塔里木盆地志留系—泥盆系层序界面的“四位一体”响应特征及其油气地质意义
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摘要
以塔里木盆地志留系—泥盆系为研究对象,通过对盆地周缘野外露头剖面详细观测、盆内典型钻井岩心详细描述、测井资料分析、地震剖面解释,详细研究了盆地内志留系—泥盆系沉积演化过程中关键层序界面(主要包括S/O界面——对应于地震剖面上的T07,上、中下志留统之间的层序界面——对应于地震剖面上的T16,上、中泥盆统之间的界面——对应于地震剖面上的T06,石炭系、泥盆系之间的界面——对应于地震剖面上的T75)的"四位一体"响应特征,即层序界面在野外露头剖面、钻井岩心、测井曲线及地震剖面上的特征,结果表明:层序界面在露头剖面、钻井岩心上通常为不整合或冲刷侵蚀面,在测井曲线上表现为突变,在地震剖面上表现为上超、下超或削截。进而详细论述了层序界面形成的油气地质意义,具体表现为:(1)层序界面反映了关键时期盆地性质的转化;(2)层序界面为油气运移的重要通道;(3)层序界面有利于圈闭的形成。该研究成果将为塔里木盆地志留系—泥盆系的进一步油气勘探提供重要的基础地质资料。
Based on detailed observation of outcrops of basin rim and the typical drilling cores in basin,analysis of well logs and interpretation of seismic cross-section,the "four-in-one"response characteristic of critical sequence boundary surfaces during the sedimentary evolution of Silurian to Devonian in Tarim Basin are detailedly researched(including S / O sequence boundary surface,corresponding to T0 7 in seismic cross-section;sequence boundary surface between Upper Silurian and Lower-Middle Silurian,corresponds to T1 6 in seismic cross-section;sequence boundary surface between Upper Devonian and Middle Devonian,corresponds to T0 6 in seismic cross-section;sequence boundary surface between Carboniferous and Devonian,corresponds to T7 5 in seismic cross-section),in other words,characteristics of sequence boundary surfaces in outcrops,cores,well logs and seismic cross-section.The results show that the sequence boundary surfaces display unconformity in outcrops and cores,saltation in well logs and uplap,downlap or truncation in seismic cross-section.Afterwards,the petroleum geological significance of sequence boundary surface formation is detailedly elaborated as follows:(1)the sequence boundary reflects the conversion of the basin nature in critical period;(2)the sequence boundary is an important channel for oil and gas migration;(3)the sequence boundary surfaces are beneficial to the formation of trap.The acquisition of the thesis research will provide an important foundational geological data for further oil and gas exploration of Silurian to Devonian in Tarim Basin.
Based on detailed observation of outcrops of basin rim and the typical drilling cores in basin,analysis of well logs and interpretation of seismic cross-section,the "four-in-one"response characteristic of critical sequence boundary surfaces during the sedimentary evolution of Silurian to Devonian in Tarim Basin are detailedly researched(including S / O sequence boundary surface,corresponding to T0 7 in seismic cross-section;sequence boundary surface between Upper Silurian and Lower-Middle Silurian,corresponds to T1 6 in seismic cross-section;sequence boundary surface between Upper Devonian and Middle Devonian,corresponds to T0 6 in seismic cross-section;sequence boundary surface between Carboniferous and Devonian,corresponds to T7 5 in seismic cross-section),in other words,characteristics of sequence boundary surfaces in outcrops,cores,well logs and seismic cross-section.The results show that the sequence boundary surfaces display unconformity in outcrops and cores,saltation in well logs and uplap,downlap or truncation in seismic cross-section.Afterwards,the petroleum geological significance of sequence boundary surface formation is detailedly elaborated as follows:(1)the sequence boundary reflects the conversion of the basin nature in critical period;(2)the sequence boundary is an important channel for oil and gas migration;(3)the sequence boundary surfaces are beneficial to the formation of trap.The acquisition of the thesis research will provide an important foundational geological data for further oil and gas exploration of Silurian to Devonian in Tarim Basin.
引文
[1]顾家裕.沉积相与油气[M].北京:石油工业出版社,1994:1-309.
[2]顾家裕.塔里木盆地沉积层序特征及其演化[M].北京:石油工业出版社,1996:1-140.
[3]梁狄刚,贾承造.塔里木盆地石油地质研究新进展[M].北京:科学出版社,1996:54-66.
[4]贾承造.中国塔里木盆地构造特征与油气[M].北京:石油工业出版社,1997:1-324.
[5]贾承造,魏国齐.“九五”期间塔里木构造研究成果概述[J].石油勘探与开发,2003,30(1):11-14.
[6]贾承造,张师本,吴绍祖,等.塔里木盆地及周边地层(上册)[M].北京:科学出版社,2003:111-157.
[7]汤良杰.略论塔里木古生代盆地演化[J].现代地质,1997,11(1):14-20.
[8]刘大锰,金奎励,王凌志.塔里木盆地志留系沥青砂岩及其成因[J].现代地质,1999,13(2):169-175.
[9]朱筱敏,王贵文,谢庆宾.塔里木盆地志留系层序地层特征[J].古地理学报,2001,3(2):64-715.
[10]朱筱敏,王贵文,谢庆宾.塔里木盆地志留系沉积体系及分布特征[J].石油大学学报:自然科学版,2002,26(3):5-12.
[11]刘家铎,张哨楠,田景春,等.塔里木盆地志留—泥盆系沉积体系及其勘探方向讨论[J].成都理工大学学报:自然科学版,2004,31(6):654-657.
[12]王少依,张惠良,寿建峰,等.塔中隆起北斜坡志留系储层特征及控制因素[J].成都理工大学学报:自然科学版,2004,31(2):148-152.
[13]朱如凯,罗平,何东博,等.塔里木盆地塔中地区志留系柯坪塔格组沉积相与沉积模式[J].古地理学报,2005,7(2):197-206.
[14]刘金华,张世奇,魏垂高.塔里木盆地志留系可容空间变化特征及其与油气成藏的关系[J].石油勘探与开发,2006,33(6):702-706.
[15]林畅松.沉积盆地的构造地层分析——以中国构造活动盆地研究为例[J].现代地质,2006,20(2):185-194.
[16]郭少斌,洪克岩.塔里木盆地志留系—泥盆系层序地层及有利储层分布[J].石油学报,2007,28(3):44-50.
[17]贾进华,张宝民,朱世海,等.塔里木盆地志留纪地层、沉积特征与岩相古地理[J].古地理学报,2006,8(3):339-352.
[18]王成林,张惠良,李玉文,等.塔里木盆地志留系划分、对比及其地质意义[J].新疆石油地质,2007,28(2):185-188.
[19]王显东,姜振学,庞雄奇.塔里木盆地志留系古油藏规模探讨[J].西南石油大学学报:自然科学版,2008,30(3):13-16.
[20]郭长敏.塔里木盆地志留系柯坪塔格组沉积相及平面展布[J].天然气技术,2008,12(1):19-22.
[2]顾家裕.塔里木盆地沉积层序特征及其演化[M].北京:石油工业出版社,1996:1-140.
[3]梁狄刚,贾承造.塔里木盆地石油地质研究新进展[M].北京:科学出版社,1996:54-66.
[4]贾承造.中国塔里木盆地构造特征与油气[M].北京:石油工业出版社,1997:1-324.
[5]贾承造,魏国齐.“九五”期间塔里木构造研究成果概述[J].石油勘探与开发,2003,30(1):11-14.
[6]贾承造,张师本,吴绍祖,等.塔里木盆地及周边地层(上册)[M].北京:科学出版社,2003:111-157.
[7]汤良杰.略论塔里木古生代盆地演化[J].现代地质,1997,11(1):14-20.
[8]刘大锰,金奎励,王凌志.塔里木盆地志留系沥青砂岩及其成因[J].现代地质,1999,13(2):169-175.
[9]朱筱敏,王贵文,谢庆宾.塔里木盆地志留系层序地层特征[J].古地理学报,2001,3(2):64-715.
[10]朱筱敏,王贵文,谢庆宾.塔里木盆地志留系沉积体系及分布特征[J].石油大学学报:自然科学版,2002,26(3):5-12.
[11]刘家铎,张哨楠,田景春,等.塔里木盆地志留—泥盆系沉积体系及其勘探方向讨论[J].成都理工大学学报:自然科学版,2004,31(6):654-657.
[12]王少依,张惠良,寿建峰,等.塔中隆起北斜坡志留系储层特征及控制因素[J].成都理工大学学报:自然科学版,2004,31(2):148-152.
[13]朱如凯,罗平,何东博,等.塔里木盆地塔中地区志留系柯坪塔格组沉积相与沉积模式[J].古地理学报,2005,7(2):197-206.
[14]刘金华,张世奇,魏垂高.塔里木盆地志留系可容空间变化特征及其与油气成藏的关系[J].石油勘探与开发,2006,33(6):702-706.
[15]林畅松.沉积盆地的构造地层分析——以中国构造活动盆地研究为例[J].现代地质,2006,20(2):185-194.
[16]郭少斌,洪克岩.塔里木盆地志留系—泥盆系层序地层及有利储层分布[J].石油学报,2007,28(3):44-50.
[17]贾进华,张宝民,朱世海,等.塔里木盆地志留纪地层、沉积特征与岩相古地理[J].古地理学报,2006,8(3):339-352.
[18]王成林,张惠良,李玉文,等.塔里木盆地志留系划分、对比及其地质意义[J].新疆石油地质,2007,28(2):185-188.
[19]王显东,姜振学,庞雄奇.塔里木盆地志留系古油藏规模探讨[J].西南石油大学学报:自然科学版,2008,30(3):13-16.
[20]郭长敏.塔里木盆地志留系柯坪塔格组沉积相及平面展布[J].天然气技术,2008,12(1):19-22.
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