The hierarchically mesoporous Hβ zeolite was synthesized by alkali treatment to commercial Hβ zeolite in NaOH solution. The composite carrier was prepared by mixing the hierarchical Hβ zeolite and Al2O3.The hierarchical NiWP/HβAl2O3 catalysts were prepared by incipient wetness impregnation method, and characterized by means of XRD, BET and TEM. The hydrodearomatization of the prepared NiWP/HβAl2O3 catalyst was evaluated in a miniature fixed bed reactor with fluid catalytic cracking diesel as raw material. The results suggested that the prepared NiWP/HβAl2O3 catalyst has an excellent hydrodearomatization activity, and under the condition of the reaction temperature 360 ℃, reaction pressure 8.0 MPa, hydrogen to oil volumetric ratio 800 and liquid hourly space velocity 1.0 h-1, the cetane number was increased from 7.21 of feed to 46.96 of product.

Using Al2O3, HNO3 and other components as binder component, Ni as active component, ZnO as sulfur storage material, the adsorptive desulfurization catalyst was prepared by equal volume impregnation method. The effects of the Al/Si mass ratio, kneading time of the supporter, adding quality percentage of nitric acid and binder component on catalyst’s desulfurization performance and mechanical strength were investigated. The results showed that the catalyst’s desulfurization performancewas improved when the adding quality of nitric acid, pseudo boehmite and kieselguhr was increased. The desulfurization performance was increased and then decreased with increasing of Al/Si mass ratio, increased and then kept stable with increasing of kneading time. The catalyst’s mechanical strength was improved when the Al/Si mass ratio increased, the adding quantity of nitric acid decreased, pseudo boehmite and kieselguhr increased and the kneading time increased.

Gel content has a certain impact on the immanent quality of rubber products and processing performance. Therefore, it is crucial for brominated butyl rubber to control the gel content. Brominated butyl rubber (BIIR) was prepared by solution method and the effect of the brominated process such as bromination temperature, additives, bromination time and bromide agent on the gel content of BIIR was investigated. The results show that the appropriate reaction temperature is conducive to the control of the gel content. Gel content will increase with the increasing of the concentration of time and bromide agent. The additives can lower the gel content.

Pump injected reverse circulation drilling is a new drilling method. It has lots of advantages (such as cleaned hole and high ROP) compared with previous method, which can be used in drilling complex structural well. As we all know, cyclic pressure loss is one of the most important topics in drilling. The laws of cyclic pressure loss in different nozzles or mud parameters are studied experimentally in lab. The paper analyses the major factors affected cyclic pressure loss, according to results of the simulated experiment. It comes to the conclusions that the area of the bit nozzles should be a half of the drilling stem. And the edge of the bit is the best position to place the bit nozzles. At the same time, the cyclic pressure loss can be higher while the density of drilling fluid increases. However, the density doesn’t seem to affect the best arrangement of bit nozzles. Theoretical basis is provided for optimized design of pump injected reverse drilling bit nozzles.

According to the problems of that the serious blockage of polymer injection wells, the high injection pressure and the bad effect of polymer injection in Xingnan oilfield, the polymer and water of a block in Xingnan oilfield was adopted to carry out the laboratory experiments on simulation of polymer flooding and plugging and then the reason of blockage was found out.  The results show that the polymer and mechanical impurities are the main factors to cause the pore blockage, and the lower the permeability, the more serious the blockage. Aiming at the blockage reason, laboratory experiment study on the formula of plug removal agent was carried out. Finally the multiple plug removal agent consists of agent A, B and C was determined. On the basis of optimizing the mass fraction of each agent, the injection volume and the injection order, the broken down rate of formations can reach 102.41%~124.77% with this plugging removal agent formula.

Chang 8 layer in northeastern Zhiluo oilfield of Ordos basin is a structural lithologic reservoir controlled chiefly by lithology with many oil water layers. There are many oil water layers in this region. Aiming at this characteristic, on the basis of the methods of pressure coring, mercury injection and log data interpretation, the data of relative permeability analysis is used to to interpret and revise the original oil saturation in the area. The four methods are used to calculate the original oil saturation in Chang 8 layer of northeastern Zhiluo oilfield and the advantages and disadvantages of each method are analysized. The reasonable original oil saturation in Chang 8 layer of this area is determined, and the accuracy of calculation of reserves is improved. The method of relative permeability analysis data is the best method to calculate the original oil saturation in this area, eventually the original oil saturation value is 45.6%.

The seam crack point of multiple branch seam fracturing is not clear. Based on the theory of porous media of fluid solid coupling mode, Comsol software was used to simulate branch seam fracturing process using finite element simulation. The changing law of stress concentration of seam crack point and shaft crack point was analysized under the condition of different stress difference it was found that with the increase of net pressure on the seam, there was a difference which distinguished between crack priorities. By controlling the net pressure change within joint, the crack priorities was adjusted, the number of multi branch fracture was controlled, and the multi branch seam hydraulic pressure of the complexity of the fracture network was ensured. Calculation analysis of hailaer oil field on the spot was used to adjust the net pressure inside seam. The result of construction was same with simulation, and can be used to guide the construction to improve the success rate of multi branch seam hydraulic fracturing.

Aimming at the problem of shorter validity period during early flooding stage for low permeability fractured reservoirs in Shuanghe oil block from Zhidan oil field, a technical study and application of multistage compounding flooding was carried out. Based on the profile and flooding mechanism of different slugs, the agents were screened and evaluated indoor. Consumption volume, slug combinations, displacement volume and pressure in flooding scheme were optimized. Field test for SH 69 well proved that using the multi slug compound flooding way of polymer protected slug + high cure system + delayed swelling gel system + delayed crosslinking gel system, the climbing pressure was 2.2 MPa, the start up pressure of injection well was increased with 0.72 MPa effectively, and injectivity index was reduced with 1.9 m3/(d·MPa), which had an obvious effect of controlling water and increasing oil for corresponding wells. The valid period for this type of flooding was up to six months or more, which achieved the integration process of control and flooding, realizing the target of adjusting water injection profile and increasing oil recovery.

Generally, water production of natural gas well is important in the gas field development, and parts of production water of high temperature gas wells exist in saturated water vapor form, leading to measurement result deviation. In order to reduce the  water measurement result deviation of high temperature gas well production, it is necessary to calculate the saturation water content of natural gas and correct the deviation from production water measurement. Through the analysis of natural gas water content calculation method principle, and the contrast in the practical application effect of Y13 gas field, the method of semi empirical formula with theoretical derivation is suitable for the actual Y13 gas field. According to this method, the average deviation can be decreased from 60% to less than 6%. 

In the process of polymer flooding in daqing oilfield, there are some problems such as water consumption growing tensions, sewage treatment increasing more differences and the problem of injecting sewage becoming serious. Using the produced sewage instead of water to dilute polymer solution flooding will be widely attached. Aiming at the characteristics of polymer flooding sewage depth by polymer flooding sewage and sewage water quality analysis, polymer flooding sewage by oxygen exposure and sterilization was used to study flow characteristics and oil displacement effect. Results show that, compared with deep treatment sewage, residual resistance coefficient with polymer solution is high after polymer flooding sewage dilution, the ability to reduce water phase permeability is enhanced, and recovery factor is improved. Under the same conditions of permeability, molecular weight, concentration, and depth of sewage displacement effect of polymer solution is not ideal compared to dilute oil, and the value of recovery efficiency  differs by about 1%. The same effect with the polymer flooding deeply produced by sewage dilutes can be achieved if the concentration of polymer solution diluted by the polymer flooding sewage is increased.