节点文献

砂岩储层中不同赋存状态油砂抽提物的地球化学特征:长链酮——以鄂尔多斯盆地三叠系延长组为例

Geochemical Characteristics of Oil Sand Extracts in Different State from Sandstone Reservoirs: n-alkaneones——A case study from Yanchang Formation of Triassic in Ordos basin

  • 推荐 CAJ下载
  • PDF下载
  • 不支持迅雷等下载工具,请取消加速工具后下载。

【作者】 赵欣史基安谢正温王琪王有孝

【Author】 ZHAO Xin~(1,2,3) SHI Ji-an~(1) XIE Zhen-wen~4 WANG Qi~(1) WANG You-xiao~(1)(1.Key Laboratory ofGasGeochemistry,Institute of Geologyand Geophysics,Chinese Academy of Sciences,Lanzhou 730000;2.School of Earth Science and Land Resources,Chang’an University,Xi’an 710054;3.Graduate school of Chinese Academy of Sciences,Beijing 100039;4.Changqing Bureau of Petroleum Exploration.Xi’an 710021)

【机构】 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长庆石油勘探局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长安大学地球科学与国土资源学院西安710054中国科学院研究生院北京100039兰州730000西安710021

【摘要】 对采自西峰油田三叠系延长组六个油砂样品中游离烃、束缚烃的饱和烃、芳烃和氯仿馏分进行了系统的分析。在氯仿馏分中检测出一系列异常丰富的正构烷基酮化合物,其碳数分布范围C13~C33,具有强烈的奇碳优势。研究表明:正构烷基酮的演化受热演化(成熟度)的影响,在成熟度较低的束缚烃中,主要分布正构烷基-2-酮;而在成熟度较高的游离烃中,主要为正构烷基-3,4,5,6(或更高)-酮异构体。表现为随着成熟度的增加,正构烷基酮的羰基(∶CO)由2位向更高位迁移的趋势。正构烷基酮的形成是由于菌藻类和高等植物类脂中的脂肪酸,在粘土矿物等催化作用下,经β-氧化后脱羧基而形成。在束缚烃和游离烃中正构烷基酮的分布特征,可用于油气成藏差异的研究。

【Abstract】 Ordos basin is an important Mesozoic-Cenozoic petroliferous basin in West China.Xifeng Oilfield,in the southwest of Ordos Basin,was discovered in recent years.The crude oil reserve in this oilfield is about 100 million tons.Chloroform fractions of free oil and bound oil,which are extracted from six oil sands of Yanchang Formation in Xifeng oilfield,have been analyzed by GC/MS.The n-alkaneones in six samples show an strong odd carbon number predominance,carbon number ranging from C13to C31.This study shows that thermal evolution(maturity) has an effect on the evolution of n-alkaneones.The n-alkane-2-ones distribute in bound oil with low maturity,whereas n-alkane-3,4,5,6(or more)-ones distribute in free oil with high maturity.That is,with the increase of maturity,the carbonyl group distribution of n-alkaneones shifts to the higher homologues isomers.The origin of these n-alkaneones has been attributed to microbial production from n-fatty acids from bacteria,seaseed and higher plant lipid byβ-oxidation and decarboxylation.The distribution characteristics of n-alkaneonesin different state hydrocarbon can be used in dating petroleum accumulation.

【基金】 国家自然科学基金项目(批准号:40272065)资助;中国科学院知识创新重要方向项目(KZCX3-SW-128)资助
  • 【文献出处】 沉积学报 ,Acta Sedimentologica Sinica , 编辑部邮箱 ,2006年01期
  • 【分类号】P618.13;P593
  • 【下载频次】316
节点文献中: 

本文链接的文献网络图示:

本文的引文网络