一种良好的煤成油、煤成气的母质类型——泥炭藓煤热模拟有机地球化学特征

本文研究了云南金所第三纪褐煤盆地中泥炭藓煤在人工热模拟条件下产油、产气特征及元素组成、生物标记化合物等有机地球化学特征,并与同煤化程度的木质褐煤进行了对比。研究结果表明:随着成熟度的增高,泥炭藓煤具有很高的生烃能力:其最大生油率为501mg/g corg。,最大产烃量为232.1mg/g corg;在R_(ran)~o为2.51对,泥炭藓煤产气率达620.5ml/g corg。由于泥炭藓煤在成煤植物、成煤环境及物理化学性质上都不同于一般的腐植褐煤,因而是一种新的煤成油、煤成气的母质类型。     

ORGANIC GEOCHEMISTRY OF ARTIFICIALLY HEATED SPHAGNUM COAL CONSIDERED AS POSSIBLE SOURCE ROCK FOR OIL AND GAS

A preliminary study of simulated thermal maturity has been conducted to evaluate the oil, gas and hydrocarbon generation potential of sphagnum coal in the Jinsuo brown coal basin, Yunnan Province and to understand the characteristics of the element composition and biomarkers in the course of thermal alteration. The experimental result was compared with that of xylitic coal, a kind of lithotype of soft brown coal. It is considered that sphagnum coal possesses the potential of forming economic accumulation of oil and gas. Its highest proportion of oil and hydrocarbon generation is 510 mg/g Corg. and 232.1 mg/g Corg. respectively. At an R_(ran)~° value of 2.51%, the ratio of gas generation from sphagnum coal attains to 620.5 ml/g Corg. In view of sphagnum coal being different from the conventional soft brown coal in various respects such as coal forming raw materials and enviroments as well as physico-chemical properties, it is Suggested as a special kind of source rock for coal-generated oil and gas.     

PRELIMINARY STUDY OF HYDROCARBONS GENERATED FROM FUSHUN COAL RESINITE (Ⅰ)——PRODUCTIVITY AND NATURE OF HYDROCARBONS

Thermal simulation experiments were conducted to understand the productivity of hydrocarbons andtheir nature. It is shown by the experimental results that coal resinite has a high productivity of hydro-carbons and may be a good source rock, resulting in light oils of low maturity in early stage. Naturalgases generated from coal resinite are rich in high molecular weight gas hydrocarbons (C_2~+), up to 19%(V/V). So, if natural gases were generated from coal formation which is rich in resinites, they cannotbe recognized as dry gases as normal. Characteristics of liquid hydrocarbons generated from coal resinitesare: (i) main composition of aromatics in extracts, of which the amount will increase with increasingmaturity; (ii) major compounds of diterpenoids in aliphatics.     

石墨、菱铁矿与超临界水反应的实验研究

 为研究地球深部无机成烃的机制，在金刚石压腔（DAC，温度为800~1 500 ℃，压力略大于1 GPa）中进行了石墨和菱铁矿分别与超临界水反应的实验研究。用气相色谱法分析了气体产物的组成，发现其中均有大量的甲烷生成，并伴有CO₂和CO；此外还有少量其它烃类。上述结果意味着在地球深部高温高压条件下，含碳物质与超临界水反应可能是一种新的、重要的成烃机制。     

抚顺煤树脂体成烃的初步实验研究——Ⅰ.烃的产率与性质

本文研究了抚顺第三系煤树脂体在人工热模拟条件下的产油、产气能力及所产出的油、气的性质。结果表明:煤树脂体具有很好的产烃能力,是很好的生油母质,可能是形成低成熟轻质原油的重要煤岩成份,煤树脂体生成的气体中乙烷以上重烃的含量很高,最高达19％(体积),因而富含树脂体的含煤地层中产出之煤成气不能一般地认为属于干气的范畴。煤树脂体产出液体烃类的特征是:(1)组成上以芳烃为主,并随成熟度的增高而增加;(2)烷烃以三环二萜类化合物为主。     

气体色谱分析的多图谱归一定量法和气体组分的相对校正因子

本文报道一种扩展的气相色谱归一化定量分析方法，使两台或两台以上色谱仪对同一样品的诸多组分所完成的多张色谱力痛应用归一定量法进行计算，从而在进行多组分测定（尤其是气体样品的分析）时大大减少工作量，本方法的关键是样品中某一组分在多张图谱中均有分离很好的峰。     

氢气在热导检测器上的相对校正因子

用三种不同来源的标准气，当实验测定了氮气作载气时，以甲烷作标准物，氢气在热导检测器上的相对摩尔校正因子值为０．２１０ 和相对质量校正因子值为０．０２６４。测定误差小于５％ 。该测定值可供天然气和化工行业气体分析工作者参考。