Research ＆ Development of Grade X70 LSAW Steel Pipes for West-East Gas Pipeline

In this article the research and development of X70 large diameter longitudinal seam submerged arc welded (LSAW) steel pipes for West-East Gas Transportation Pipeline project (WEGTP) in China are introduced, including the key technique, fabrication of pipe production line, mass production and the latest progress of LSAW steel pipe technique.     

Study and Application of Internal Coating Technique to Drag Reduction of the Trunk Pipeline for the West-East Gas Pipeline

Coverage layer coated in the internal wall of pipeline enables the friction drag to be reduced, the throughput and the gas transmission efficiency to be increased, the frequency of pigging and the number of the intermediate compressor station to be reduced, and the power consumption of the compressor to be decreased etc. The drag reduction is a high advanced scientific technique with outstanding economical benefit. The study and application of internal coating technique for drag reduction of 4000km trunk pipeline in West-East gas transmission pipeline (WEGTP) project are described, in which the main points are the drag reduction principle, coating process and the indoor study of this technique with own-decided knowledge property right at home.     

忠武输气管道地质灾害的特征及防治对策

忠武输气管道全长1375km,沿线自然地理和地质环境复杂多样,主要地质灾害有滑坡、危岩、泥石流等类型且具有明显的地域分布。论文在分析调查资料的基础上对不同地质灾害的特征进行了研究,并结合地质灾害对管道的危害性提出了防治对策。     

GPS测量及GPS—RTK技术在工程测量中的应用——以晋城—长治煤层气输气管道工程线路测量及中线放样为例

以实际工程为例,介绍了GPS—RTK技术在工程测量中的应用,总结了几点体会。     

GPS技术在长距离输气管道测量中的应用

<正>一、GPS技术使用概况随着技术的发展,GPS的作业模式已从静态测量、快速静态测量、后处理高精度动态测量,发展到动态初始化(OTF)厘米级实时RTK测量作业。GPS可以高精度并快速地测定各级控制点的坐标,应用RTK技术,甚至可以不布设各级控制点,仅依据一定数量的基准控制点,便可以高精度并快速地测定地形点、地物点的坐     

对广电数字化运动的几点看法——兼谈对信息时代的数字技术标准化意义的反思

The West-East Gas Transportation Pipeline (WEGTP) is a strategic project for the energy source transport, which is about 3900km long. The remote sensing technique has the unique superiority to obtain the geographic information. The remote sensing technique is used in WEGTP to interpret comprehensively the information of geology, landform and humane geography along the route of pipeline, and to update the topographic map along the route of Zhengzhou-Shanghai section pipeline, and to interpret finely the crossing point of the Nanjing Changjiang river crossing section. Through the overlap of TM image and the DEM, the complicated landform information can be grasped by the three dimensional flight over the section of complicated geography. The application achievements are managed with RS-GIS service system.     

生产低硫低烯烃汽油的RIDOS技术

With the application of new techniques, materials and technologies in West-East Gas Transportation Pipeline (WEGTP) project, the design concept of domestic pipeline industrial construction has been updated, speeding up the development and improvement of the strength as a whole in aspects of smelting industry, pipe fabrication, pipeline construction and equipment manufacture, making China‘s pipeline industry catch up with the trend of development of the world advanced level.     

盐穴地下储气库在我国的发展动力和趋势

本文从天然气产业发展的角度，分析了天然气生产、运输和市场对大型地下储气库存储设施的需求动力，根据不同类型地下储气库的运行特点，分析了未来10至20年盐穴地下储气库在我国的发展趋势。通过分析，我们能很清楚的看到大容量和高注采速率的盐穴地下储气库在我国南方地区的需求将会持续增加，但由于其建设周期较长，与当地盐化工产业的发展紧密相关，一般应提前3至5年先于管道工程建设，才能与管道系统的投产和运行紧密衔接，保证管道系统的调峰和安全运行，提高管道系统的运行效率和经济效益。     

输气管道穿河段水工保护工程埋深问题探讨

以"涩宁兰输气管道巴音河穿越段水工保护工程"为实例,采用管道河流穿越工程中广泛应用的冲刷经验公式,对该穿越段的冲刷深度进行计算,通过对比分析各计算结果的合理性与可靠性,提出了符合实际情况的水工保护工程基础埋置深度,为油气输送管道穿越段水工保护工程设计与工程基础埋深的确定提供了技术参考和较可靠的科学依据.     

输气管道非稳态优化运行技术研究进展

 天然气在管道系统中流动时,需要依靠压缩机组提供能量,压缩机组的能耗很大,一般可占所输送天然气的3%~5%,因此非常有必要研究输气管道的优化运行问题。本文论述了输气管道系统非稳态优化运行技术的研究现状及发展趋势,总结了国内外研究的典型输气管道非稳态优化运行问题以及采用的数学模型,包括决策变量、目标函数和约束条件等。分析了输气管道非稳态优化运行数学模型的求解难点、主要算法、典型算例及其应用效果。