A calculation method for bottom-hole pressure in CO2 gas well is established according to energy balance equation for vertical conduit flow by using the method of calculating CO2 physical properties(density,Z-factor and viscosity) and combining with the unique phase characteristics of CO2 in well bore.
根据垂直管流的能量平衡方程,运用CO2物性参数(密度,偏差因子及粘度等)的计算方法,结合CO2独特的井筒相态特征,得到了CO2气井的井底压力计算方法,对某CO2实例井的井筒压力分布进行了预测,预测结果较好。
The paper introduced the magnetic core design of HVDC transformer and smoothing reactor, HVDC winding design, wire terminals (converter valve winding), and the design scheme of DC bushing.
介绍了高压直流输电(HVDC)变压器及平波电抗器的磁芯设计、高压直流绕组设计、导线引出端(换流阀绕组)、直流套管设计方案,举例说明了高压换流变压器的制造过程与传统变压器制造过程的不同。
For acquiring present formation pressure of gas well in time and providing a basis for geologic study and interpretation, dynamic analysis and reservoir potential calculation, a facility method to calculate formation pressure of gas well is presented on base of systemic well test principle of gas well and vertical pipe flowing theory.
为及时得到气井当前地层压力,为气藏地质研究和评价、动态分析、储量计算等提供依据,基于气井系统试井原理和垂直管流动理论,提出了计算气井地层压力的简易方法。
Electric Field Analysis and Research on the Insulation Problems of a Converter Transformer HVDC Bushing;
换流变压器高压直流套管电场分析与绝缘问题研究
Investigation on Dielectric Properties of Epoxy/Crepe Paper Composites for Ultra-high Voltage DC Bushing
特高压直流套管用环氧树脂/皱纹纸复合绝缘体系介电性能的研究
Analysis of steady-state characteristics of casing once-through steam generator
套管式直流蒸汽发生器稳态特性分析
Numerical Analysis of Mixed Convective Heat Transfer in Vertical Concentric Cylinders Filled with a Porous Medium;
竖直同心套管内多孔介质中复合对流传热的数值研究
straight through type armored rotameter
直通式带护套转子流量计
thyristor DC speed regulator
闸流晶体管直流调速器
Bulkhead union--Assembly
GB/T3748.1-1983卡套式隔壁直通管接头
Straight thread connector--Assembly
GB/T3733.1-1983卡套式端直通管接头
Straight thread long connector--Assembly
GB/T3735.1-1983卡套式端直通长管接头
Union for butt joints--Assembly
GB/T3756.1-1983卡套式对接直通管接头
Straight thread elbow--Assembly
GB/T3738.1-1983卡套式端直角管接头
Union elbow--Assembly
GB/T3740.1-1983卡套式直角管接头
Adjustable elbow--Assembly
GB/T3752.1-1983卡套式组合直角管接头
Bulkhead union elbow--Assembly
GB/T3749.1-1983卡套式隔壁直角管接头
Male connector--Assembly
GB/T3734.1-1983卡套式锥螺纹直通管接头
Male elbow for butt joints--Assembly
GB/T3758.1-1983卡套式锥螺纹对接直角管接头
Male elbow--Assembly
GB/T3739.1-1983卡套式锥螺纹直角管接头
Male run tee--Assembly
GB/T3744.1-1983卡套式锥螺纹直角三通管接头