冀中坳陷饶阳凹陷古近系层序地层学及演化模式
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摘要
根据陆相地层层序在地震剖面和电测曲线上的识别标志、岩石类型组合特点以及古生物等方面的特征,将饶阳凹陷古近系划分出3个二级层序、10个三级层序。其中层序Ⅰ、Ⅱ为裂谷初始期湖泊层序,层序Ⅲ、Ⅳ、Ⅴ、Ⅵ、Ⅶ为裂谷强活动期湖泊层序,层序Ⅷ、Ⅸ、Ⅹ为河流层序。其中裂谷期湖泊层序可以划分为3个体系域,即低位体系域、湖侵体系域和高位体系域,而河流层序可划分为基准面上升体系域和基准面下降体系域。针对研究区目的层段层序发育的特点,在层序地层单元划分和对比的基础上,结合构造发育史和地层厚度的变化所反映的古地形,建立了该区层序地层学演化模式,并初步分析了不同层序演化模式与油气的关系,预测了不同层序的地层油藏。
Based on the identification features of continental stratigraphic sequences on seismic profiles and wire-line logs,the characteristics of lithologic combination and palaeontology,the Paleogene in the Raoyang Sag is divided into three second-order sequences and ten third-order sequences.Third-order sequencesⅠ and Ⅱ are lacustrine sequences developed in the initial rifting phase of basin formation,while sequencesⅢ,Ⅳ,Ⅴ,Ⅵ and Ⅶ are lacustrine sequences developed in the strong rifting phase,and sequences Ⅷ,Ⅸ and Ⅹare fluvial sequences.Lacustrine sequences can be divided into three system tracts:low stand,transgressive and high stand system tracts.Fluvial sequences can be divided into base level rising and base level falling system tracts.Based on the identification and correlation of sequence stratigraphic units,sequence stratigraphic models of the target strata in the study area are established according to the characteristics of the stratigraphic sequences,the tectonic evolution history and palaeotopography reflected by the variation of strata thickness.A preliminary analysis is made on the relationship between sequence stratigraphic models and oil-gas exploration potentials,and the stratigraphic oil pools in each sequences are predicted.
Based on the identification features of continental stratigraphic sequences on seismic profiles and wire-line logs,the characteristics of lithologic combination and palaeontology,the Paleogene in the Raoyang Sag is divided into three second-order sequences and ten third-order sequences.Third-order sequencesⅠ and Ⅱ are lacustrine sequences developed in the initial rifting phase of basin formation,while sequencesⅢ,Ⅳ,Ⅴ,Ⅵ and Ⅶ are lacustrine sequences developed in the strong rifting phase,and sequences Ⅷ,Ⅸ and Ⅹare fluvial sequences.Lacustrine sequences can be divided into three system tracts:low stand,transgressive and high stand system tracts.Fluvial sequences can be divided into base level rising and base level falling system tracts.Based on the identification and correlation of sequence stratigraphic units,sequence stratigraphic models of the target strata in the study area are established according to the characteristics of the stratigraphic sequences,the tectonic evolution history and palaeotopography reflected by the variation of strata thickness.A preliminary analysis is made on the relationship between sequence stratigraphic models and oil-gas exploration potentials,and the stratigraphic oil pools in each sequences are predicted.
引文
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顾家裕.1995.陆相湖盆层序地层学模式[J].石油勘探与开发,22(4):12-17.
纪友亮,冯建辉,王声朗,等.2003.东濮凹陷沙三段高频湖平面变化及低位砂体预测[J].高校地质学报,9(1):99-112.
纪友亮,冯建辉.2003.东濮凹陷古近系的低位三角洲沉积[J].石油勘探与开发,30(1):112-114.
纪友亮,张世奇.1996.陆相断陷湖盆层序地层学[M].北京:石油工业出版社,17-29.
纪友亮,张世奇,李红南.1994.东营凹陷下第三系陆相盆地层序地层学研究[J].地质论评,40(增刊):97-105.
吕希学,胡斌,姜在兴,等.2003.济阳坳陷车镇和沾化凹陷古近系沙河街组遗迹群落及其沉积环境[J].古地理学报,5(2):187-196.
穆立华,彭仕宓,尹志军,等.2003.冀东柳赞油田古近系沙河街组层序地层及岩相古地理[J].古地理学报,5(3):304-315.
胥菊珍,蒋飞虎,张孝义,等.2003.河南东濮凹陷古近系沙河街组盐岩沉积特征及成因[J].古地理学报,5(2):162-170.
张世奇,纪友亮.1996.陆相断陷湖盆层序地层学模式探讨[J].石油勘探与开发,23(5):23-28.
张世奇,纪友亮.1997.东营凹陷下第三系湖相密集段特征[J].石油大学学报,21(2):4-8.
张永生,杨玉卿,漆智先,等.2003.江汉盆地潜江凹陷古近系潜江组含盐岩系沉积特征与沉积环境[J].古地理学报,5(1):29-35.
张玉宾.1997.济阳坳陷及邻近地区海侵问题之我见[J].岩相古地理,17(1):45-49.
张文朝,崔周旗,韩春元,等.2001.冀中坳陷老第三纪湖盆演化与油气[J].古地理学报,3(1):45-49.
DengHongwen.1995.AnewschoolofthoughtinsequencestratigraphicstudiesinU.S.:High-resolutionsequencestratigraphy[J].Oil&GasGeology,16(2):89-97(inChinesewithEnglishabstract).
GuJiayu.1995.Thesequencestratigraphicmodleofterrestriallacustrinebasin[J].PetroleumExplorationandDevelopment,22(4):12-17(inChinesewithEnglishabstract).
JiYouliang,FengJianhui,WangShenglang,etal.2003.Highfrequencylakelevelchangeof3rdmemberofShahejieFormationandpredic-tionoflowstandsandbodyinDongpuDepression[J].GeologicalJournalofChinaUniversity,9(1):99-112(inChinesewithEng-lishabstract).
JiYouliang,FengJianhui.2003.Lowstanddeltasedimentaryofpaleo-geneinDongpuSag[J].PetroleumExplorationandDevelopment,30(1):112-114(inChinesewithEnglishabstract).
JiYouliang,ZhangShiqi.1996.TheSequenceStratigraphyofTerrestrialRiftLacustrineBasin[M].Beijing:PetroleumIndustryPress,17-29(inChinese).
JiYouliang,ZhangShiqi,LiHongnan.1994.ThestudyofsequencestratigraphyofterrestrialbasinoflowerTertiaryinDongyingDe-pression[J].GeologicalReview,40(suppl.):97-105(inChinesewithEnglishabstract).
L櫣Xixue,HuBin,JiangZaixing,etal.2003.IchnocoenosesandtheirsedimentaryenvironmentsoftheShahejieFormationofPaleogeneinChezhenandZhanhuaSags,JiyangDepression,ShandongProvince[J].JournalofPalaeogeography,5(2):187-196(inChi-nesewithEnglishabstract).
MuLihua,PengShimi,YinZhijun,etal.2003.SequencestratigraphyandlithofaciespalaeogeographyoftheShahejieFormationofPaleo-geneinLiuzanOilfield,easternHebeiProvince[J].JournalofPalaeogeography,5(3):304-315(inChinesewithEnglishab-stract).
XuJuzhen,JiangFeihu,ZhangXiaoyi,etal.2003.Sedimentarycharac-teristicsandoriginofsaltrockoftheShahejieFormationofPaleo-geneinDongpuSag,HenanProvince[J].JournalofPalaeo-geography,5(2):162-170(inChinesewithEnglishabstract).
ZhangShiqi,JiYouliang.1996.Thestudyofthemodleofsequencestratigraphyofterrestrialriftlacustrinebasin[J].PetroleumExplo-rationandDevelopment,23(5):23-28(inChinesewithEnglishabstract).
ZhangShiqi,JiYouliang.1997.Thecharacterofcondensedsectionofla-custrinebasinoflowerTertiaryinDongyingDepression[J].JournalofPetroleumUniversity,21(2):4-8(inChinesewithEnglishab-stract).
ZhangYongsheng,YangYuqing,QiZhixian,etal.2003.Sedimentarycharacteristicsandenvironmentsofsalt-bearingseriesoftheQian-jiangFormationofthePaleogeneinQianjiangSagofJianghanBasin[J].JournalofPalaeogeography,5(1):29-35(inChinesewithEnglishabstract).
ZhangYubin.1997.EarlyTertiarytransgressionsintheJiyangDepres-sionanditsadjacentareas[J].SedimentaryFaciesandPalaeo-geography,17(1):45-49(inChinese).
ZhangWenchao,CuiZhouqi,HanChunyuan,etal.2001.EvolutionofPalaeogenelacustrinebasinsandoilandgaspotentialsinthecentralHebeiDepression[J].JournalofPalaeogeography,3(1):45-49(inChinesewithEnglishabstract).
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