准噶尔盆地西北缘车排子地区下白垩统层序地层与沉积演化
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摘要
以层序地层学理论为依据,综合运用地震、钻井、测井、野外露头和古生物资料,在井-震联合标定的基础上,对准噶尔盆地西北缘车排子地区下白垩统层序地层及沉积演化进行研究。结果表明:下白垩统可划分为2个三级层序;下部层序KSI结构发育完整,低位体系域以辫状河和扇三角洲沉积为主,下切谷特征明显,水进体系域发育滨浅湖沉积,高位体系域发育扇三角洲、滨浅湖沉积;上部层序KSII低位体系域不发育,水进体系域主要发育滨浅湖沉积,高位体系域在湖平面缓慢下降、陆源碎屑物质供给不断减少的环境下发育曲流河、扇三角洲、滨浅湖沉积;下白垩统沉积建造反映研究区的沉积演化具有一定旋回性,早白垩世古气候变化对层序的发育起重要的控制作用。
Based on the theory of sequence stratigraphy,the sequence stratigraphy and sedimentary evolution of Lower Cretaceous series in Chepaizi area,northweastern margin of Junggar Basin were studied by comprehensive application of seismic data,drilling data,logging,outcrop data,paleontological data and well-seismic calibration. The results show that the Lower Cretaceous can be divided into two third-order sequences.The lower part of sequence KSI develops well.The lowstand system tract(LST) is dominated by braided river and fan-delta.The feature of down cutting valley is obvious.Transgressive system tract(TST) is mostly made up of shoreface/offshore deposits.The highstand system tract(HST) mostly consists of fan-delta and shoreface/offshore deposits.The top part of sequence KSII can be classified into 2 system tracts.The TST is made up of shoreface/offshore deposits.The HST mainly consists of meandering river,fan-delta and shoreface/offshore deposits in the condition of the slowly falling lake level and gradually decreasing supply of terrestrial clastic.The sedimentary construction of Lower Crataceous shows that sediment evolution of the research square has the character of cyclicity.The ancient climate change of Lower Cretaceous plays an important role during the sequence development.
Based on the theory of sequence stratigraphy,the sequence stratigraphy and sedimentary evolution of Lower Cretaceous series in Chepaizi area,northweastern margin of Junggar Basin were studied by comprehensive application of seismic data,drilling data,logging,outcrop data,paleontological data and well-seismic calibration. The results show that the Lower Cretaceous can be divided into two third-order sequences.The lower part of sequence KSI develops well.The lowstand system tract(LST) is dominated by braided river and fan-delta.The feature of down cutting valley is obvious.Transgressive system tract(TST) is mostly made up of shoreface/offshore deposits.The highstand system tract(HST) mostly consists of fan-delta and shoreface/offshore deposits.The top part of sequence KSII can be classified into 2 system tracts.The TST is made up of shoreface/offshore deposits.The HST mainly consists of meandering river,fan-delta and shoreface/offshore deposits in the condition of the slowly falling lake level and gradually decreasing supply of terrestrial clastic.The sedimentary construction of Lower Crataceous shows that sediment evolution of the research square has the character of cyclicity.The ancient climate change of Lower Cretaceous plays an important role during the sequence development.
引文
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[17]顾家裕,郭彬程,张兴阳.中国陆相盆地层序地层格架及模式[J].石油勘探与开发,2005,32(5):11-15.GU Jia-yu,GUO Bin-cheng,ZHANG Xing-yang.Se-quence stratigraphic framework and model of the conti-nental basins in China[J].Petroleum Exploration andDevelopment,2005,32(5):11-15.
[2]高雷,朱筱敏,吕雪雁.准噶尔盆地三个泉地区下白垩统沉积相特征[J].石油大学学报:自然科学版,2004,28(1):5-9.GAO Lei,ZHU Xiao-min,LXue-yan.Sedimentary fa-cies of lower cretaceous in Sangequan area of Junggar Ba-sin[J].Journal of University of Petroleum,China(Edi-tion of Natural Science),2004,28(1):5-9.
[3]邢凤存,陆永潮,刘传虎,等车排子地区构造-古地貌特征及其控砂机制[J].石油与天然气地质,2008,29(1):78-83.XING Feng-cun,LU Yong-chao,LIU Chuan-hu,et al.Structura-paleogeomorphologic features of Chepaizi areaand mechanism of their control on sandbodies[J].Oil&Gas Geology,2008,29(1):78-83.
[4]向奎.准噶尔盆地车排子地区下切谷沉积体系及有利勘探方向[J].中国石油大学学报:自然科学版,2007,31(6):2-5.XIANG Kui.Entrenched valley depositional system andadvantageous exploration direction of Chepaizi area inJunggar Basin[J],Journal of China University of Petrole-um(Edition of Natural Science),2007,31(6):2-5.
[5]VAIL P R.Seismic stratigraphy interpretation using se-quence stratigraphy[J].AAPG Bulletin,1987,27:1-10.
[6]顾家裕.陆相盆地层序地层学格架概念及模式[J].石油勘探与开发,1995,22(4):6-10.GU Jia-yu,Framework concepts and models of sequencestratigraphy in nonmarine petroliferous basin[J].Petrole-um Exploration and Development,1995,22(4):6-10.
[7]张立强,罗晓容,何登发,等.准噶尔盆地南缘下白垩统层序界面的识别[J].沉积学报,2004,22(4):636-643.ZHANG Li-qiang,LUO Xiao-rong,HE Deng-fa,et al.Sequence boundaries of the lower cretaceous,southernJunggar Basin[J].Acta Sedimentologica Sinca,2004,22(4):636-643.
[8]杨怀宇,陈世悦,刘继山,等.准噶尔盆地乌-夏地区二叠系夏子街组层序格架[J].中国石油大学学报:自然科学版,2008,32(3):1-6.YANG Huai-yu,CHEN Shi-yue,LIU Ji-shan,et al.Se-quence framework in Xiazijie formation of Permianin Wu-xia area of Junggar Basin[J].Journal of China Universityof Petroleum(Edition of Natural Science),2008,32(3):1-6.
[9]李德江,杨俊生,朱筱敏.准噶尔盆地层序地层学研究[J].西安石油大学学报:自然科学版,2005,20(3):60-66.LI De-jiang,YANG Jun-sheng,ZHU Xiao-min.Study onthe sequence stratigraphy of Zhungeer Basin[J].Journalof Xian Shiyou University(Edition of Natural Science),2008,32(3):1-6.
[10]查明,李秀鹏,曾洪流,等.准噶尔盆地乌夏地区中下三叠统地震沉积学研究[J].中国石油大学学报:自然科学版,2010,34(6):8-12.ZHA Ming,LI Xiu-peng,ZENG Hong-liu,et al.Seis-mic sedimentology study of Middle and Lower Tri assicin Wu Xia area,Junggar Basin[J].Journal of China U-niversity of Petroleum(Edition of Natural Science),2010,34(6):8-12.
[11]刘媛,朱筱敏,袁红旗,等.三肇凹陷白垩系姚一段葡萄花油层浅水三角洲高分辨率层序地层新认识[J].中国石油大学学报:自然科学版,2010,34(4):7-12.LIU Yuan,ZHU Xiao-min,YUAN Hong-qi,et al.Newexplanation for shallow delta high resolution sequencestratigraphy of Putaohua oil bearing layer of member 1 ofYaojia formation of Cretaceous in Sanzhao sag[J].Jour-nal of China University of Petroleum(Edition of NaturalScience),2010,34(4):7-12.
[12]董臣强.准噶尔盆地车排子地区成藏特征分析[J].油气地球物理,2008,6(4):34-37.DONG Chen-qiang.The analysis of the reservoir-formingcharacteristics of the Chepaizi area in Zhugar Basin[J].Petroleum Geophysics,2008,6(4):34-37.
[13]杨景林.准噶尔盆地白垩纪轮藻植物群及相关的生物地层和层序地层研究[D].南京:中国科学院南京地质古生物研究所,2003:72-108.YANG Jing-lin.The research of charophytes flora andrelated biostratigraphy and sequence of Cretaceous inJunggar Basin[D].Nanjing:Nanjing Institute of Geolo-gy and Palaeontology,Chinese Academy of Sciences,2003:72-108.
[14]谢玉洪,王振峰,解习农,等.莺歌海盆地坡折带特征及其对沉积体系的控制[J].地球科学——中国地质大学学报,2004,29(5):569-574.XIE Yu-hong,WANG Zhen-feng,XIE Xi-nong,et al.Patterns of Slope-Break Zone and Their Depositional mod-els in the Yinggehai Basin[J].Earth Science—Journal ofChina University of Geosciences,2004,29(5):569-574.
[15]杨帆,于兴河,张峰,等.冀中坳陷饶阳凹陷蠡县斜坡带层序地层发育模式及主控因素[J].古地理学报,2010,12(1):82-89.YANG Fan,YU Xing-he,ZHANG Feng,et al.Se-quence stratigraphic model and key controlling factors ofLixian Slope in Raoyang Sag,Central Hebei depression[J].Journal of Palaeogeolography,2010,12(1):82-89.
[16]纪友亮,蒙启安,曹瑞成,等.贝南凹陷古地形对层序结构及沉积充填的控制[J].同济大学学报:自然科学版,2009,37(11):1541-1545.JI You-liang,MENG Qi-an,CAO Rui-cheng,et al.Control of paleo-morphology to sequence and sedimentarysystem in South Beir depression[J].Journal of Tong-jiUniversity(Natural Science Edition).2009,37(11):1541-1545.
[17]顾家裕,郭彬程,张兴阳.中国陆相盆地层序地层格架及模式[J].石油勘探与开发,2005,32(5):11-15.GU Jia-yu,GUO Bin-cheng,ZHANG Xing-yang.Se-quence stratigraphic framework and model of the conti-nental basins in China[J].Petroleum Exploration andDevelopment,2005,32(5):11-15.
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