冀中坳陷古近系沙河街组三段中亚段岩相古地理
摘要
冀中坳陷古近系始新统沙河街组三段中亚段地层全区广泛分布,在钻井、岩心和地震资料等定性和定量资料基础上,采用冯增昭教授倡导的单因素分析多因素综合作图法,编制了各层序格架下的岩相古地理图。冀中坳陷古近系沙三中亚段主要发育的沉积相,包括冲积扇、河流、(扇)辫状河三角洲、近岸湖底扇及湖泊。研究结果表明:沙三中亚段主要发育大型冲积扇—河流—(扇)辫状河三角洲—湖泊沉积体系,并处在冀中坳陷始新统早期的湖盆断陷扩张深陷期沉积这一演化阶段。
The stratum of Paleogene System at Shahejie formation 3rd Middle sub-member in Jizhong depression is universal distribution.On the base of the welldrilling,core and quake data etc.as characterization and quantification,the lithofacies paleogeography maps of Paleogene System at Shahejie formation 3rd Middle sub-member in Jizhong depression are compiled with the single factor analysis and multifactor comprehensive mapping method proposed by Feng Zengzhao Prof.The stratum of Paleogene System at Shahejie formation 3rd Middle sub-member mainly develops some sedimentary facies including alluvial fan,stream,(fan)braided river delta,sublacustrine fan in shore and lake.The result of research shows that the sequence stratum mainly develop umbrella alluvial fan-stream-(fan)braided river delta-lake sedimentary system.Jizhong depression of Paleogen System had gone through the two phases of sedimentary evolvement for the deposit(SQ3)of fault expansive up to the chin age for basin in earlier Eocene Series.
The stratum of Paleogene System at Shahejie formation 3rd Middle sub-member in Jizhong depression is universal distribution.On the base of the welldrilling,core and quake data etc.as characterization and quantification,the lithofacies paleogeography maps of Paleogene System at Shahejie formation 3rd Middle sub-member in Jizhong depression are compiled with the single factor analysis and multifactor comprehensive mapping method proposed by Feng Zengzhao Prof.The stratum of Paleogene System at Shahejie formation 3rd Middle sub-member mainly develops some sedimentary facies including alluvial fan,stream,(fan)braided river delta,sublacustrine fan in shore and lake.The result of research shows that the sequence stratum mainly develop umbrella alluvial fan-stream-(fan)braided river delta-lake sedimentary system.Jizhong depression of Paleogen System had gone through the two phases of sedimentary evolvement for the deposit(SQ3)of fault expansive up to the chin age for basin in earlier Eocene Series.
引文
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2杜金虎,邹伟宏,等.冀中坳陷古潜山复式油气聚集区.北京:科学出版社,2002:109—277
3韩春元,郭永军,等.冀中探区重点区带有利沉积相与储层评价研究.华北油田分公司勘探开发研究院(内部资料),2002
4闫保义,黄艳,等.冀中中部石油地质综合研究及预探目标评价.华北油田分公司地球物理勘探研究院(内部资料),2004
5冯增昭.单因素分析综合作图法——岩相古地理学方法论.沉积学报,1992;10(3):70—77
6冯增昭.单因素分析综合作图法——岩相古地理学方法论.石油工业出版社,1994:662—685
7单敬福,纪友亮,等.基于神经网络和开窗技术的储层渗透率的预测方法——以大庆萨尔图油田葡萄花油层组PⅠ1—PⅠ4小层砂岩为例.地质科学,2007;42(2):395—402
8金振奎,张响响,等.青海砂西油田古近系下干柴沟组下部沉积相定量研究.古地理学报,2002;4(4):99—107
9金振奎,齐聪伟,等.柴达木盆地北缘结绿素-红山地区古新统至中新统沉积相.古地理学报,2002;8(3):377—388
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