared (FTIR) spectroscopy,scanning electron microscopy (SEM). The hydrophilicity of the coating was tested by the video optical contact angle, and the anticorrosion performance of the coating was evaluated by electrochemical method.The results show that contact angle of the epoxy coating with TiO2 doped nanocontainers is 71.9°,which can effectively prevent the invasion of corrosive media. Moreover, it has higher corrosion resistance than the blank epoxy coating, after immersing in 3% NaCl solution for 1 to 7 days.

After the XQ⁃45 block entering the multiple rounds of steam huff and puff, it is affected by edge water, faults, reservoir properties and other factors. The remaining oil distribution is complex, and steam huff and puff effect is getting worse. According to the reservoir dynamic data, the 79 wells in this block are divided into different types of heavy oil wells according to the remaining oil saturation parameters. Among them, the number of remaining oil wells affected by edge water is more than 22. As the edge water proceeds along the high⁃permeability layer to the oil well, the water content rises quickly and easily causes flooding. To further improve the effect of steam huff and puff, aim at the unutilized section in the edge water affected oil well, and take the single⁃layer steam huff and puff mode to study the optimization of steam huff and puff parameters affected by edge water. Through extract single⁃well geological model and compare different steam injection programs, the best program is selected: steam injection volume is 100 t/m, the oil steam ratio maintain at 0.2 t/t or more, obtain the maximum amount of oil production. The results show that cycle steam injection volume is 100 t/m, the oil production is the largest in the third cycle, and the sweep radius of steam reaches the maximum. After 5 rounds of steam huff and puff, cumulative steam injection volume is 3 700 t, cumulative liquid production is 4 500 t, cumulative oil production is 738.65 t, and the program implementation effect is getting better.

Self⁃assembled monolayer films of i⁃salicylaldehyde⁃o⁃phenylenediamine (A) and di⁃o⁃vanillin⁃o⁃phenylenediamine (B) were fabricated respectively on copper electrode surface by molecular self⁃assembled process. The corrosion inhibition performance of the Schiff bases self⁃assembled films (SAMs) in 3.5% NaCl solution was examined by electrochemical methods. The best corrosion inhibition rate of Schiff base A reached to 94.06% with the concentration of 10 mmol/L and assembly time of 4 h at 25 ℃. For Schiff base B, the best corrosion inhibition rate reached to 96.62% with the concentration of 15 mmol/L and assembly time of 6 h at 25 ℃. The results showed that two inhibitors had good corrosion inhibition performance, and the inhibition effect of B was better than that of A.

There are many problems in the development process of the low permeability oilfields including water injection difficulty, high water flooded degree, low utilization efficiency of injected water and gas channeling of gas injection. Through a large number of laboratory physical simulation experiments and tests, the best CO2foam system was selected out for a low permeability blocks CO2foam flooding in Jilin oil field. The stability, foaminess, injectivity and applicable scope of the permeability of three systems were conducted. The results showed that the three kinds of foam agent all had good foaminess and stability, and all of them could be injected within the range. When the temperature rose from 45 ℃ to 100 ℃, the halflife of foam systems sharply reduced, and the stability of them turned bad. In the three foam systems, FP388 was the optimal one which had best foaminess and comprehensive performance.

Calix［4］arene Sulfonic Acid Sodium was used as a non homogenous catalyst for synthesis of nButyl acetate using acetic acid and nbutyl alcohol as raw materials. The effects of reaction conditions, such as the quantity of catalyst, the ratio of the reactants and reaction time were discussed respectively. The product was characterized by index of refraction. The suitable conditions for the reaction were as follows: acetic acid 0.1 mol, molar ratio of nbutyl alcohol to acetic acid 1.2, catalyst amout 1 g, reaction time 4 h, the yield of nbutyl acetate can reach 81.41%. The catalyst could be used repeatedly keeping its initial activity. 

For accurately identifying the mode of AE signal, the noise in the AE signal must be removed. The denoising results by conventional means of filtering are unsatisfactory, the denoising method by threshold on wavelet coefficients shows unique advantages. Aiming at threshold selection risky problem in the denoising method by threshold on wavelet coefficients, Kmeans clustering method was used to classify the highfrequency coefficients by wavelet decomposition, determining the removal threshold for the wavelet coefficients corresponds to the noise, then the wavelet coefficients were reconstructed to achieve the denoising purpose. Hardthreshold method and softthreshold method was applied on denoising method by threshold on wavelet coefficients for AE signal, threshold generated by Kmeans clustering approach and threshold generated by the improved Donoho method were respectively used as the threshold for the denoising method by threshold on wavelet coefficients, experimental results show that in the three indicators of signal to noise ratio, root mean square error and smoothness, the proposed method is superior to the improved Donoho method.

Calix ［4］ arene was synthesized by dealkylation reaction using ptertbutylcalix ［4］ arene and phenol as raw material in the presence of anhydrous AlCl3. Then 5,11,17,23four sulfo phenyl)azo calix ［4］ arene was synthesized by coupling reaction using calix ［4］ arene and pamino benzene sulfonic acid as raw materials. In the presence of tinhydrochloric acid, 5,11,17,23four sulfo phenyl)azo calix ［4］ arene was reduced to 5,11,17,23four aminocalix ［4］ arene hydrochloride. The synthesized compounds were characterized by thermal analysis, infrared spectrum analysis and UV spectra of the synthesized compounds. By using the method of synthesis of calix ［4］ arene ammonium hydrochloride yield is high, cost is greatly reduced.

Based on the corrosion theory of the process of injection, The injected water corrosion of Qin Huangdao 32-6 oil field was evaluated. It considered several important factors affecting the corrosion of the injection process, such as salinity, dissolved oxygen content, hydrogen sulfide content and bacterial action, and adopted the methods of the indoor corrosion experiments evaluation and using simulation software to predict. Experimental research show that the average corrosion rate of the injected water is 0.037 7 mm/a, so the corrosion index of the injection system is up to standard in low level. According to the actual running data of the produced water, using software to predict the corrosion of three cases, such as FPSO platform pipeline, sea tube transport and injection wells, whose results were consistent with that under the indoor experimental condition.

Potassium titanates were prepared by sol-gel method and having a high crystallinity. The structure, composition and framework of the material were investigated by means of X-ray diffraction (XRD), intelligent weight analyzer (IGA) and molecular simulation software. Catalytic activity of the catalysts for catalytic combustion of soot form diesel engines were treated. It is revealed that the potassium titanates catalysts have better soot oxidation performance compared with tradational catalysts. And through the different K/Ti of the titanium catalyst decarburization results show that K/Ti of 1∶1 potassium titanate catalyst for the removal of carbon black particles best; in loose contact with the next still able to maintain good activity. soot oxidation in titanates catalysts is the frist reactionary order. And the kinetic equation is well fitted with the experimental data.

The VOF (volume of fluid) method was employed to predict the characteristic of gas-liquid two-phase flow in desalination swirl nozzle. The numerical result was compared with the experimental data and they agree with each other very well. Analyse nozzle with different nozzle diffusion angles and export diameters and we can draw conclusions that the larger diffusion angle is, the greater liquid cone angle appears and it's not the bigger the better about diffusion angle. There is an optimal value in actual application. Nozzle diffusion angle will affect the velocity of inspiratory airflow by air cone. Air cone diameter decreases with nozzle diameter decreases, and there are two skips in velocity curves. One is in just entering the nozzle position (z=0.05 m), another is between nozzle export contraction and export expansion (0.02~0.04 m). Liquid closed to the exit of nozzle accelerates more rapidly with the nozzle diameter decreases and radial velocity on the outlet section becomes larger.

The self-assembled monolayers(SAMs) was synthesized in order to seek low-cost and high-yield exploration of ideas. It was assembled to the metal surface, thus achieving the purpose of preventing metal corrosion. Salicylaldehyde-ethylenediamine Schiff base was synthesized with salicylaldehyde and ethylenediamine. Optimum conditions were identified. The products were certificated by melting point, infrared spectra and mass spectra. The result was that salicylaldehyde-ethylenediamine Schiff base was identified. The Schiff base was first served as additives in a peanut oil and self-assembled on the surface of silver. The SAMs were described with Jinxiang microscope technique. Simultaneously it was briefly characterized with CV method. The results show that the heterogeneous electron transfer can be inhibited by Schiff base SAMs. The assembling rate of SAMs is fast and stable. Corrosion of the silver strip body is reduced. Effectiveness and value of metal protection are summarized on Schiff base SAMs.

2-(4-tert-butyl-phenoxy) cyclohexanol was synthesized through the reaction of 4-tert-butylphenol with epoxycyclohexane in the presence of catalyst, and through two steps of thionyl chloride derivatives alcoholysis, neutralization to produce propargite under condition of 15 ℃. 1NMR and IR were performed to determine the structure of intermediates and final product. The results show that the analytical sample is identical to authentic, and the chemical structure and the quality of this compound agreed with those of imported samples. Factors influencing the reaction yield were studied, such as feeding mode and reactions times. The optimum technical condition: 2-(4-tert-butyl-phenoxy) cyclohexanol is prepared from 4-tert-butylphenol and epoxycyclohexane and then thionyl chloride derivatives alcoholysis chlorinated sulfoxides to get intermediates. Intermediates reacted with propargyl alcohol in the presence of toluene to obtain the target material of 2-(4-tert-butyl-phenoxy) cyclohexanol. The total yield can be reach to 82% (based on 4-tert-butyl-phenol) and the purity is 98%.

New type VSP logging tool uses hydraulic and mechanical complex st ructure. It can avoid the failure of breaking eccentering machinery arms which caused by seizure of driving screw , and can withdraw the logging tool safely. Based on
ADAMS sof tware a mathematics model was established by choosing sensitive unit s size as varieties to do the analysis of dynamicsimulation, and also used penalty function to optimize the system. The simulation model also took eccentering machinery arms and support arms into consideration to adopt different well’s diameter, the range of testing well could be f rom 100 to 420 mm.
Af ter the experimental stage, this system can work steadily 2 000 times without stop under the condition of 180 ℃, water, drilling mud, oil and other kinds of erosive fluid, and the t ravel length can reach 10 000 m, the reliability arrives above 98 %. The using of virtual prototyping shorts the design periodicity, and the theoretical data is relative to the actual data which is obtained through experiment f rom physical prototype. New type VSP logging tool eccentering machinery is improved f rom the older one, and can avoid the t rouble of disassembly and save the cost a great deal.

Activated carbon supported phosphorus molybdenum tungsten heteropoly acid as oxybromination reaction catalyst was prepared via immersion method. Catalyst properties were investigated by X - ray diff raction (XRD) and IR methods. And
the oxybromination reaction activity of catalyst was studied with potassium bromide as bromine source and hydrogen peroxide as oxidizer. The result s indicate that the Keggin st ructure is still retaining af ter supported, and the catalyst exhibit s high oxybromination reaction activity and high selectivity of para product . Supported heteropoly acid slightly lost af ter reaction, but the whole physical phase of catalyst has no significant changes.

 

2′,4′,6′-Trimethyl-2-chloro-acetophenone was catalytic synthesized from mesitylene which was obtained from by-product C ₉ aromatic hydrocarbons, the refinery and chloroacetyl chloride with Friedel-Crafts acylation reaction by metal loaded catalyst. The influencing factors in the reaction were studied by the contrastive experimental results. The results show that metal loaded catalyst has a better catalytic activity for the acylation reaction of mesitylene and chloroacetyl chloride. The study on optimization of reaction conditions indicates that the yield of acylation reaction at 80 ℃ was over 91.2% after 4 h when the mole ratio of chloroacetyl chloride and mesetylene to loaded metal catalyst was 2∶1∶0.002 5. The compound was identified by refractive index and IR spectrum.