天然气

Hydrate of natural gas is an effective,safe way for storage and transportation of natural gas.

天然气水合物作为一种高效、安全的天然气储存和运输的方式，其实用性很大程度上取决于水合物的含气率和气体水合物的生成速率。

Corporation 5 million tons of gas hydrocyanic acid glycine system, the new project is the use of natural gas production of new technology industrialization projects of glycine, the scale in the industry are among the biggest.

公司5 万吨天然气氢氰酸制甘氨酸新项目是用天然气新工艺生产甘氨酸的产业化项目，规模在行业内属于最大。

According to the real situation of gas-field exploitation, the hydrate generating system is simulated by the actual conditions as much as possible. Taking some gas field as example, with JEFRI sapphire hydrate device, the liquid systems of gas hydrate generating with frothing agent, electrolyte and condensate oil are studied by experiments and compared with the pure water system. The variation of critical conditions to form gas hydrate and its influence on the effects of inhibiter are discussed for the 3 hydrate systems, which provides the basis to prevent hydrate generation in the fields.

针对气田生产的实际情况，文章尽可能接近现场水合物生成体系，以某气田为例，利用JEFRI蓝宝石水合物装置，通过实验分别研究了含泡排剂、含电解质和含凝析油的天然气水合物生成液体体系，并与纯水体系进行对比，探讨了在这3个体系中天然气水合物形成的临界条件的变化以及对抑制剂抑制效果的影响，从而为水合物的现场防治提供了依据。

The conclusions can be drawn through numerical simulation: The hydrate-forming region becomes small with increasing circulation rate and inhibiter concentration, and it is possible to make the hydrate-forming region away from sea floor by increasing circulation rate and inhibiter concentration, thus preventing blowout preventer lines from hydrate plugging; the decrease in gas volume fraction in the annulus due to hydrate formation reduces pit gain, which can delay the detection of well kick; the possibility of hydrate presence at a relatively low gas production rate is much greater than that at a relatively higher production rate; the bottom hole pressure is affected little by hydrate phase transition, and it is allowable not to consider hydrate phase transition when the bottom hole pressure is calculated; shut-in casing pressure cann't truly reflect gas kick due to hydrate formation and the situation is getting worse with time

模拟计算结果表明：溢流期间，天然气水合物的生成区域会随着循环流量的增大或抑制剂浓度的提高而减小，可通过增大流量和抑制剂浓度使水合物的生成区域脱离海底，减小防喷器管线被堵塞的危险；水合物的生成使环空中气体体积分数降低，泥浆池增量减小，给溢流检测带来延迟；当检测到有气侵发生时，水合物藏分解速率比较小时，井筒中生成水合物的可能性要比分解速率大的情况下更为严重；水合物相变对井底压力的影响较小，在工程中计算井底压力时可以忽略；由于天然气水合物的生成使得关井套压值不能真实反应气侵情况，而且随着时间的增加情况会更加严重。

There are some distinct geochemical differences between the organic and inorganic gases, mainly in chemical composition and the composition of isotopes.

无机成因天然气与生物成因天然气在地球化学特徵上存在显著的差异，主要表现在化学成分和同位素组成特徵。

With maturing of CNG vehicle technology and perfection of networked construction of gas fueling station,the opportunity to realize interurban regionalization running of CNG vehicle s already has arrived.

目前我国 CNG汽车仅仅局限于城市中的车辆，随着天然气汽车技术的成熟和加气站网络化建设的完善，实现天然气汽车城市间的区域化运行的时机已经到来。

The article presents engineering design options for expanding natural gas-synthetic ammonia units using this new technology as well as production schemes for producing ammonia and urea as a byproduct using the 3×1 stage natural gas reforming and one-step isopiestic transformation method.

介绍了用该新工艺对我国天然气生产合成氨装置进行扩建改造的工程设计方案，以及天然气三－段转化等压一次变换制氨联产尿素的生产设计方案。

The component and carbon isotope of natural gas are mainly controlled by the type of organic matter and maturity.

天然气的组分和碳同位素主要受母质类型和成熟度双重因素的控制，这是我们研究天然气的基础。

Abstruct : Thermophysical property is essential data in liquefaction process design, research and operation of natural gas.

天然气热物性是天然气液化流程的设计、研究和运行操作中的基础数据。

It is believed that the efficiency and the value of the small scale natural gas liquefier will be improved by the development of the cryogenic theory and technology for it and it should be centered with domestic, own intellectual property and commercial when developed and made small-scale natural gas liquefier.

在进行小型天然气液化装置的研制时应立足于使设计的小型天然气液化装置国产化，取得自主知识产权，力求形成商业化规模。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。