天然气

Study on adsorption in porous media of reservoir is very important for phase equilibrium calculation of condensate gas and the right way of insight at the gas or condensate gas reservoir.In this paper,experiments for measuring absolute adsorption of N2, CO2 and natural gas on 8 different artificial cores using an accurate porosimeter and an precise chromatographic instrument under room temperature (283～292°K) and low pressure (0.167～0.3MPa) have been studied.From these experiments,the following results can be obtained:i.

利用高精度孔隙度测定仪和气相色谱分析仪，采用恒体积法，测定了室温(283～292K)、低压(0.167～0.3MPa)下N2、CO2和天然气在8个不同的岩心孔隙内表面的吸附量，对于天然气，还测定了吸附前后自由气体的摩尔组成，被吸附气体的摩尔组成和天然气各组分的相对吸附量。

The evolution degree of sapropel type Kerogen and humic type Kerogen may be defined by the feature of gas components.But this method is not applicable for mixing gas source material including sapropel type Kerogen and humic type Kerogen.

依据天然气组分特征可以判别煤型气和油型气这两种极端类型天然气的母质转化程度，但对于既有煤型气又有油型气或介于煤型气和油型气之间的天然气则不适用。

After the reserves of unassociated gas being increased fast, it is asked to adjust the main direction of natural gas development to deepen exploration of natural gas in the two basins in the central part and the regions (eg.the areas of northern and southern Tianshan mountains) near pipelines in China.It is suggested that tight gas reservoirs should be enhanced to explore,e...

在气层气储量快速增长后，应当调整我国天然气勘探主攻方向：深化中部两盆地和管线附近的天然气勘探；加强致密气藏勘探，特别是滚动勘探开发工作；对海上天然气应加大投入，除南海北部和东海外，还要注意渤中坳陷轻质油分布区的气层气勘探，还要按隆起和坳陷的不同情况开拓黄海这个战略后备区；东部中小气田经济价值高，作为地下气库应发挥更大作用。

Liquefied Natural Gas, as a type of application, has obvious advantage in the storage and transportation of natural gas.

液化天然气作为天然气的一种应用形式，在天然气的储存和运输方面都具有十分明显的优越性。

The present situation of production and trade of liquefied natural gasin the Middle East is described first.

阐述了中东液化天然气的生产和贸易现状，分析了影响中东液化天然气贸易的因素，并对中东液化天然气的出口和贸易前景进行了展

The liquefaction of natural gas is now a new and advanced technology. But there are big difference in technology of natural gas liquefying between our country and developing countries.

我国天然气液化技术是一项新兴的技术，正在迅速发展，但与国外天然气液化技术相比，国内天然气液化技术才刚刚起步，差距较大。

Advertisement competition decision making analysis for double oligarchies monopolization market;2. By using the current microeconomic theories and analyzing methods, the paper approached the causes of monopolization in natural gas industry, and also analyzed the market structure and pricing system under the conditions of monopolization .

围绕我国天然气工业发展初期的市场发育不全、定价机制不能反映供需要求和价格扭曲等问题，运用现代微观经济理论和分析方法，系统地探讨了天然气工业形成垄断的原因，并对垄断环境下的天然气市场特征及价格机制进行研究。

Naftogaz said it had enough gas in storage facilities to withstand the cuts for about another two weeks. But a spokesman said that if the weather worsened - or if the cutbacks deepened - Naftogaz would raise the issue of reducing transit of gas through Ukraine. If we are being treated in such a way with ultimatums and Europe is not reacting, then we have no choice.

& 俄罗斯天然气表示，它已够气储存设施，以抵御削减约两周，但发言人说，如果天气恶化-或者如果削减深化-俄罗斯天然气将提高的问题，减少过境的天然气通过乌克兰，&如果我们正在接受治疗，在这样一个同最后通牒和欧洲是没有反应的话，我们没有别的选择。

Secondly, study on bleaching of sandstone based on field characteristics, petrography, geochemistry and compared with other sandstone related, combined with geological setting of gas seepage in the area, reveals that natural gas leakage is responsible for bleaching of the sandstone on top of Yan\'an formation. The bleaching resulted from interaction between the reductive fluid and the rock. At the same time the bleaching suggests that the northeast of basin has experienced large scale gas seepage.

在此基础上，通过漂白砂岩野外露头地质特征、岩石学、地球化学以及相关砂岩的对比研究，结合研究区天然气逸散的地质背景，揭示砂岩漂白现象为上古生界天然气逸散过程中，还原性流体与岩石作用的结果，同时也表明其指示了天然气的大规模逸散作用。

Secondly, study on bleaching of sandstone based on field characteristics, petrography, geochemistry and compared with other sandstone related, combined with geological setting of gas seepage in the area, reveals that natural gas leakage is responsible for bleaching of the sandstone on top of Yanan formation. The bleaching resulted from interaction between the reductive fluid and the rock. At the same time the bleaching suggests that the northeast of basin has experienced large scale gas seepage.

在此基础上，通过漂白砂岩野外露头地质特征、岩石学、地球化学以及相关砂岩的对比研究，结合研究区天然气逸散的地质背景，揭示砂岩漂白现象为上古生界天然气逸散过程中，还原性流体与岩石作用的结果，同时也表明其指示了天然气的大规模逸散作用。

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。