盐湖相低演化烃源岩的生烃机理及生物标志物演化特征——沥青“A”热模拟

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盐湖相低演化烃源岩的生烃机理及生物标志物演化特征——沥青“A”热模拟

文章导航 > 沉积学报 > 2007 > 25(5): 800-807

孟仟祥. 盐湖相低演化烃源岩的生烃机理及生物标志物演化特征——沥青“A”热模拟[J]. 沉积学报, 2007, 25(5): 800-807.

引用本文:

孟仟祥. 盐湖相低演化烃源岩的生烃机理及生物标志物演化特征——沥青“A”热模拟[J]. 沉积学报, 2007, 25(5): 800-807.

MENG Qianxiang. Hydrocarbon Generation Mechanism and Evolution Characteristics of Biomarkers on LowEvolutionary Source Rocks of the Salt Lacustrine Facies[J]. Acta Sedimentologica Sinica, 2007, 25(5): 800-807.

Citation:

MENG Qianxiang. Hydrocarbon Generation Mechanism and Evolution Characteristics of Biomarkers on LowEvolutionary Source Rocks of the Salt Lacustrine Facies[J]. Acta Sedimentologica Sinica, 2007, 25(5): 800-807.

孟仟祥. 盐湖相低演化烃源岩的生烃机理及生物标志物演化特征——沥青“A”热模拟[J]. 沉积学报, 2007, 25(5): 800-807.

引用本文:

孟仟祥. 盐湖相低演化烃源岩的生烃机理及生物标志物演化特征——沥青“A”热模拟[J]. 沉积学报, 2007, 25(5): 800-807.

MENG Qianxiang. Hydrocarbon Generation Mechanism and Evolution Characteristics of Biomarkers on LowEvolutionary Source Rocks of the Salt Lacustrine Facies[J]. Acta Sedimentologica Sinica, 2007, 25(5): 800-807.

Citation:

MENG Qianxiang. Hydrocarbon Generation Mechanism and Evolution Characteristics of Biomarkers on LowEvolutionary Source Rocks of the Salt Lacustrine Facies[J]. Acta Sedimentologica Sinica, 2007, 25(5): 800-807.

盐湖相低演化烃源岩的生烃机理及生物标志物演化特征——沥青“A”热模拟

孟仟祥

中国科学院地质与地球物理研究所气体地球化学重点实验室兰州 730000

通讯作者:
孟仟祥

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Hydrocarbon Generation Mechanism and Evolution Characteristics of Biomarkers on LowEvolutionary Source Rocks of the Salt Lacustrine Facies

MENG Qianxiang

Key Laboratory of Gas Geochemistry, Chinese Academy of Sciences, Lanzhou 730000

More Information

Corresponding author: MENG Qianxiang

摘要: 柴达木盆地盐湖相低演化烃源岩沥青“A”的热模拟研究表明：在热作用下其排烃高峰在热模拟温度较低区间220~270℃，且以非烃和沥青质相对丰度最高为特征。沥青“A”在由未熟—低熟—成熟的演化过程中，各系列生物标志物的成熟速率不同，表现为正构烷烃＞藿烷＞甾烷。非烃和沥青质中含杂原子的极性化合物在热模拟温度300℃后开始大量发生脱羟基、脱羧基、脱羰基及链断裂反应。沉积有机质在低演化阶段甾烷C29ββ/(ββ+αα)值异常高表明该地区细菌微生物发育。柴达木盆地低演化烃源岩在较低温度区间大量排烃，是细菌微生物对沉积有机质改造后其活化能大大降低所致。
- 化烃源岩热模拟生烃机理生物标志物
Abstract: Investigation of the thermal simulation of lowevolutionary source rocks bitumen “A” of the salt lacustrine facies in Qaidam Basin indicated that the range of temperature on the hydrocarbon generating fastigium in the thermal function are 200～270℃, and the source rocks are characterized by high relative abundance of the nonhydrocarbon and asphaltene. The mature velocity of the biomarkers are different from the immature to lowmature to highmature oil, and it’s sequence is alkane>hopane>sterane. The polar compound in the nonhydrocarbon and asphaltene, which have some atom other than carbon, have some reactions after 300℃ in thermal simulation, for instance, dehydroxylation, decarboxylation, decarbonyl and the chain cleavage. The ratio of sterane C29ββ/(ββ+αα) is very high in lowevolutionary stage, indicating that there are some bacteriumgerms in this area. In low temperature range of lowevolutionary source rocks in Qaidam Basin have generated a significant volume of hydrocarbon, consequently the activation energy of source rocks would become down because the depositional organic matter have been rebuilt by the bacteriumgerms.
- lowevolutionary source rocks

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文章访问数: 1773
HTML全文浏览量: 10
PDF下载量: 645
被引次数: 0

盐湖相低演化烃源岩的生烃机理及生物标志物演化特征——沥青“A”热模拟

孟仟祥

中国科学院地质与地球物理研究所气体地球化学重点实验室兰州 730000

通讯作者: 孟仟祥

收稿日期: 1900-01-01
修回日期: 1900-01-01
刊出日期: 2007-10-10

关键词:

化烃源岩热模拟生烃机理生物标志物

摘要: 柴达木盆地盐湖相低演化烃源岩沥青“A”的热模拟研究表明：在热作用下其排烃高峰在热模拟温度较低区间220~270℃，且以非烃和沥青质相对丰度最高为特征。沥青“A”在由未熟—低熟—成熟的演化过程中，各系列生物标志物的成熟速率不同，表现为正构烷烃＞藿烷＞甾烷。非烃和沥青质中含杂原子的极性化合物在热模拟温度300℃后开始大量发生脱羟基、脱羧基、脱羰基及链断裂反应。沉积有机质在低演化阶段甾烷C29ββ/(ββ+αα)值异常高表明该地区细菌微生物发育。柴达木盆地低演化烃源岩在较低温度区间大量排烃，是细菌微生物对沉积有机质改造后其活化能大大降低所致。

English Abstract

孟仟祥. 盐湖相低演化烃源岩的生烃机理及生物标志物演化特征——沥青“A”热模拟[J]. 沉积学报, 2007, 25(5): 800-807.

引用本文:

孟仟祥. 盐湖相低演化烃源岩的生烃机理及生物标志物演化特征——沥青“A”热模拟[J]. 沉积学报, 2007, 25(5): 800-807.

MENG Qianxiang. Hydrocarbon Generation Mechanism and Evolution Characteristics of Biomarkers on LowEvolutionary Source Rocks of the Salt Lacustrine Facies[J]. Acta Sedimentologica Sinica, 2007, 25(5): 800-807.

Citation:

MENG Qianxiang. Hydrocarbon Generation Mechanism and Evolution Characteristics of Biomarkers on LowEvolutionary Source Rocks of the Salt Lacustrine Facies[J]. Acta Sedimentologica Sinica, 2007, 25(5): 800-807.

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