歧口凹陷歧深地区沙三段沉积体系演化特征及沉积模式
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摘要
通过岩心观察结果,结合钻井、测井及地震等资料,对歧深地区沙三段沉积特征进行了研究。结果表明:研究区沙三段主要发育4种沉积体系,即辫状河三角洲沉积体系、水下扇沉积体系、扇三角洲沉积体系和湖泊沉积体系。以单井沉积研究为基础,参考地震相与属性分析,同时结合砾岩厚度图、含砂率图及累计砂厚度图,编制了沙三段的沉积体系分布图,再现了歧深地区沙三段各层段的沉积体系空间展布特征。研究得出:歧深地区主要物源来自南部周清庄、西北部沈清庄及北部小站—葛沽;从盆缘至凹陷中心,研究区沙三段沉积体系分布属传统断陷湖盆充填模式,但以发育大规模远岸水下扇沉积为典型特征;歧深地区不同类型的构造-古地貌控制着沉积体系类型及其展布特征,而断层转换带则影响着沉积砂体的再分配。远岸水下扇的浊流水道为研究区最有利的储集相带,辫状河三角洲前缘的水下分流河道及河口坝次之,而扇三角洲前缘的河口坝及水下河道砂体再次。
According to core observation and considering drilling,well logging and seismic data,the sedimentary characteristics of the third member of Shahejie Formation in the Qishen area have been researched.The results show that four types of depositional systems composed of braided river delta,subaqueous fan,fan delta and lacustrine depositional system were developed in the third member of Shahejie Formation.Based on sedimentary lithofacies analysis of each borehole,taking seismic facies and attribute into account,and combined with conglomerate thickness,sand content rate and sand thickness,the sedimentary systems maps were made,in which the temporal and spatial distribution characteristics of each segment in the third member of Shahejie Formation were reconstructed in the Qishen area.The studies indicate that the dominate sources were from Zhouqinzhuang of the south,Shenqingzhuang of the northwest,and Xiaozhan-Gegu of the north.The distribution of sedimentary systems of the third member of Shahejie Formation in the Qishen area follows traditional filling model of fault basin,nevertheless extensive distal subaqueous fan is the representative characteristic in this study area.In the Qishen area,the types of depositional systems and their distribution are controlled by different types of structure-paleogeomorphology,whereas the fault transform zones dominate the redistribution of sand bodies.In the study area,the turbid channel deposits of distal subaqueous fan are the most favorable reservoir facies,followed by the underwater distributary channel and mouth bar deposits of braided river delta front,then the mouth bar and underwater distributary channel deposits of fan delta front are the third advantageous reservoir facies.
According to core observation and considering drilling,well logging and seismic data,the sedimentary characteristics of the third member of Shahejie Formation in the Qishen area have been researched.The results show that four types of depositional systems composed of braided river delta,subaqueous fan,fan delta and lacustrine depositional system were developed in the third member of Shahejie Formation.Based on sedimentary lithofacies analysis of each borehole,taking seismic facies and attribute into account,and combined with conglomerate thickness,sand content rate and sand thickness,the sedimentary systems maps were made,in which the temporal and spatial distribution characteristics of each segment in the third member of Shahejie Formation were reconstructed in the Qishen area.The studies indicate that the dominate sources were from Zhouqinzhuang of the south,Shenqingzhuang of the northwest,and Xiaozhan-Gegu of the north.The distribution of sedimentary systems of the third member of Shahejie Formation in the Qishen area follows traditional filling model of fault basin,nevertheless extensive distal subaqueous fan is the representative characteristic in this study area.In the Qishen area,the types of depositional systems and their distribution are controlled by different types of structure-paleogeomorphology,whereas the fault transform zones dominate the redistribution of sand bodies.In the study area,the turbid channel deposits of distal subaqueous fan are the most favorable reservoir facies,followed by the underwater distributary channel and mouth bar deposits of braided river delta front,then the mouth bar and underwater distributary channel deposits of fan delta front are the third advantageous reservoir facies.
引文
[1]蒲秀刚,陈长伟,周立宏,等.整体-局部-整体沉积体系分析在歧口凹陷沙三段的应用[J].西安石油大学学报:自然科学版,2011,26(2):8-19.
[2]王光奇,漆家福,岳云福.歧口凹陷及周缘新生代构造的成因和演化[J].地质科学,2003,38(2):230-240.
[3]吴立群,蒲秀刚,焦养泉,等.断陷盆地单因素精细取证下的沉积体系综合分析:以歧口凹陷古近系沙三二亚段为例[J].大地构造与成矿学,2010,34(4):499-511.
[4]荣辉,肖敦清,白小鸟,等.歧口凹陷中部古近系沙三一亚段水下扇沉积体系内部构成分析[J].大地构造与成矿,2010,34(4):520-528.
[5]陈平,苏俊青,陆永潮,等.歧口凹陷歧深地区沙三段层序地层格架及其演化[J].大地构造与成矿学,2010,34(4):529-535.
[6]周立宏,蒲秀刚,周建生,等.黄骅坳陷歧口凹陷古近系坡折体系聚砂控藏机制分析[J].石油实验地质,2011,33(4):371-377.
[7]樊敬亮,黄志全,樊卫花.歧口凹陷新生代构造演化与油气[J].吉林大学学报:地球科学版,2004,34(4):536-541.
[8]严德天,王华,王家豪,等.黄骅坳陷沙河街组层序地层样式及隐蔽圈闭预测[J].中国矿业大学学报,2008,37(1):30-37.
[9]姜在兴.沉积学[M].北京:石油工业出版社,2003:312-314.
[10]陈莹,林畅松,周小军,等.歧口凹陷古近系构造对沉积层序和砂体分布的控制[J].新疆石油地质,2006,27(3):302-305.
[11]吴元燕,付建林,周建生,等.歧口凹陷含油气系统及其评价[J].石油学报,2000,21(6):18-22.
[12]程日辉,王璞珺,刘万洙.构造断阶对沉积的控制:来自地震、测井和露头的实例[J].沉积学报,2003,21(2):255-259.
[13]冯有良.断陷湖盆沟谷及构造坡折对砂体的控制作用[J].石油学报,2006,27(1):13-16.
[14]任建业,陆永潮,张青林.断陷盆地构造坡折带形成机制及其对层序发育样式的控制[J].地球科学:中国地质大学学报,2004,29(5):596-602.
[15]侯宇光,何生,王冰洁,等.板桥凹陷构造坡折带对层序和沉积体系的控制[J].石油学报,2010,31(5):754-761.
[16]蒲秀刚,陈长伟,柳飒,等.歧口凹陷歧北斜坡沙三段挠曲坡折体系与岩性油气藏勘探[J].成都理工大学学报:自然科学版,2011,38(6):611-618.
[17]王纪祥,陈发景,李趁义.山东惠民凹陷伸展构造及调节带特征[J].现代地质,2003,17(2):203-208.
[18]梁富康,于兴河,慕小水,等.东濮凹陷南部沙三中段构造调节带对沉积体系的控制作用[J].现代地质,2011,25(1):55-61.
[2]王光奇,漆家福,岳云福.歧口凹陷及周缘新生代构造的成因和演化[J].地质科学,2003,38(2):230-240.
[3]吴立群,蒲秀刚,焦养泉,等.断陷盆地单因素精细取证下的沉积体系综合分析:以歧口凹陷古近系沙三二亚段为例[J].大地构造与成矿学,2010,34(4):499-511.
[4]荣辉,肖敦清,白小鸟,等.歧口凹陷中部古近系沙三一亚段水下扇沉积体系内部构成分析[J].大地构造与成矿,2010,34(4):520-528.
[5]陈平,苏俊青,陆永潮,等.歧口凹陷歧深地区沙三段层序地层格架及其演化[J].大地构造与成矿学,2010,34(4):529-535.
[6]周立宏,蒲秀刚,周建生,等.黄骅坳陷歧口凹陷古近系坡折体系聚砂控藏机制分析[J].石油实验地质,2011,33(4):371-377.
[7]樊敬亮,黄志全,樊卫花.歧口凹陷新生代构造演化与油气[J].吉林大学学报:地球科学版,2004,34(4):536-541.
[8]严德天,王华,王家豪,等.黄骅坳陷沙河街组层序地层样式及隐蔽圈闭预测[J].中国矿业大学学报,2008,37(1):30-37.
[9]姜在兴.沉积学[M].北京:石油工业出版社,2003:312-314.
[10]陈莹,林畅松,周小军,等.歧口凹陷古近系构造对沉积层序和砂体分布的控制[J].新疆石油地质,2006,27(3):302-305.
[11]吴元燕,付建林,周建生,等.歧口凹陷含油气系统及其评价[J].石油学报,2000,21(6):18-22.
[12]程日辉,王璞珺,刘万洙.构造断阶对沉积的控制:来自地震、测井和露头的实例[J].沉积学报,2003,21(2):255-259.
[13]冯有良.断陷湖盆沟谷及构造坡折对砂体的控制作用[J].石油学报,2006,27(1):13-16.
[14]任建业,陆永潮,张青林.断陷盆地构造坡折带形成机制及其对层序发育样式的控制[J].地球科学:中国地质大学学报,2004,29(5):596-602.
[15]侯宇光,何生,王冰洁,等.板桥凹陷构造坡折带对层序和沉积体系的控制[J].石油学报,2010,31(5):754-761.
[16]蒲秀刚,陈长伟,柳飒,等.歧口凹陷歧北斜坡沙三段挠曲坡折体系与岩性油气藏勘探[J].成都理工大学学报:自然科学版,2011,38(6):611-618.
[17]王纪祥,陈发景,李趁义.山东惠民凹陷伸展构造及调节带特征[J].现代地质,2003,17(2):203-208.
[18]梁富康,于兴河,慕小水,等.东濮凹陷南部沙三中段构造调节带对沉积体系的控制作用[J].现代地质,2011,25(1):55-61.
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