水力脉动冲击钻井工具初步研究与试验

掘力脉动冲击钻井是将水力脉冲、机械冲击振动结合为一体提高钻井速度的一种方法，介绍了辽河油田研制的脉动冲击钻井工具的结构、工作原理及现场试验情况。在潜山混合花岗岩、砂岩，硬脆性泥岩等不同地层的现场试验表明：水力脉动工具工作平稳，未出现蹩跳钻现象，也没有出现脱、落、断、掉等问题，主体安全性、可靠性较好；在潜山混舍花岗岩、砂岩、硬脆性泥岩地层机械钻速提高幅度较大，但在部分泥岩地层效果不佳。试验中发现密封圈耐温性差、脉冲腔易磨损等问题，并据此提出了水力脉动冲击工具的下一步研究方向。     

数值试井在白6-2井测试资料分析评价中的应用

数值试井是在近来发展的一项新的试井解释技术，具有处理非均质，复杂边界油气藏问题的优点，弥补了常规解析试井技术的不足。运用数值试井解释技术，结合动、静态资料，通过对白6-1断块白6-2井测试资料的综合分析评价，确定了储层渗流参数，落实了该气藏的边界情况，为该断块下一步开发提供可靠依据。     

健康测试仪中液晶显示的设计和实现

介绍健康测试仪中的液晶显示技术。给出了该测试仪中液晶显示器的设计、液晶驱动芯片的选择、与控制器的硬件接口和部分驱动子程序。     

复合材料手动扫描超声特征成像检测

研究了复合材料手动扫描超声特征成像检测，通过对超声检测信号的全波列采集与处理，实现了A，B，C扫描成像；相位特征成像；当量特征成像；超声层析技术和超声频谱分析技术。该系统已经在复合材料的检测上得到了良好的应用。     

基于排队模型的软件性能测试框架研究

基于排队模型的仿真建模技术，提出了一种新的性能测试框架。针对该框架，提出了一种仿真模型参数估计算法。从而能在少量真实测试数据的基础上，根据业务需求产生大量具有代表性的仿真数据。该框架在北京市政交通一卡通工程总中心结算系统性能测试中得到了应用。     

不稳定试井解释常见问题分析

通过分析以往不稳定试井解释资料,对试井解释中经常出现的问题进行总结,杜绝此类错误再次发生.建议在解释时,综合考虑其它资料信息,减少主观臆断,以期得到准确解.     

Signal Integrity: Fault Modeling and Testing in High-Speed SoCs

As we approach 100 nm technology the interconnect issues are becoming one of the main concerns in the testing of gigahertz system-on-chips. Voltage distortion (noise) and delay violations (skew) contribute to the signal integrity loss and ultimately functional error, performance degradation and reliability problems. In this paper, we first define a model for integrity faults on the high-speed interconnects. Then, we present a BIST-based test methodology that includes two special cells to detect and measure noise and skew occurring on the interconnects of the gigahertz system-on-chips. Using an inexpensive test architecture the integrity information accumulated by these special cells can be scanned out for final test and reliability analysis.     

Long multifilament Bi-2223 Ag-sheathed superconducting tapes and solenoids

Multifilament Ag-sheathed BiPbSrCaCuO (2223) superconducting tapes containing 49 filaments were fabricated by the powder-in-tube route and the roll-anneal process. The transport critical current densityJ _c was 1.3×10⁴ A cm^–2 at 77 K and 7×10⁴ A cm^–2 at 4.2 K in self-field. A 12-m-long tape was used to construct superconducting solenoids (50, 28, and 14 mm internal diameters) generating dc fields 380–1070 G at 4.2 K. Measurements of the variation ofJ _c with field (0–1.6 T) and bend strain (0–5%) are used to explain the performance of the solenoids. The critical bend strain of tapes was about 1.5%.     

The relative permeability of concrete using nitrogen gas

A modified version of a test, originally proposed by BRE (UK), was used to assess relative permeability to nitrogen gas of concretes cured in various ways. Three simple parameters from test plots clearly showed the effects of duration of water curing, followed by drying to constant mass at 50°C; test specimen moisture content was dominant and drying at 105°C reduced differences between concretes of very different quality. Convincing evidence was not found of differences between upper and lower ‘halves’ of cylinders nor between cast and cored ones.     

衍射法细丝直径的精密测量

分析了激光衍射法测量细丝直径技术中影响精度的几个主要因素，研究了一种微弱衍射条纹的精密处理及识别技术，有效地提高了测量精度，实测结果表明，文中讨论的技术能在１０￣５０μｍ的范围内实现正负０．１μｍ的重复精度，分辨力优于０．０１μｍ。