| 冀中凹陷文安油田双环倍半萜的分布及其意义 |
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| 引用本文： | 徐真,张春明,刘强,李杰.冀中凹陷文安油田双环倍半萜的分布及其意义[J].西安地质学院学报,2010(4):368-371. |
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| 作者姓名： | 徐真 张春明 刘强 李杰 |
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| 作者单位： | [1]长江大学油气资源与勘探技术教育部重点实验室,湖北荆州434023 [2]长江大学地球化学系,湖北荆州434023 [3]中国石油天然气集团公司新疆油田公司重油开发公司油田地质研究所,新疆克拉玛依834000 [4]中国石油天然气集团公司华北油田公司勘探开发研究院,河北任丘062552 |
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| 基金项目： | 国家自然科学基金项目（40772091） |
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| 摘 要： | 基于全油气相色谱/质谱联用定量分析技术,分析了冀中凹陷文安油田原油中双环倍半萜在空间分布上的非均质性特征及其变化规律,并讨论了其非均质性特征的地质-地球化学意义。结果表明：微生物的降解作用对双环倍半萜的影响并不明显,文安油田原油含有丰富的双环倍半萜;文安油田原油中双环倍半萜的总体分布特征是C14倍半萜化合物相对丰度最小,C15倍半萜化合物相对丰度居中,C16倍半萜化合物相对丰度最高;文安油田南区与北区原油存在明显非均质性;重排补身烷与8β（H）-补身烷、C30重排藿烷与C30藿烷、C27重排甾烷与C27甾烷的相对丰度比值具有显著相关性,反映重排补身烷的形成机理与重排甾烷、重排藿烷的形成具有相似性;原油分子组成上的非均质性预示着文安油田原油可能存在两种不同的成因类型,文安油田南区和北区可能存在着2个油气富集体系。
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| 关 键 词： | 双环倍半萜 重排藿烷 重排甾烷 非均质性 成因类型 冀中凹陷 文安油田 |
Distribution of Bicyclic Sesquiterpenes and Its Significance in Wen＇an Oilfield,Jizhong Depression |
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| Authors: | XU Zhen ZHANG Chun-ming LIU Qiang LI Jie |
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| Institution: | 1.Key Laboratory of Oil and Gas Resources and Exploration Technology,Yangtze University,Jingzhou 434023, Hubei,China;2.Department of Geochemistry,Yangtze University,Jingzhou 434023,Hubei,China;3.Institute of Geology Oilfield,Heavy Oil Production Company,Xinjiang Oilfield Company,China National Petroleum Corporation,Karamy 834000,Xinjiang,China;4.Exploration and Development Research Institute,Huabei Oilfield Company,China National Petroleum Corporation,Renqiu 062552,Hebei,China) |
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| Abstract: | Based on all oil gas chromatography/mass spectrometry quantitative analysis,characteristics of heterogeneity of bicyclic sesquiterpenes and its variation rules in spatial distribution were analyzed,geological geochemical significance of the characteristics was discussed.The results showed that microbial degradation had no significant effect on bicyclic sesquiterpenes,which were abundant in crude oil produced from Wen＇an Oilfield;the distribution of bicyclic sesquiterpenes was that the relative abundance of C14 sesquiterpenoids was least,C15 sesquiterpenoids was middle,and C16 sesquiterpenoids was most;there was significant heterogeneity between south and north blocks of Wen＇an Oilfield;there was a significant correlation among the ratios of relative abundance between rearranged drimane and 8β（H）-drimane,C30 rearranged hopane and C30 hopane,and C27 rearranged sterane and C27 sterane;formation mechanism of rearranged drimane was similar with that of rearranged hopane and rearranged sterane;heterogeneity of molecular composition of crude oil indicated that there were two different genetic types and two oil and gas accumulation systems possibly in the south and north blocks of Wen＇an Oilfield. |
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| Keywords: | bicyclic sesquiterpenes rearranged hopane rearranged sterane heterogeneity genetic type Jizhong Depression Wen＇an Oilfield |
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