嘉荫断陷白垩系沉积特征与石油地质条件
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摘要
对嘉荫断陷淘淇河组、永安村组、太平林场组、渔亮子组进行露头剖面、单井相分析、粒度分析,结合地震剖面解释及取样测试分析等方面的详细研究,查明断陷主要有河流相、扇三角洲相、三角洲相与湖泊相等沉积相类型。扇三角洲相主要发育于淘淇河组,三角洲主要发育于永安村组,湖泊相主要发育于太平林场组,河流相主要发育于渔亮子组;整体上构成了早期以两侧物源供给为主、后期以西侧物源供给为主、沉积中心逐渐向断陷中心退缩迁移的半深湖-扇三角洲与半深湖-三角洲沉积体系;断陷太平林场组具有中等—好的烃源岩,处于低熟至成熟阶段,具有一定的油气勘探前景。
According to the geological survey,single well facies analysis and grain size analysis of Taoqihe Formation,Yongancun Formation,Taipinglinchang Formation and Yuliangzi Formation in Jiayin Depression,combining with seismic section interpretation and sampling test analysis,it is held that fluvial facies,fan delta facies,delta facies and lacustrine facies are developed in Jiayin Depression. The fan delta facies developed mainly in Taoqihe Formation,the delta facies developed mainly in Yongancun Formation,the lacustrine facies developed mainly in Taipinglinchang Formation,and the fluvial facies developed mainly in Yuliangzi Formation. On the whole,Jiayin Depression is a semi-deep lake-fan delta and semi-deep lake-delta sedimentary system,its source supply comes mainly from both sides in the early stage,and mainly from the west in the later stage,and its sedimentary center gradually retreats to the fault depression center. Taipinglinchang Formation is middle-good source rock of low maturity,and it has certain prospects for oil and gas exploration.
According to the geological survey,single well facies analysis and grain size analysis of Taoqihe Formation,Yongancun Formation,Taipinglinchang Formation and Yuliangzi Formation in Jiayin Depression,combining with seismic section interpretation and sampling test analysis,it is held that fluvial facies,fan delta facies,delta facies and lacustrine facies are developed in Jiayin Depression. The fan delta facies developed mainly in Taoqihe Formation,the delta facies developed mainly in Yongancun Formation,the lacustrine facies developed mainly in Taipinglinchang Formation,and the fluvial facies developed mainly in Yuliangzi Formation. On the whole,Jiayin Depression is a semi-deep lake-fan delta and semi-deep lake-delta sedimentary system,its source supply comes mainly from both sides in the early stage,and mainly from the west in the later stage,and its sedimentary center gradually retreats to the fault depression center. Taipinglinchang Formation is middle-good source rock of low maturity,and it has certain prospects for oil and gas exploration.
引文
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[2]王旖旎.孙吴—嘉荫盆地地层序列及盆地演化[D].长春:吉林大学,2008.
[3]李健,张霞,刘招君.孙吴-嘉荫盆地白垩系淘淇河组水下重力流沉积特征[J].沉积与特提斯地质,2013,33(4):22-32.LI Jian,ZHANG Xia,LIU Zhaojun. Depositional characteristics of the subaqueous gravity flow deposits from the Cretaceous Taoqihe Formation in the Sunwu-Jiayin Basin,Heilongjiang[J]. Sedimentary Geology and Tethyan Geology,2013,33(4):22-32.
[4]朱彦平.孙吴-嘉荫盆地孙吴断陷重磁研究进展[J].科学技术与工程,2011,11(15):3527-3530.ZHU Yanping. Research progress of gravity and magnetic of Sunwu Fault-depressionin Sunwu-Jiayin Basin[J]. Science Technology and Engineering,2011,11(15):3527-3530.
[5]田梦.孙吴—嘉荫盆地地层序列、盆地演化及含油气远景[D].长春:吉林大学,2008.
[6]赵学钦,陈汉林,杨树锋,等.孙吴-嘉荫盆地中新生代构造特征及演化[J].中国矿业大学学报,2012,41(4):598-606.ZHAO Xueqin,CHEN Hanlin,YANG Shufeng,et al.Structural features and evolution of the Sunwu-Jiayin Basin from Mesozoic to Cenozoic[J]. Journal of China Universityof Mining&Technology,2012,41(4):598-606.
[7]杨建国,邵曌一,吴河勇,等.黑龙江北部孙吴—嘉荫盆地沉积相类型及其演化[J].地质科学,2008(4):648-660.
[8]杨建国,吴河勇,王洪伟,等.黑龙江北部孙吴—嘉荫盆地构造特征、演化及石油地质条件[J].地质科学,2009,44(2):679-691.YANG Jianguo,WU Heyong,WANG Hongwei,et al.Structural features,evolution and petroleum geological conditions of the Sunwu-Jiayin Basin in northern Heilongjiang Province[J]. Chinese Journal of Geology,2009,44(2):679-691.
[9]邵曌一.孙吴—嘉荫盆地石油地质潜力分析[D].大庆:大庆石油学院,2009.
[10]李佳.中国东北地区侏罗纪岩相古地理特征[D].青岛:山东科技大学,2017.
[11]张雷.孙吴—嘉荫盆地白垩纪沉积特征与充填序列[D].长春:吉林大学,2007.
[12]彭向东,李蔚伟,李晓敏,等.黑龙江省嘉荫县乌拉嘎断陷中、新生代地层序列与盆地演化[J].吉林大学学报(地球科学版),2011,41(1):86-92.PENG Xiangdong,LI Weiwei,LI xiaomin,et al. Mesozoic and Cenozoic stratigraphic sequences and basin evolution in Wulaga Fault-Depression,Jiayin country,Heilongjiang province[J]. Journal of Jilin University(Earth science Edition),2011,41(1):86-92.
[13]杨国良.孙吴—嘉荫中—新生代盆地组成、构造与盆地演化[D].北京:中国地质大学(北京),2008.
[14]刘彩燕,潘树新,梁苏娟.松辽盆地西部地区地震沉积相研究[J].地球物理学进展,2017,32(5):2044-2050.LIU Caiyan,PAN Shuxin,LIANG Sujuan. Seismic-sedimentologic facies of western area of Songliao Basin[J]. Progress in Geophysics,2017,32(5):2044-2050.
[15]樊馥.孙吴—嘉荫盆地太平林场组烃源岩有机地球化学特征及沉积环境研究[D].长春:吉林大学,2007.
[16]柳广第,张厚福.石油地质学[M].北京:石油工业出版社,2009.
[17]王蛟,姜在兴,操应长,等.山东东营凹陷永921地区沙四上亚段扇三角洲沉积与油气[J].吉林大学学报(地球科学版),2005,(6):725-731.WANG Jiao,JIANG Zaixing,Cao Yingchang,et al. Fan delta deposits and relation to hydrocarbon of Upper Es4at Yong 921 Area in Dongying Depression[J]. Journal of Jilin University(Earth science Edition),2005,(6):725-731.
[18]王志坤,王多云,郑希民,等.陕甘宁盆地陇东地区三叠系延长统长6—长8储层沉积特征及物性分析[J].天然气地球科学,2003(5):380-385.WANG Zhikun,WANG Duoyun,ZHENG Ximin,et al.Depositional characteristics and physical behavior analysis of the Chang 6-8 reservoir of Triassic Yangchang Formation in Longdong Area,Shanganning[J]. Natural Gas Geoscience,2003(5):380-385.
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