| 雅布赖盆地萨尔台凹陷侏罗系新河组有效烃源岩研究 |
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| 引用本文： | 都鹏燕,高岗,魏涛,赵乐义,杨军,李涛,王建国.雅布赖盆地萨尔台凹陷侏罗系新河组有效烃源岩研究[J].吉林大学学报(地球科学版),2018(1):29-38. |
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| 作者姓名： | 都鹏燕 高岗 魏涛 赵乐义 杨军 李涛 王建国 |
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| 作者单位： | 中国石油大学(北京)地球科学学院,北京102249;同济大学海洋与地球科学学院,上海200092
中国石油大学(北京)地球科学学院,北京,102249
中国石油玉门油田公司勘探开发研究院,甘肃酒泉,735019 |
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| 基金项目： | 中国石油重大科技专项(2013E-050209)Supported by PetroChina Major Science and Technology Project(2013E-050209) |
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| 摘 要： | 对雅布赖盆地萨尔台凹陷侏罗系新河组有效烃源岩进行有机质下限分析,识别有效烃源岩分布范围,并分析有效烃源岩下限值与成熟度的关系。本文据烃源岩生排烃机理,通过w(TOC)与热解参数w(S1)之间的关系,确定了雅布赖盆地萨尔台凹陷新河组下段有效烃源岩w(TOC)下限值,其中盐场次凹有效烃源岩w(TOC)下限值为1.0%,小湖次凹w(TOC)下限值为0.7%,梭托次凹不具备排烃条件。利用△log R法计算新河组下段的页岩w(TOC)含量,识别并统计了单井有效烃源岩厚度,参照沉积相和地层厚度确定了有效烃源岩的分布特征,新河组下段有效烃源岩主要分布在小湖次凹中央洼槽带,累计厚度最大约600m,盐场次凹有效烃源岩累计厚度基本小于100m,梭托次凹不发育有效烃源岩。成熟度越大,有效烃源岩w(TOC)下限值越小。
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| 关 键 词： | 有效烃源岩 w(TOC)下限值 新河组 萨尔台凹陷 雅布赖盆地 effective source rocks low limit value of TOC content Xinhe Formation Sartai sag Yabrai basin |
Effective Source Rocks in Jurassic Xinhe Formation in Sartai Sag,Yabrai Basin |
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| Du Pengyan,Gao Gang,Wei Tao,Zhao Leyi,Yang Jun,Li Tao,Wang Jianguo.Effective Source Rocks in Jurassic Xinhe Formation in Sartai Sag,Yabrai Basin[J].Journal of Jilin Unviersity:Earth Science Edition,2018(1):29-38. |
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| Authors: | Du Pengyan Gao Gang Wei Tao Zhao Leyi Yang Jun Li Tao Wang Jianguo |
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| Abstract: | According to the hydrocarbon generation and expulsion mechanism,the authors analyzed the relationship between TOC content and rock pyrolysis parameter S1,determined the low limit value of effective source rock TOC content of the lower member of the Xinhe Formation shale in Sartai sag,Yabrai basin.The low limit value of TOC content in the Xinhe Formation shale of Yanchang subsag and Xiaohu subsag are 1.0％ and 0.7％o respectively,while the source rocks in the Xinhe Formation of Suotuo subsag are unsatisfied with the hydrocarbon expulsion condition.Using the △log R method,the authors calculated the TOC content of the Xinhe Formation shale,then recognized the effective source rocks in wells and got the distribution characteristics of effective source rocks referring to the sedimentary facies and statistic thickness of effective source rocks in wells.The effective source rocks of the lower member of the Xinhe Formation are mainly distributed within Xiaohu subsag with the maximum gross thickness adjacent to 600 m,basically less than 100 m in Yanchang subsag,and there are no effective source rocks in Suotuo subsag.The higher the thermal maturity is,the lower the low limit value of effective source rock TOC content. |
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