The sedimentary process of Wutonggou formation is controlled by coastal underwater alluvial fan and alluvial fan in the Tainan depression of Tuha basin. For the complicated sedimentary setting, it's difficult to identificate the microfacises with lacking of systematic studies on log facies. The representative sedimentation microfacies with obvious facies marker were selected to make contrast and summarize up the features of well loggs. The model was established for different microfacies. The first 11 lowfrequence wavelet coefficients can perform well in reconstructing variation trend of GR log. There are significant differences in the wavelet coefficients and reconstructed lowfrequence curves and highfrequence curves among different sedimentation microfacies. The variation law of lowfrequence wavelet coefficients in every microfacies was analysized from the hydrodynamic force and other sedimentology aspects. By doing these, the abstract information of sedimentation microfacies belonging to geological space was converted into specific low dimensional feature vector of digital space. Based on this point and combing the characteristic of lowfrequence curves and highfrequence curves, a set of sedimentation microfacies identification templates was established. Sedimentation microfacies were identified by calculating the minimum Euclidean distance of logging curves between small layer and identification templates, with the combination of comparing the characteristic of lowfrequence curves and highfrequence curves between them.

 

For the industrial field test of ASP flooding containing NaOH in secondclass reservoir which located in the east fault of Daqing north No.1 Zone, the variation trend of CO ₂ content in the center oil well associated gas and the chemical interaction law of ternary system was analyzed. Interfacial tension, viscosity and oil displacement efficiency of the composite ternary system which consisted of sodium hydroxide and sodium carbonate were studied. Ternary system of composite alkali（F21 for short）which was composed of HPAM concentration of 2 000 mg/L, HABS mass fraction of 0.3%, sodium hydrate mass fraction of 0.8% and sodium carbonate mass fraction of 0.3% had a better comprehensive performance. Its equilibrium interfacial tension at 2 h was as low as 6.5×10 ^-3 mN/m. Its viscosity increased by 28.5% compared with strong alkali system and rised as intensity of composite alkali decreased. Recovery ratio of ternary system of composite alkali（F21 for short）improved by 24.4% compared with water flooding which was similar with strong alkali system chemical flooding. Recovery ratio of heterogeneous model chemical flooding decreased by 2.4% compared with homogeneous model.

The inclusion compounds of carbofuran with β-cyclodextrin (β-CD) were prepared by kneading method and aqueous-solution method. The properties of the compound were investigated by FT-IR spectra, UV-vis spectra and Fluorescence spectra. The solubility of carbofuran in aqueous solution increased in the presence of β-cyclodextrin due to complex using UV-spectrophotometric measurements. The results show that 1∶1 inclusion complexes are formed between β-CD and carbofuran. The intrinsic fluorescence of carbofuran can be enhanced by β-CD. The binding constants are obtained according to the Stern-Volmer equation. The corresponding thermodynamic parameters ΔH, ΔG and ΔS are calculated. Their values suggested that enthalpy and entropy are the main driving force for the inclusion reaction.

Core flood experiments were carried out using unconsolidated SiC sand －packs at different injection rates under isothermal conditions． The thickness of adsorbed polymer layers could be calculated from the residual resistance factors
measured in core flood experiments．The results show that adsorption of cationic polymers in porous media is affected mainly by electrostatic attraction and hydrodynamic forces． At low polymer injection rates， polymer adsorption is dominated by electrostatic forces， while it is dominated by hydrodynamic forces at higher polymer injection rates． The adsorbed layer thickness increases linearly from 290 to 1510 nm with polymer injection rates．The adsorbed layer thickness is also affected by the brine injection rate in back－flush： high brine injection rate can increase the adsorption． Therefore， the adsorption of
polymers can be improved using higher rates in squeezing both polymer and back －flush brine solutions，and so the water control efficiency．

             Curing reaction process of anti-fogging and abrasion-resistant organosilicone coatings was studied by the method of differential scanning calorlmetry (DSC). Meanwhile absorption peak variations of the functional groups were characterized by in situ tracing of FTIR in the curing reaction process. The dehydration rate of the associated hydroxy groups in the organosilicone colloid is very fast at the initial time, while the dehydration degree is higher at higher curing temperatures, especially at 100～130 ℃, and the curing temperature of organosilicone coating was found at 140 ℃. At last, the optimum curing reaction conditions were determined:curing temperature of 120 ℃ and curing time of 1 h. Organosilicone coatings were coated on PC, PET film and sticky PET film. The properties of anti-fogging, abrasion-resistant, transparent, adhesive and anti-cracked were good, and the film is uniform. The pencil hardness of film is 3H-4H. The contact angle is 10° or so.