开鲁盆地茫汉断陷烃源岩评价
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摘要
利用工区参数井(哲参2井)样品分析化验资料,对茫汉断陷烃源岩的地球化学特征进行了定量研究,对其生烃能力进行了综合评价,并应用地震反演技术对茫汉断陷烃源岩空间分布进行了预测。研究表明,茫汉断陷烃源岩为半深湖、深湖相泥岩,有机质丰度指标高,干酪根类型以Ⅱ型为主,烃源岩有机质已成熟并进入生油门限,具有较强的生烃能力。地震反演揭示烃源岩在茫汉断陷分布范围广,凹陷中心厚度可达300 m以上,具有一定的规模,因此茫汉断陷具有较好的勘探前景,毗邻生油中心的有效圈闭是茫汉断陷最有利的目标勘探区。
In order to determine the exploration prospect of Manghan Depression in Kailu Basin,the geochemical behavior of its source rock is quantitatively examined by sample analysis data from Well Zhecan 2 and as a result the petroleum generation potency of the source rock is comprehensively evaluated,and finally the spatial distribution of source rock is predicted with seismic inversion.According to the research result,the source rock of Manghan Depression is pelagic and mudstone with high organic matter abundance,whose kerogen is sorted as Ⅱ-type and has become mature into petroleum generation threshold,so the source rock of Manghan Depression has a high potential of hydrocarbon generation.Seismic inversion shows that the source rock widely spreads in Manghan Depression with a thickness of 300 meter in center.So the study area has a good exploration prospect and the effective trap adjacent hydrocarbon generation zone center is the optimum exploration target area.
In order to determine the exploration prospect of Manghan Depression in Kailu Basin,the geochemical behavior of its source rock is quantitatively examined by sample analysis data from Well Zhecan 2 and as a result the petroleum generation potency of the source rock is comprehensively evaluated,and finally the spatial distribution of source rock is predicted with seismic inversion.According to the research result,the source rock of Manghan Depression is pelagic and mudstone with high organic matter abundance,whose kerogen is sorted as Ⅱ-type and has become mature into petroleum generation threshold,so the source rock of Manghan Depression has a high potential of hydrocarbon generation.Seismic inversion shows that the source rock widely spreads in Manghan Depression with a thickness of 300 meter in center.So the study area has a good exploration prospect and the effective trap adjacent hydrocarbon generation zone center is the optimum exploration target area.
引文
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[17]钟宁宁,卢双舫,黄志龙,等.烃源岩TOC值变化与其生排烃效率关系的探讨[J].沉积学报,2004,22(增刊):73-78.
[19]曹寅,钱志浩,张渠.烃源岩评价分析项目的优化组合[J].海相油气地质,2008,13(3):55-62.
[20]金春爽,乔德武.浅谈盆地热历史及烃源岩热演化研究在中国油气资源战略选区调查评价中的意义[J].地质通报,2006,25(9):1050-1054.
[21]朱光有,金强,戴金星,等.复合生烃系统——陆相断陷盆地烃源岩评价和油气预测的重要概念[J].地质科学,2005,40(1):133-144.
[2]周兴熙.复合叠合盆地油气成藏特征——以塔里木盆地为例[J].地学前缘,2000,7(3):39-47.
[3]郝芳,邹华耀,方勇.隐蔽油气藏研究的难点和前沿[J].地学前缘2005,12(4):481-488.
[4]Isaksen G H,I.Ledje K H.Source rock quality and hy-drocarbon migration pathways within the greater UtsiraHigh area,Viking Graben,Norwegian North Sea[J].AAPG Bulletin,2001,85(5):861-883.
[5]赵文智,何登发,池英柳,等.中国复合含油气系统的基本特征与勘探技术[J].石油学报,2001,22(1):6-13.
[6]刘克奇,金之钧.塔里木盆地塔中低凸起奥陶纪油气成藏体系[J].地球科学2004,29(4):489-494.
[7]Banerjee A,Pahari S,Jha M,et al.The effective source rocksin the Cambay Basin,India[J].AAPG Bulletin,2002,86(3):433-456.
[8]Petersen H I,Bojesen-Koefoed J A,Nytoft H P.Sourcerock evaluation of Middle Jurassic coals,northeast Green-land,by artificial maturation:Aspects of petroleum genera-tion from coal[J].AAPG Bulletin,2002,86(2):233-256.
[9]甘贵元,尹成明,张鹏,等.格斯断槽侏罗系暴露烃源岩地球化学综合研究[J].石油实验地质,2001,23(1):93-96.
[10]姜振学,庞雄奇,金之钧,等.门限控烃作用及其在有效烃源岩判别研究中的应用[J].地球科学,2002,27(6):689-695.
[11]朱芳冰.辽河盆地西部凹陷源岩特征及低熟油分布规律研究[J].地球科学,2001,27(1):25-29.
[12]庞雄奇,李素梅,金之钧,等.排烃门限存在的地质地球化学证据及其应用[J].地球科学,2004,29(4):384-390.
[13]周总瑛.烃源岩演化中有机碳质量与含量变化定量分析[J].石油勘探与开发,2009,36(4):463-468.
[14]郭龙,陈践发,苗忠英.一种新的TOC含量拟合方法研究与应用[J].天然气地球化学,2009,20(6):651-956.
[15]张辉,彭平安.开放体系下干酪根生烃动力学研究[J].西南石油大学学报:自然科学版,2008,30(6):18-21.
[16]成海燕,李安龙,龚建明.陆相烃源岩评价参数浅析[J].海洋地质动态,2008,24(2):6-10.
[17]钟宁宁,卢双舫,黄志龙,等.烃源岩TOC值变化与其生排烃效率关系的探讨[J].沉积学报,2004,22(增刊):73-78.
[19]曹寅,钱志浩,张渠.烃源岩评价分析项目的优化组合[J].海相油气地质,2008,13(3):55-62.
[20]金春爽,乔德武.浅谈盆地热历史及烃源岩热演化研究在中国油气资源战略选区调查评价中的意义[J].地质通报,2006,25(9):1050-1054.
[21]朱光有,金强,戴金星,等.复合生烃系统——陆相断陷盆地烃源岩评价和油气预测的重要概念[J].地质科学,2005,40(1):133-144.
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