螺杆泵采油工艺技术在埕岛油田的应用研究

针对埕岛油田的储积层特征和螺杆泵采油工艺的技术特点,开展了一系列的理论与实际的配套研究,从优化泵的设计,杆、管的配套,到采用软启、缓停等技术,逐步完善了螺杆泵采油工艺技术。该技术在胜利浅海埕岛油田的应用中取得了良好的效果,使螺杆泵平均检泵周期达到1172d,是国外同类螺杆泵的3倍以上。     

对异常高压层厚度划分问题的探讨

通过对喇嘛甸油田800多口聚合物井、更新井的厚度划分及对15口井的异常高压层处理的实例，根据异常高压层在电测曲线上的反映特征，准确地将异常高压层识别出来，并采用本井上下相似层对比法、周围邻井砂体预测分析法、新老标准相结合法等综合分析判断方法，正确地划分异常高压层的厚度，将漏划或少划的厚度补划上。给后续的油层对比、水淹层解释、射孔方案的编制及动态、开发综合方案的调整提供准确的基础数据，并为套管损坏的防治、新钻井的异常高压层厚度解释提供了可借鉴的依据。     

二级采油技术在文南油田的应用

为解决文南油田高油气比井泵效低的问题，引进了二级采油技术。该技术采用特殊的二级采油工具，充分利用油井高油气比的特点，从而达到提高泵效的目的。文南油田30口井的现场试验表明，该技术应用后，平均单井泵效提高6%以上，平均单井视动液面下降739m，累积增油7560t。     

Thermal degradation of cinnamoylated poly(vinyl alcohol)

Thermogravimetry and pyrolysis in combination with gas chromatography and infrared spectroscopy were the experimental techniques applied to the thermal degradation of cinnamoylated poly(vinyl alcohol) samples, constituted from vinyl alcohol-vinyl cinnamate photocrosslinkable copolymers. The thermal decomposition products include gases, liquids and solids. The gases are formed from saturated and unsaturated volatile hydrocarbons C₁? C₄, carbon monoxide and carbon dioxide. The liquid fraction includes aromatic hydrocarbons and some oxygenated organic compounds. The solid product identified in the greatest amount was cinnamic acid. The content in the thermal decomposition products varies considerably both with copolymer composition and temperature.     

通信用VRLA蓄电池可靠性指标及计算探讨

在说明通信局（站）电源系统对VRLA蓄电池组可靠性要求的基础上，阐述了为了达到电信设备的电压、电流需求，通过串联或串并联构成电池组的单体VRLA蓄电池应达到的可靠性指标。在确定单体VRLA蓄电池应达到的可靠性指标。在确定单体VRLA蓄电池可靠性参数时，可通过现场使用调查或加速寿命试验的办法来求得。在单体VRLA蓄电池可靠性指标过低的情况下，可通过多种冗余连接方式来提高电池组的可靠性。     

动态聚焦电子枪的模拟与实验研究

动态聚焦技术是为了满足大屏幕高分辨率彩色显像管及高分辨率彩色显示管的发展需求而产生的一项新技术。在本文中，作者首先提出了一种动态聚焦电子枪结构，进行了数值计算与分析，制作了动态聚焦电子枪并装管实验。通过对实验样管的测试与分析。证实该枪性能良好，动态聚集效果明显。     

GENERALIZED INVERSE GROUP OF SIGNAL AND ITS IMPLEMENTATION WITH NEURAL NETWORKS

A new concept, the generalized inverse group (GIG) of signal, is firstly proposed and its properties, leaking coefficients and implementation with neural networks are presented. Theoretical analysis and computational simulation have shown that (1) there is a group of finite length of generalized inverse signals for any given finite signal, which forms the GIG; (2) each inverse group has different leaking coefficients, thus different abnormal states; (3) each GIG can be implemented by a grouped and improved single-layer perceptron which appears with fast convergence. When used in deconvolution, the proposed GIG can form a new parallel finite length of filtering deconvolution method. On off-line processing, the computational time is reduced to O(N) from O(N2). And the less the leaking coefficient is, the more reliable the deconvolution will be.     

YAG激光打标机光笔中会聚出纤光的光学系统

智能化大幅面激光打标机中的光笔,采用本文叙述的光学系统会聚多模石英光纤出射的大功率YAG激光,通常能以小于0.2mm的线宽长时间连续地在工件上刻划,仔细调焦后线宽达0.1mm;手持此光笔可进行人工刻写、画及焊接电子元件等.     

群时延精确设计的全差分四阶Bessel滤波器

采用MOS管有源电阻,提出了一种全差分R-MOSFET-C四阶Bessel有源低通滤波器,.通过调节工作于亚阈值区的CMOS管的沟道导纳补偿电阻值的大小,能抵消集成电路制造工艺中电阻值的一致偏差,实现Bessel有源滤波器群时延的精确设计.根据无源滤波器的状态方程完成有源滤波器的综合,应用3.3V,0.5μm CMOS工艺完成了群时延大小为0.75μs的四阶Bessel低通滤波器的管极计算机仿真,仿真结果表明所提电路正确有效,适于全集成.