Significance of Amino Acids and Fatty Acids for the Formation of the Bio-thermocatalytic Transition Zone Gases
-
摘要: 对草海盆地泥炭、柴窝堡盆地第四系沉积物以及辽河东部凹陷、胜利东营凹陷、苏北金湖凹陷等第三系烃源岩中氨基酸、脂肪酸进行定性、定量分析，并开展热模拟实验。研究表明氨基酸主要赋存于沥青中，分解后可以生成烃类气体和Ｎ２气，对过渡带气的形成可作出贡献。烃源岩干酪根和沥青中的脂肪酸含量不少，沥青中脂肪酸以一元酸为主，具偶碳优势，干酪根中脂肪酸以二元酸为主，不具偶碳优势。沥青和干酪根中脂肪酸脱羧基后产生烷烃，对过渡带气和低熟油都可作出贡献，沥青中脂肪酸是生成低熟油中具奇碳优势正烷烃的主要物源。Abstract: The amino acids and fatty acids in sediments of Caohai, Chaiwopu, Liaohe, Jiyang and Subei Basins were quantitatively analysed in this study. Based on the results, the gas-generating tests of peat and mudstone were carried out to investigate distribution and compostition of fatty acids in the extract and kerogen. As a result, some points are drawn as follows:1. Amino acids in sediments are mainly present in the soluble organic matter and may produce hydrocarbons during early diagenesis stage,contributing to the formation of Bio - thermocatalytic Transition Zone Gases.2.α-fatty acids in sediments are mainly present in asphaltene and may produce hydrocarbon, contributing to the formation of immature oil during early diagenesis stage.3. Kerogen is rich in α,ω - fatty acids which are favourable to the generation of Bio-thermocatalytic Transition Gases during erly diagenesis stage, and produce hydrocarbon in mature oil druing oil generating stage.
-
[1] 1.王万春、刘文汇、徐永昌、赵庆波、朴明植、吴铁生，1988，辽河盆地天然气地球化学，中国科学院兰州地质研究所生物、气 体地球化学开放研究室研究年报(1987 ) . 47-46，兰州:甘肃科学技术出版社.
2.王新洲、李丽，1989，天然气生成量模拟实验研究，石油技术，(4):1-12。
3.向明菊.1985.氨基酸的地球化学及其应用，黄土与环境，265-275，北京:科学出版社。
4.向明菊.1989，黄土中的氨基酸和类脂物，中国黄土地球化学，170-186，北京:科学出版社。
5.徐水昌、沈平、刘文汇、王万春，1990，一种新的天然气成因类型一生物热催化过渡带气，中国科学(B辑).(9):975-980。
6.Andersen.B.，Barth.T. and Throndson,T.，1993. Generation potential of carbon dioxide and organic acids from North Sea source rocks. yields and carbon isotopic composition. Organic geochemistry. Poster session for the 16th international Meeting on Organic geochemistry. Stavanger, 1993. (Editor:Kjell Oygard)，Falch. Hurtigtrykk.
7.Galimov.E. M.，1988. Source and mechanisms of formation of hydrocarbons in sedimentary rock. Chemical Geology,71:77一95.8.Philippi,G. , 1978，蛋白质一低分子量石油烃的一种原始母质，地质地球化学，(12);13-16,
9.Sellers,G. A.，1966. Hydrocarbon experiments on the thermal stability of amino substances in sediments Ph. D. thesis,California inst. of Technology. Univ. of Microfilms In: Annuel Arbor, Michigan. No. 662197. -
点击查看大图
计量
- 文章访问数: 545
- HTML全文浏览量: 4
- PDF下载量: 473
- 被引次数: 0
下载:
