| 生物降解作用对原油中烷基菲分布的影响 |
| |
| 引用本文： | 黄海平,周树青,初振淼,郭亚婷.生物降解作用对原油中烷基菲分布的影响[J].现代地质,2005,19(3):416-424. |
| |
| 作者姓名： | 黄海平 周树青 初振淼 郭亚婷 |
| |
| 作者单位： | 1中国地质大学能源学院，北京100083；2辽河油田 冷家公司，辽宁盘锦124010 |
| |
| 基金项目： | 国家自然科学基金项目（40373022）. |
| |
| 摘 要： | 辽河盆地冷东油田原油来源单一，成熟度相近，生物降解是导致原油中烷基菲含量和组成发生变化的主要原因。通过对不同降解程度油砂样品中烷基菲含量和分布的详细地球化学分析，发现中等程度生物降解（3到5级）使烷基菲含量大大降低，而异构体相对含量的变化主要发生在中等程度生物降解之后（4级以上），原油遭受4级以下生物降解影响时，烷基菲参数仍能有效指示成熟度。烷基菲生物降解的难易程度明显受烷基化程度的控制，C3-菲比低烷基取代化合物的抗生物降解能力强，但甲基菲比菲更容易降解，推测这与甲基菲的脱甲基作用有关。生物降解对烷基菲各异构体的消耗有强烈的选择性，在9位或 10位上取代的烷基菲比其他位置取代的烷基菲抗生物降解能力强，根据烷基菲系列中化合物相对含量随生物降解程度的变化，确定了甲基菲、C2-菲和C3-菲各异构体的生物降解顺序，研究成果为芳烃成熟度参数的合理选用和生物降解定量评价提供了依据。
|
| 关 键 词： | 烷基菲 异构体 烷基化 生物降解 辽河盆地 |
| 文章编号： | 1000-8527(2005)03-0416-09 |
| 收稿时间： | 03 29 2005 12:00AM |
| 修稿时间： | 06 22 2005 12:00AM |
The Effect of Biodegradation on Alkylated Phenanthrene Distributions in Reservoired Oils |
| |
| HUANG Hai-ping,ZHOU Shu-qing,CHU Zhen-miao,GUO Ya-ting.The Effect of Biodegradation on Alkylated Phenanthrene Distributions in Reservoired Oils[J].Geoscience——Journal of Graduate School,China University of Geosciences,2005,19(3):416-424. |
| |
| Authors: | HUANG Hai-ping ZHOU Shu-qing CHU Zhen-miao GUO Ya-ting |
| |
| Institution: | 1School of Energy Resources, China University of Geosciences, Beijing100083，China;
2Lengjia Company, Liaohe Oilfield, CNPC, Panjin，Liaoning124010，China |
| |
| Abstract: | Oil discovered from the Lengdong Oilfield, Liaohe Basin has similar source and maturity. Biodegradation is main cause leading to concentration and distribution variations of alkylated phenanthrenes. The concentrations and molecular distributions show systematic variations at different biodegradation levels. The concentration decreases significantly from level 3 to 5 while isomer distribution varies in slightly advanced biodegradation stage>level 4. Alkylated phenanthrene maturity parameters remain valid till biodegradation level 4. Degree of alkylation is a critical factor to control the rate of biodegradation. The C_(3)-phenanthrenes show high ability to resist biodegradation compared to their low alkylated counterparts, however, we do observed methylphenanthrenes decrease faster than phenanthrene. Demethylation of a substituted compound during biodegradation was inferred as one of biodegradation reaction process. Alkylated isomer specific degradations are also observed in our sample set. Alkylphenanthrenes with substituents at the 9th or 10th position are more resistant to biodegradation than alkylphenanthrenes with substituents at other positions. The relative susceptibility to biodegradation for the individual methylphenanthreneMP, C_(2)-phenanthrene and C_(3)-phenanthrene isomers were determined by their concentration variations. This result provides practical guide for aromatic hydrocarbon maturity parameter selection and further insight into mechanism and quantification of biodegradation in reservoired oils. |
| |
| Keywords: | alkylated phenanthrene isomer alkylation biodegradation Liaohe Basin |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《现代地质》浏览原始摘要信息 |
| 点击此处可从《现代地质》下载免费的PDF全文 |
