游离气

BSR上方的天然气水合物、方的游离气与天然气再循环和含甲烷的流体流有关。

Gas hydrates above BSRs and free gas beneath BSRs are related with gas recycling and methane-bearing fluid flux .

结果表明，不同天然气水合物饱和度、不同游离气饱和度的各种组合呈现形态相似但反射系数值不同的AVA特征。

The analysis of AVA character of BSR shows that different reflection coefficient values but similar configurations of AVA curves are given for various combinations of different concentrations of gas hydrate and free gas .

运用这种方法，结合海上有利于天然气水合物的E研究区某测线地震资料，尝试估算了BSR界面之上和之下介质中水合物/游离气的含量。

This method is tested with real seismic data , which will favor the research of gas hydrate .

当地层中富含水合物及下伏游离气时，其波形剖面有明显的反映，BSR波形极性与海底反射极性相反，大致代表含水合物层的底界。

BSR is the basement of the gas hydrates , and the polarity of the wavelet of the BSR and seafloor are reverse . If gas hydrates and free gases exist in the strata , the wavelet of the BSR will change .

最后，提出发展和完善OBS地震层析成像技术研究水合物、游离气以及碳氢化合物的深部迁移通道的初步设想和技术方案。这对海洋天然气水合物的勘探有一定的指导作用。

Finally , the paper brought forward the preliminary idea and technical scheme for studying the deep migration channel of the gas hydrates , free gas , and hydrocarbon by developing and improving OBS seismic tomographic imaging technique , which plays some role of guiding for ocean gas hydrate exploration .

然后根据对水合物的地震属性（BSR，AVO，BZ等）分析和正演模拟研究，预测水合物及其游离气的存在，结合地质条件，圈定出水合物成藏的有利区带；

Then analyses of seismic attributes , such as BSR , AVO , and BZ as well as forward modeling are conducted to predict the potential existence of hydrate and its free gas . In conjunction with geological conditions , the hopeful zones of gas hydrate reservoirs can be estimated .

天然气水合物和游离气饱和度估算的影响因素

Factors affecting the estimation of gas hydrate and free gas saturation

游离气作用下的渗漏型甲烷水合物形成

Formation of methane hydrate induced by free gas migration in seeping seafloor sediments

地震属性参数在识别天然气水合物和游离气分布模式中的应用

Determining the distribution model of hydrate and free gas occurrence in sediment with seismic attribute parameters

同时，对影响饱和度的因素进行了分析，认为地层孔隙度是影响水合物和游离气饱和度的关键因素。

It is referred that porosity is the main factor to affects saturation directly . The Qi ( vital energy )

浅部煤储层中基本上为吸附气，深部煤储层中吸附气、游离气、溶解气共存，游离气的重要性随埋深增加而增大；

The shallow coal reservoirs pools primarily absorption gas , but in the deep coal reservoirs , absorption , dissociation and dissolution gases may coexist .

地层中天然气常以游离气、吸附气和水溶气3种形式存在。

Hydrocarbon gases in the subsurface exit in free form , by absorbing on organic matter and mineral particles , or by dissolving in formation water .

油气微渗漏扩散物理实验的再现及数值模拟游离气作用下的渗漏型甲烷水合物形成

NUMERICAL SIMULATION AND RECONSTRUCTION OF PHYSICAL EXPERIMENTS OF DIFFUSION PROCESSES IN OIL-GAS MICRO SEEPAGE Formation of methane hydrate induced by free gas migration in seeping seafloor sediments

讨论了不同水合物胶结类型的流体饱和多孔隙固体中地震波的衰减情况，分析了估算天然气水合物和游离气饱和度影响因素。

Attenuations of different types of gas hydrate cementation in fluid-saturated porous solids are discussed . The factors affecting estimation of gas hydrate and free gas saturation are analyzed .

给出了含天然气水合物沉积层、含游离气沉积层孔隙度与地震波速度及波阻抗的关系，提出了确定性沿层孔隙度反演技术的方法。

The authors give the relationships between hydrate-bearing sediments , free gas-bearing sediment porosity , seismic wave velocity and wave impedance , and also set forth inversion technique method of interlayer porosity .

结果表明，地层孔隙度、纵波速度模型和弹性模量的计算方法是影响反演水合物和游离气饱和度的关键因素。

It is suggested that porosity of sediment , the P wave velocity model and methods of calculating elastic modulus are key factors in the estimation of gas hydrate and free gas saturations .

而由高频速度模型得到的水合物饱和度（占孔隙空间的）5%～10%，游离气饱和度（占孔隙空间的）1%～2%。

The gas hydrate saturation obtained by high frequency velocity is 5 % ~ 10 % of the pore space and free gas saturation is 1 % ~ 2 % of the pore space .

在分析过程中考虑了构造热事件对高煤阶煤层气藏物性的改造作用和生物气、游离气在低煤阶煤层气成藏过程中的作用。

The analysis considered the improvement of the coalbed physical property by heat in structural movements in high coal rank reservoirs and the important role of biogas and free gas in low rank CBM reservoirs .

沁水盆地煤系地层游离气资源丰富，主要赋存在煤层顶底板和煤系地层常规储层中。

Coal strata in Qinshui Basin are rich in natural gas resources , and free gas mainly exists in the roof and floor of coal-bed and in the conventional reservoirs of coal seam formation in the .

基于时间平均-Wood加权方程、三相介质波传播理论模型和弹性模量模型，计算并阐述含天然气水合物岩石弹性参数与水合物饱和度、含游离气岩石弹性参数与游离气饱和度的关系；

The relationships between elastic properties and gas hydrate / free gas concentration are presented based on the models of weighted time average wood 's equation , seismic wave propagation in three phases effective medium and elastic modulus .

认为波阻抗剖面和拉梅系数剖面上的近似平行于海底的高值带指示水合物层，且水合物层下伏所圈闭的低泊松比和低纵波波阻抗区域指示游离气的存在；

The zone of paralleling bottom with high impedance and Lame parameter indicates the gas-hydrate layer , and the area with low impedance and Possion 's ratio trapped by gas-hydrate layer below it symbolizes the accumulation of free gas .

通过实例介绍酯化反应产生的水、游离EG的气速和回流液流量对分馏的影响及几种干扰分馏控制的因素。

Effect of water generated from esterification reaction , the gas speed of free EG and the flow of reflux liquid on fractionation and several factors interaction on fractionation control are introduced by example .

芳砜型合成鞣剂中游离苯酚的气相色谱测定

Determination of Free Phenol in Aromatic Sulfonyl Syntan by Capillary Gas Chromatography

纺织品中游离甲醛的气相色谱分析

Analysis of Free Formaldehyde in Textiles by Gas Chromatogrphy

泥岩盖层封闭游离相天然气的演化特征及其意义

Seal evolution of mudstone caprock to gas in free phase and its significance

在静水条件下，游离相天然气运移的主要动力是浮力，阻力是毛细管力。

Main driving force for migration of separate phase natural gas is buoyancy , and resistance is capillary force .

指出：不同浓度适用于不同的地质条件，游离相含气浓度适用于天然气在不含水岩石中的扩散；

Different concentrations are fit in with different geological conditions . Concentration in free phase is fit in with diffusion of gas in no water-filled rocks .

页岩气藏中的天然气不仅包括存在于裂缝中的游离相天然气，也包括存在于岩石颗粒表面上的吸附气。

There is not only free phase gas existed in the fractures , but also absorbed gas on the surface of rock particles in the shale gas reservoirs .

游离相天然气在从运移到聚集和保存的过程中，通常存在着深盆气藏和常规圈闭气藏两种机理模式。

There are two typical kinds of mechanisms and models for gas migration , accumulation and preservation , including deep basin or basin centered gas accumulations and generally trapped gas accumulations .

指出：异常孔隙流体压力不能直接对游离相天然气进行封闭，但可使泥岩盖层毛细管封闭能力增强，间接地对封闭游离相天然气起作用；

Abnormal pore fluid pressure was considered not to seal gas in free phase directly , it can play an indirect role in sealing gas in free phase through increase of capillary seal ability of mudstone caprock .