一种新型注入剖面组合测井仪及其应用

为了提高注入剖面测井的准确性，研制了一种新型注入剖面组合测井仪。该仪器由流量处理单元、伽马处理单元、井温处理单元、磁性定位处理单元、调制式传输、电源电路六部分组成。一次下井可同时测取流量、伽马、井温、磁性定位四组参数。具有测取资料精度高、单芯电缆传输、流量可单点测量也可连续测量以厦现场监测和维修方便等特点。     

加油站油品防盗的措施

为防止加油站油品被盗，应采取加强夜间值班管理、加强油品的计量管理和加强安全管理的高科技建设三项措施。     

A new polysilicon CMOS self-aligned double-gate TFT technology

In this paper, a new polysilicon CMOS self-aligned double-gate thin-film transistor (SA-DG TFT) technology is proposed and experimentally demonstrated. The self-alignment between the top- and bottom-gate is realized by a backlight exposure technique. The structure has an ultrathin channel region (300 /spl Aring/) and a thick source/drain region. Experimental results show that this technology provides excellent current saturation due to a combination of the effective reduction in the drain field and the full depletion of the ultrathin channel. Moreover, for n-channel devices, the SA-DG TFT has a 4.2 times higher on-current (V/sub gs/=20V) as compared to the conventional single-gate TFT. Whereas for the p-channel devices, the SADG TFT has a 3.6 times higher on-current (V/sub gs/=-20V) compared to the conventional single-gate device.     

A Study on NMR and GC/MS Spectra of the Isomers of Linear Hexyl Naphthalene

The GC/MS and NMR analysis of the reaction products of naphthalene with 1-bromohexane were reported. The products obtained were suggested to have six isomers of linear hexylnaphthalene and the structure of each isomer was determined by GC/MS and NMR spectra. For the first time, the unique chemical shift data were obtained. The content of each isomer calculated by ¹H NMR and ¹³C NMR spectra was consistent with that by GC/MS spectra, which confirmed the accuracy of NMR data.     

Convective Heat Transfer to Canned Liquid Foods in a Steritort

Heat transfer coefficients to canned Newtonian and non-Newtonian liquids were determined in a Steritort. Dimensionless correlations of the form, NU_D= A₁ (Gr P_I)^A2+ A₃ (ReD Pr L/D)^A4 correlated well the data. The diameter of the can was the characteristic dimension and the properties of each fluid were evaluated at the average of its initial and final temperatures. The contribution of free convection was significant (44 - 97%). The data with non-Newtonian fluids were correlated using the generalized Reynolds number (Re_D?), and the Prandtl and the Grashof numbers based on the apparent viscosity in Re_D?. It appears that the mechanism of heat transfer was also changed by conduction in the case of a 0.75% sugar gum solution whose consistency index of the power law model was about 0.9N sⁿ/m² at 6°C.     

Adaptive predictive control algorithm based on Laguerre Functional Model

Laguerre Functional Model has many advantages such as good approximation capability for the variances of system time‐delay, order and other structural parameters, low computational complexity, and the facility of online parameter identification, etc., so this model is suitable for complex industrial process control. A series of successful applications have been gained in linear and non‐linear predictive control fields by the control algorithm based on Laguerre Functional Model, however, former researchers have not systemically brought forward the theoretical analyses of the stability, robustness, and steady‐state performance of this algorithm, which are the keys to guarantee the feasibility of the control algorithm fundamentally. Aimed at this problem, we introduce the principles of the Incremental Mode Linear Laguerre Predictive Control (IMLLPC) algorithm, and then systemically propose the theoretical analyses and proofs of the stability and robustness of the algorithm, in addition, we also put forward the steady‐state performance analysis. At last, the control performances of this algorithm on two different physical industrial plants are presented in detail, and a number of experimental results validate the feasibility and superiority of IMLLPC algorithm. Copyright © 2005 John Wiley & Sons, Ltd.     

特低渗油藏水平井布井方式研究

本文以西峰油田董志区长8油藏为例，运用数值模拟技术，研究了水平井组合方式及其井网形式。研究结果表明，水平井是提高特低渗油藏开发效果的有效途径。结合长庆特低渗储层吸水性能好的特点，认为采用直井注水，水平段走向垂直于储层最大主应力方位的水平井采油的井网组合开发效果最佳。