水平井钻遇储层产能预测测井评价方法

储层产能预测是储层评价的重要指标之一.水平井测井解释主要通过常规测井曲线与导眼井常规测井曲线对比校正技术和水平井井眼轨迹与地层穿越关系进行的,尽管该方法能给开发工程师提供大量井眼轨迹与地层关系的信息,但却很难指出水平井钻遇储层的生产油气能力如何,这为油田开发工作带来了困难.以常规测井资料为基础应用敏感性分析和交会图技术划分井剖面地层,得出了储层有效厚度;分析试采数据,统计出了归一化条件下的水平井日产油量,发现二者之间有良好的线性关系,继而建立起DS油田XX油组水平井日产油量与储层有效厚度之间的产能预测模型,为所研究油组油藏描述工作提供了更为可靠的水平井测井解释结论.     

一种利用变压器串并联的开关电源研制

为了提高大容量开关电源的总体性能,提出了变压器串并联技术在开关电源的应用,根据产品规格及设计要求,介绍了开关电源控制电路和主电路的设计,着重介绍了主电路中的变压器串并联技术.据此,不仅使开关电源具有高可靠性,而且使大容量开关电源有了良好的动静态性能,通过实验、测试证实了这一点,为其它大功率电源开发提供依据.     

d类截面受压钢构件稳定承载力的分析比较

对由厚钢板组成的钢受压构件d类截面稳定系数的正确取值进行了分析、比较,指出了钢结构设计规范GB50017-2003中受压构件d类截面稳定系数曲线确定过程中的错误;并通过按不同规范对比设计的算例,探讨了d类截面受压钢构件在不同规范之间稳定承载力的差异.     

不同电参数对CFRC应变敏感性的响应

CFRC具有压敏性，测试方法和测试参数的选择对CFRC的压敏性有一定的影响。采用直流电阻测试法、交流阻抗测试法和电容测试法研究了不同电参数(直流电阻、交流阻抗、电容)对CFRC应变敏感性的响应。实验结果表明：直流电阻和交流阻抗随压力的变化都能反映试样受载变形的全过程：弹性阶段、损伤阶段、破坏阶段；电容随压力的增大而增大；交流阻抗和电容随应变的变化比直流电阻随应变的变化灵敏且稳定。最后对这3种测试方法作了综合评价。     

高温后方钢管混凝土双向偏压构件试验

为了更好地对高温作用后钢管混凝土的残余力学性能进行评估(特别是双向偏心构件的力学性能),为制订火灾作用后钢管混凝土的残余力学性能鉴定标准积累素材.笔者对恒高温作用后方钢管混凝土双向偏压构件的力学性能进行了15个试件的试验研究,设计了专用的双向偏心受压加载装置,并对影响构件残余力学性能的因素进行了试验分析.研究发现,高温后方钢管混凝土双向偏压构件仍有较高承载力,较好的延性,影响承载力的主要因素是温度.     

Measurement of the Dielectric Parameters of a Ferroelectric Material by a Controlled Discharge Method

It is proposed to determine the dielectric parameters of a ferroelectric material from the form of the voltage after a short discharge of a charged sample.     

High-Temperature Strength of Niobium Alloy 5VMTs with a Silicide-Ceramic Coating. Part 1. Short-Term Strength Characteristics

Experimental data on the short-term strength and plasticity of niobium alloy 5VMTs of the system Nb–W–Mo–Zr in its initial state, after annealing, and with a silicide-ceramic protective coating obtained by testing in vacuum, an inert atmosphere, and in air in the temperature range from 290 to 2270 K are analyzed. The process of microcrack initiation and propagation in the protective coating and matrix is investigated in high-temperature static tension. The limiting plastic strain values have been established at which the composite retains its load-carrying capacity in high- temperature aggressive and oxidizing gas atmospheres.     

Anomalous Excess Heat Capacities of Ethanol + Alkane Mixtures

A thermodynamic study at atmospheric pressure on the ethanol + n-dodecane and ethanol + n-tridecane binary systems near their liquid-liquid critical points has been carried out. To this end, densities and speeds of sound were determined in the temperature range from 288.15 to 308.15 K, whereas differential scanning calorimetry was used to obtain isobaric heat capacities per unit volume from 288.15 to 303.15 K as well as liquid-liquid equilibrium curves. All these results for the mentioned properties were obtained over the complete composition range. They were used to obtain molar volumes, isentropic compressibilities, isobaric thermal expansivities, isothermal compressibilities, isochoric heat capacities, and the excess quantities of all these properties. An untypical behavior of the excess heat capacities at the lowest measuring temperatures resulting from the critical behavior of the isobaric heat capacity is observed. No clear anomalies for the excess volumetric properties are detected.     

介质阻挡电晕放电去除二氧化硫的研究

工频高压下线管结构反应器可能出现局部电晕放电及气隙中稳定阻挡放电。根据V-qLissajous图形计算了放电功率。随外施电压上升,放电由电晕放电进入稳定阻挡放电,放电电流幅值达数mA,放电功率密度为数百mW·cm-3,去除SO2的能量效率可达30g/(kW·h)。实验表明,稳定阻挡放电时,较高的电压及较大的放电空间可提高能量利用率。     

SAP2000n在静力弹塑性分析中的应用

对SAP2000n程序中静力弹塑性分析的基本原理及实现步骤进行分析,并结合中国规范对其中一些参数加以调整.最后用程序对一个四层框架进行静力弹塑性分析和抗震性能评价.结果表明:该方法可从层间位移角、塑性铰分布及变形等方面对结构进行综合的量化评价,并能揭示出结构在罕遇地震作用下的薄弱环节,是实现基于性能设计的有效方法.