天然气水合物

现有的多种天然气水合物开采方案，如热激法、减压法、化学抑制剂法、置换法和混合开采法等。

Several exploitation methods for tapping NGH have been suggested , such as thermal activation , pressure releasing , chemical inhibitor , replacement and slurry mining .

根据国土资源部地质调查局官方网站，中国已在南海神狐海域成功开采了天然气水合物。

According to the official website of the China Geological Survey ( CGS ) under the Ministry of Land and Resources , China has successfully exploited NGH in the South China Sea 's Shenhu sea area .

GIS辅助估算南海南部天然气水合物资源量

GIS-aided estimation of gas hydrate resources in southern South China Sea

CO2置换开采天然气水合物研究进展

Advancement in research on replacement of CH4 from hydrate with CO_2

CO2用于置换开采天然气水合物也是很有前景的方案。

And displacement of gas hydrate with CO2 is a tempting programme also .

制定开发天然气水合物（GasHydrate）的技术方针，抓紧有关工艺及设备的研究；

Formulating technical policy for exploiting natural gas hydrate and carrying out research on the related technology and equipment ;

组合天然气水合物抑制剂性能及经济性研究组织蛋白酶K拟肽腈类抑制剂的合成、表征及抑制效应检测

A NEW AND LOW-COST COMPLEX INHIBITOR FOR NATURAL GAS HYDRATE Synthesis , Characterization and Enzyme Activity Assays of Peptides Nitriles as Inhibitors of Cathepsin K

含（CH4+CO2+H2S）酸性天然气水合物形成条件实验与计算

Hydrate formation conditions of ( CH_4 + CO_2 + H_2S ) ternary sour natural gases

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 .

天然气水合物BSR的识别与地震勘探频率

The seismic frequency effect on recognition of the BSR of gas hydrate

建立了天然气水合物似海底反射层（BSR）研究的全波形反演方法。

A full waveform inversion strategy is proposed for gas hydrate-related bottom simulating reflector .

天然气水合物研究中的AVA方法分析

Analysis of AVA method for gas hydrate study

含天然气水合物沉积物的岩石物性模型与似海底反射层的AVA特征

Physical property models of gas hydrate-bearing sediments and AVA character of bottom simulating reflector

孔隙水中NH4~+和HPO4~（2-）浓度异常：一种潜在的天然气水合物地球化学勘查新指标

Anomaly of Ammonia and Phosphate Concentration in Pore Waters : A Potential Geochemical Indicator for Prospecting Marine Gas Hydrate

建立了一套评价天然气水合物抑制剂抑制性能的实用方法（THF测试法），设计了实验装置，模拟了四氢呋哺水合物的形成过程。

A method used to evaluate the performance of hydrate inhibitor was established , which was called THF testing method .

天然气水合物中CH4的释放影响全球气候变化。同时，天然气水合物是一种潜在的环境灾害诱发因素。

The release of methane from the gas hydrate can lead to the global climate changes , and the environmental disasters can be induced by the gas hydrate .

在地震剖面上天然气水合物主要特征有：BSR、振幅异常、速度异常、AVO异常等标志特征。

In seismic section , the character of BSR , amplitude anomaly , velocity anomaly and AVO anomaly etc. show the existence of gas hydrates .

利用VB编程语言将上述理论程序化，编写了能预测醇盐混合体系天然气水合物生成的程序，并检验了该程序的准确性。

We routinized the theory above using VB compiler language and compiled the program that can predict the generations of gas hydrate in the alcohol and brine commingled system and tested the correction of this program .

天然气水合物的存在需要严格的温压条件，因此主要分布于水深大于300～500m的海洋沉积物和陆地永久冻土带内。

Gas Hydrate can only exist in strict temperature and pressure condition such as marine sediment located in more than 300 ~ 500m below seawater and permafrost area .

文章利用新建立的实验台研究了十二烷基硫酸钠（SDS）和烷基多糖苷（APG）对天然气水合物形成过程的影响。

The influence of sodium dodecyl sulfate ( SDS ) and alkyl polysaccharide glycoside ( APG ) on natural gas hydrate formation was studied by applying a new experimental rig .

POPs在大沽排污河沉积物/水系统的迁移行为南海北部陆坡区沉积与天然气水合物成藏关系

Transport of Persistent Organic Pollutants ( POPs ) in Sediments / waster System in Dagu Drainage River ; RELATION BETWEEN SEDIMENTATION AND GAS HYDRATE RESERVOIRS IN THE NORTHERN SLOPE OF SOUTH CHINA SEA

本文针对这些问题，利用本实验室开发的低温高压实验技术，探讨了天然气水合物模拟实验的几种探测方法，包括声学法、电阻法和时域反射（TDR）法。

Based on the low-temperature high-pressure techniques developed in our laboratory , several detection methods are discussed , including acoustic method , impendence method and Time-Domain - Reflector ( TDR ) method .

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 .

最后，应用上述流程，我们对西沙的两条海洋高分辨率地震剖面进行了处理，并取得了良好的效果，发现了具有海洋天然气水合物典型特征的BSR。

Finally , on the basis of the flow chart , two high-resolution seismic lines from Xisha are processed and a satisfactory result has been reached & BSR with the typical characteristics of hydrate was discovered .

其中等深流、滑塌块体和各种扇体的前缘与BSR分布的吻合率最高，是最有利于天然气水合物聚集成矿的相带。

Of these , the distribution of the contourite , slump block and fronts of deltas or fans is highly consistent with the distribution of BSR , and thus they are the most favorable facies for gas hydrate accumulation .

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 .

为利用反射地震属性研究天然气水合物，本文在常规地震处理发现BSR的基础上开展了：（1）AVO分析及AVO反演，获得了多属性地震特征；

To study gas hydrate over this area using reflection seismic methods , the following work is conducted on the basis of identifying BSR in the conventional migrated profile in this thesis : ( 1 ) AVO analysis and AVO inversion are carried out to obtain multiple seismic attributes ;

在海槽中部及南部，天然气水合物分布于水深大于500m的海域，水合物稳定带厚度分别为25～115m和90～365m。

In the middle and southern parts , gas hydrate appears at the sea depth over 500 meters , and the responding thickness of stable zones ranges 25 to 115 meters and 90 to 365 meters , respectively .

根据ODP184航次的电阻率、声波速度、密度等测井资料以及地质资料，初步推断南海陆坡存在天然气水合物。

On the basis of resistivity , sonic logging , density data and geology data in ODP184 , there exist gas hydrates in the continental slope of the South China Sea .

假定南海南部温度梯度范围为59&90℃·km-1，得天然气水合物稳定带厚度与水深的关系方程。

Assuming that the thermal gradient in the sediments of the southern South China Sea ranges from 59 to 90 (℃· km ~ ( - 1 )), we obtain the function of the thickness of the gas hydrate stability zone ( GHSZ ) versus the water depth .