济阳坳陷上古生界层序划分与等时格架建立
|
摘要
济阳坳陷上古生界地层埋藏深,受后期多期次构造运动的改造,剥蚀严重,个别地区缺失,因此,在寻找晚古生代原生气藏方面至今没能取得重大突破。为此,应用层序地层学原理和基准面旋回方法,系统地对上古生界残留地层进行了层序地层特征研究,建立了层序界面和最大海泛面识别标志,并对体系域内部特征进行了描述。对20多口井中上古生界层序地层特征的研究结果表明,济阳坳陷上古生界整体表现为1个超层序,在超层序内部划分了6个层序。对层序沉积演化特征的分析表明,该区层序1和层序2低位体系域不发育,其它层序均由低位体系域、海侵体系域和高位体系域组成。对体系域内部特征的描述表明,海侵体系域为由一系列退积叠置构成,高位体系域则由进积叠置构成。根据层序界面的标定结果,借助于测井约束反演技术,在区域地震剖面上对层序界面进行了追踪解释,建立了层序的等时地层格架。
The detailed sequence stratigraphic characteristics were researched over more than 20 wells about Upper Pale- ozoic erathem using P.R.Vail sequence stratigraphic princi- ple and analysis of base-level cycle in Jiyang depression.It was thought that the Upper Paleozoic erathem is 1 super (two-class)sequences,which was divided into 6 sequences (three-class).According to sequence depositional evolution characteristics,others were made up of low system tract, transgressive system tract and high system tract except that sequence 1 and sequence 2 did not have low system tract.Identifying criterion of the sequence interface and maximum marine surface was built,and internal character- istics in system tract were described.Transgressive system tract were superimposed by retrogradation,and high sys- tem tract were superimposed by progradation.According to sequence boundary calibration,sequence boundaries were interpreted in isochronal stratigraphie frame with logging constrained inversion technology.
The detailed sequence stratigraphic characteristics were researched over more than 20 wells about Upper Pale- ozoic erathem using P.R.Vail sequence stratigraphic princi- ple and analysis of base-level cycle in Jiyang depression.It was thought that the Upper Paleozoic erathem is 1 super (two-class)sequences,which was divided into 6 sequences (three-class).According to sequence depositional evolution characteristics,others were made up of low system tract, transgressive system tract and high system tract except that sequence 1 and sequence 2 did not have low system tract.Identifying criterion of the sequence interface and maximum marine surface was built,and internal character- istics in system tract were described.Transgressive system tract were superimposed by retrogradation,and high sys- tem tract were superimposed by progradation.According to sequence boundary calibration,sequence boundaries were interpreted in isochronal stratigraphie frame with logging constrained inversion technology.
引文
1 武法东，陈钟惠，张守良，等．华北晚古生代含煤盆地层序地层初探[J]．中国煤田地质，1994，6(1)：11～18
2 李增学，魏久传．内陆海含煤盆地Ⅲ级层序的划分原则及基本构成特点[J]．地质科学，1996，31(2)：186～192
3 陈世悦，刘焕杰．华北晚古生代层序地层模式及其演化[J]．煤田地质与勘探，1995，23(5)：1～5
4 宋国奇．胜利油区古生界地质特征及油气潜力[M]．武汉：中国地质大学出版社，2000．1～35
5 翟爱军，邓宏文．鄂尔多斯盆地上古生界层序地层与储层预测[J]．石油与天然气地质，1999，20(4)：336～340
6 刘殊．甘其刚．海相及湖相碳酸盐岩储层预测[J]．石油物探，2003，42(2)：169～178
7 付志方，张本书．南阳凹陷层序地层学研究[J]．石油物探，2003，43(3)：283～237
8 樊太亮，李庆谋．基准面旋回变化分析技术及其应用[J]．石油与天然气地质，1996，18(2)：108～114
2 李增学，魏久传．内陆海含煤盆地Ⅲ级层序的划分原则及基本构成特点[J]．地质科学，1996，31(2)：186～192
3 陈世悦，刘焕杰．华北晚古生代层序地层模式及其演化[J]．煤田地质与勘探，1995，23(5)：1～5
4 宋国奇．胜利油区古生界地质特征及油气潜力[M]．武汉：中国地质大学出版社，2000．1～35
5 翟爱军，邓宏文．鄂尔多斯盆地上古生界层序地层与储层预测[J]．石油与天然气地质，1999，20(4)：336～340
6 刘殊．甘其刚．海相及湖相碳酸盐岩储层预测[J]．石油物探，2003，42(2)：169～178
7 付志方，张本书．南阳凹陷层序地层学研究[J]．石油物探，2003，43(3)：283～237
8 樊太亮，李庆谋．基准面旋回变化分析技术及其应用[J]．石油与天然气地质，1996，18(2)：108～114
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心