EU wrong-footed as Russia moves ahead with new export pipelines

Whilst the European Union (EU) tries to find new sources of gas imports outside Russia, Moscow is pre-empting any such moves to lessen the EU's dependence on Russia by announcing new plans to bring gas to Central and Western Europe. A major new gas export line has been brought nearer by an agreement to route the South Stream gas pipeline via Serbia, whilst another export project has just been agreed under which Russia will provide a conduit to Europe for gas from Kazakhstan and Turkmenistan.     

西方承认:俄石油成因研究领先30年

<正>《世纪战争:英美石油政治与新世界秩序》的作者威廉·英格达尔最近介绍分析了俄罗斯非生物成因生油理论,认为如果俄罗斯拥有西方地质学所不具备的科学知识,那么俄罗斯将握有地缘政治制胜王牌。石油顶峰的谬误与新理论的成功英格达尔指出,石油顶峰理论是马里恩·金·哈伯特(Marion King Hubbert)于1956年在一篇论文中提出来的,他曾根据"哈伯特钟型曲线"预测,美     

斯伦贝谢推出新一代Scope随钻服务

在今年召开的一系列油气会议上,斯伦贝谢公司推介了其新一代Scope随钻服务。该项服务由三部分构成——Ecoscope多功能随钻测井、StethoScope随钻地层压力测量和TeleScope随钻高速遥测。Scope的数据传输率提高了3倍,还首次在随钻测井中用脉冲中子发生器取代了传统的AmBe源,增强了作业的安全性.斯伦贝谢公司宣称,新一代随钻服务可以极大地改善钻井性能并优化井眼轨迹,增加油气产量。     

新型注水管内衬材料的应用

在油田采油的中后期,常采用注水技术,通常注水开发前期,油田常采用普通碳钢/不锈钢复合管作为注水管线,并采用污水净化回注和掺淡水混注等技术减少环境污染,但这种防腐技术只能延缓腐蚀的速度,并不能从根本上改变腐蚀的状况。实际上经过处理后的污水仍有含油和硫酸盐还原菌不达标等现象,导致注水管线和设备出现腐蚀和结垢。对延长油田某注水站的注水管使用情况调查得知,其碳钢/不锈钢复合管有严重的腐蚀和结垢现象。对复合管体内垢样进行分析,总结出结垢的原因并提出解决办法,即优选新型B15合金作为复合管内衬材料。现场使用新型B15合金衬管取得良好的效果,值得推广应用。     

Filling pipelines with liquid cryogenic agent

Translated from Khimicheskoe i Neftyanoe Mashinostroenie, No. 4, pp. 19–21, April, 1989.     

新型密封钢圈在注汽活动管线连接中的应用

在活动管线连接中采用新研制的密封钢圈,可减少密封钢圈直接与管线卡箍接触造成的密封工作面损伤,从而增强密封性能,有效降低管线漏失现象的发生,确保注汽质量。     

Pigging simulation for horizontal gas-condensate pipelines with low-liquid loading

Liquid condensation in natural gas transmission pipelines commonly occurs due to the thermodynamic and hydrodynamic imperatives. Condensation subjects the gas pipeline to two phase transport, which dramatically affects their delivery ability and operational modality and the associated peripheral facilities. It is therefore imperative for the pigging simulation in gas-condensate flowlines to be taken into consideration in their design. Periodic pigging helps keep the pipeline free of liquid, reducing the overall pressure drop, and thereby increasing the pipeline flow efficiency. A new simplified pigging model has been developed for predicting the pigging operation in gas-condensate horizontal pipelines with low liquid-loading, which couples the phase behavior model with the hydro-thermodynamic model. The comparison of the calculating results with those of the two-phase transient computational code OLGA (with a dynamic, one-dimensional, extended two-fluid model), indicates the new pigging model has a good precision and high speed in calculation. The model also contains the capability of pig-tracking and slug-length-increasing model, which can be suitable for engineering design.     

A new hydrate deposition prediction model considering hydrate shedding and decomposition in horizontal gas-dominated pipelines

Hydrate formation and blockage in gas-dominated pipelines has always been an important issue in research of pipeline flow assurance. In this work, a novel hydrate deposition prediction model considering hydrate shedding and decomposition for gas-dominated pipeline is proposed and solved by the finite difference method and iterative technique. Finally, the model has been applied in the existing gas-dominated pipeline experiments. The results show that: (a) the predicted results are in good agreement with the experimental data. (b) when the maximum degree of pipeline blockage reaches the blockage limit, the hydrate layer will shear off, and the layer that has been sheared tends to fall off twice. (c) when the pressure is the same, the higher the negative subcooling (N-subcooling), the faster the hydrate decomposition rate, and when the N-subcooling is similar to the subcooling, the decomposition with the same hydrate volume is faster than the formation. (d) increasing the hydrate shedding amount or increasing the hydrate decomposition rate can be used to deal with hydrate deposition and blockage accidents in natural gas pipelines.     

天然气管道连头程序的探讨

文章基于西气东输某分输站站外管道改线连头中进行的一级动火连头作业工程实例,介绍了在天然气站场管道改造施工作业中的动火连头的主要施工工序,针对一级动火的危险性和重要性,制定了一整套安全可靠的动火头方案,为石油天然气工业的动火连头作业提供了技术参考。     

海底单重保温管道层间轴向剪应力计算方法研究

针对我国近海边际油气田多为高凝、高黏原油的特点,基于国内制管工艺和能力,借鉴国外海洋油气田开发工程成功应用单重保温管的经验,从力的传递和变形协调条件出发,对单重保温管层间轴向剪应力计算分析方法进行了探讨,提出了一套适合单重保温管设计计算的新方法,并提供了计算算例。