冀东柳赞油田古近系沙河街组层序地层及岩相古地理
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摘要
柳赞油田位于河北省滦南县与唐海县交界处 ,是冀东油田的主力油田之一 ,构造上处于燕山褶皱带前缘 ,渤海湾盆地南堡凹陷的东部。受柏各庄断层活动及古斜坡地形的影响 ,该区古近系沙三段地层属于近源快速堆积沉积 ,分选差 ,成熟度低 ,岩相复杂 ,为典型的扇三角洲沉积。通过对沉积特征和沉积相带展布的分析 ,建立了该段地层的扇三角洲沉积模式。以层序地层学原理和方法为手段 ,应用测井和三维地震资料 ,通过不整合面、湖泛面等层序界面和沉积旋回的识别 ,将柳赞油田沙河街组地层划分为 4个准层序组 ,12个准层序 ,建立了高分辨率的层序地层格架 ,分析了准层序在垂向上的叠置样式 ,把准层序组归纳为进积式和退积式两种类型 ,确定了优质储层在准层序和准层序组中出现的位置及分布规律。在分析沙河街组沉积时期古地形、古气候与古生态特征的基础上 ,应用砂岩厚度等值线图 ,恢复了柳赞油田古近系沙河街组岩相古地理面貌。工区内发育扇三角洲前缘亚相 ,分支水道是主要的砂体微相 ,砂体沿北东—南西向延伸 ,与古物源方向基本一致。
The Liuzan Oilfield at boundary between the Luannan County and Tanghai County of Hebei Province is located at the frontal zone of the Yanshan fold belt and eastern Nanpu Sag of Bohaiwan Basin,and is one of the most important oil fields of Jidong Oilfield.The stratigraphy of Member 3 of Shahejie Formation of Paleogene influenced by the Baigezhuang Fault and inclined palaeotopography shows the characteristics of low sorting, low maturity and complicated lithofacies,and belongs to fan delta deposition.With method of sequence stratigraphy, sequence boundaries(unconformity surface and lake flooding surface) and sedimentary cycle of Member 3 of Shahejie Formation in Liuzan Oilfield are recognized with seismic and logging data, and high resolution sequence frame is established, i.e., 4 parasequence sets and 12 parasequences. The paper analyzes parasequences' superposition style, divides parasequence sets into progradational sequence and retrograding sequence and determines the location of high-guality reservoirs in parasequences and parasequence sets. Based on the analyses of palaeotopography, palaeoclimate, palaeoecology and sedimentary facies analysis, lithofacies palaeogeography of Member 3 of Shahejie Formation in Liuzan Oilfield is reconstructed with thickness isoline map of sandstone. For Member 3 of Shahejie Formation in Liuzan Oilfield, the depositional environment is fan delta front and the distributary channel is the main sandstone microfacies. Sandstone is distributed along NE-SW direction,which is identical with that of palaeoprovenance.
The Liuzan Oilfield at boundary between the Luannan County and Tanghai County of Hebei Province is located at the frontal zone of the Yanshan fold belt and eastern Nanpu Sag of Bohaiwan Basin,and is one of the most important oil fields of Jidong Oilfield.The stratigraphy of Member 3 of Shahejie Formation of Paleogene influenced by the Baigezhuang Fault and inclined palaeotopography shows the characteristics of low sorting, low maturity and complicated lithofacies,and belongs to fan delta deposition.With method of sequence stratigraphy, sequence boundaries(unconformity surface and lake flooding surface) and sedimentary cycle of Member 3 of Shahejie Formation in Liuzan Oilfield are recognized with seismic and logging data, and high resolution sequence frame is established, i.e., 4 parasequence sets and 12 parasequences. The paper analyzes parasequences' superposition style, divides parasequence sets into progradational sequence and retrograding sequence and determines the location of high-guality reservoirs in parasequences and parasequence sets. Based on the analyses of palaeotopography, palaeoclimate, palaeoecology and sedimentary facies analysis, lithofacies palaeogeography of Member 3 of Shahejie Formation in Liuzan Oilfield is reconstructed with thickness isoline map of sandstone. For Member 3 of Shahejie Formation in Liuzan Oilfield, the depositional environment is fan delta front and the distributary channel is the main sandstone microfacies. Sandstone is distributed along NE-SW direction,which is identical with that of palaeoprovenance.
引文
操应长,姜在兴,李春华,全升吉2002山东惠民凹陷中央隆起带古近系沙三段层序地层及沉积演化古地理学报,4(3):19～25
冯增昭,王英华,刘焕杰等1994中国沉积学北京:石油工业出版社,419～421
冯增昭1992单因素分析综合作图法———岩相古地理学方法论沉积学报,10(3):70～77
冯增昭1993沉积岩石学北京:石油工业出版社,234～260
胡受权,郭文平2001试论控制断陷湖盆陆相地层层序发育的影响因素沉积学报,19(2):256～262
刘立,付荣2001辽河盆地东部凹陷北段复式断陷层序地层与油气古地理学报,3(1):71～77
张俊明,孙晓文,李国祥,袁文伟,张允白,周传明2000湘鄂地区晚寒武世末至早奥陶世特马道克期层序地层与岩相古地理古地理学报,2(3):15～26
朱筱敏2000层序地层学东营:石油大学出版社,11～13,29～39
威尔格斯CK等编,徐怀大等译1993层序地层学原理北京:石油工业出版社,47～55
CaoYingchang,JiangZaixing,LiChunhuaandQuanChengji.2002.SequencestratigraphyanddepositionalevolutionoftheMember3ofShahejieFormationinthewesternHuiminDepressionofShandongProvince.JournalofPalaeogeography,4(3):19～25(inChinesewithEnglishabstract)
VailCK ,translatedbyXuHuaida.1993.Sea levelChanges:anIntegratedApproach.Beijing:PetroleumIndustryPress,47～55(inChinese)
FengZengzhao,WangYinghuaandLiuHuanjieetal.1994.SedimentologyofChina.Beijing:PetroleumIndustryPress,419～421(inChinese)
FengZengzhao.1992.Singlefactoranalysisandcomprehensivemappingmethod—methodologyoflithofaciespalaeogeography.ActaSedimentologicaSinica,10(3):70～77(inChinesewithEnglishabstract)
FengZengzhao.1993.SedimentaryPetrology.Beijing:PetroleumIndustryPress,234～260(inChinese)
HuShouquanandGuoWenping.2001.Studyoninfluentialfactorsofterrigenoussequenceformationanddevelopmentinfault depressedlacustrinebasin.ActaSedimentologicaSinica,19(2):256～262(inChinesewithEnglishabstract)
LiuLiandFuRong.2001.SequencestratigraphyandoilandgasinthecomplexfaultdepressionofthenorthernsectionofEastDepressionintheLiaoheBasin.JournalofPalaeogeography,3(1):71～77(inChinesewithEnglishabstract)
McPhersonJG ,ShanmuganGandMoiolaRJ.1987.Fan deltasandbraiddeltas:Varietiesofcoarse graineddeltas.Geo.Soc.Amer.Bull.,99:331～340
PosamentierHWandVailPR .1998.EustaticControlsonClasticDepositionⅠ:SequenceandSystemTract.SEPMSpecialPublication.No.42:126～148
RobertSTye,BattacharyaJanokPandLorsongJamesA ,etal.1999.Geologyandstratigraphyoffluvio deltaticdepositsintheIvishakFormation:ApplicationfordevelopmentofPrudhoeBayField,Alaska.AAPGBull.,83(10):1588～1623
ZhangJunming,SunXiaowen,LiGuoxiang,YuanWenwei,ZhangYunbaiandZhouChuaniming.2000.SequencestratigraphyandlithofaciespalaeogeographyoftheTremadocianofthelatestCambriantoEarlyOrdovicianintheHunanandHubeire gion.JournalofPalaeogeography,2(3):15～26(inChinesewithEnglishabstract)
ZhuXiaomin.2000.SequenceStratigraphy.Dongying,Shandong:UniversityofPetroleumPress,11～13,29～39(inChinese)
冯增昭,王英华,刘焕杰等1994中国沉积学北京:石油工业出版社,419～421
冯增昭1992单因素分析综合作图法———岩相古地理学方法论沉积学报,10(3):70～77
冯增昭1993沉积岩石学北京:石油工业出版社,234～260
胡受权,郭文平2001试论控制断陷湖盆陆相地层层序发育的影响因素沉积学报,19(2):256～262
刘立,付荣2001辽河盆地东部凹陷北段复式断陷层序地层与油气古地理学报,3(1):71～77
张俊明,孙晓文,李国祥,袁文伟,张允白,周传明2000湘鄂地区晚寒武世末至早奥陶世特马道克期层序地层与岩相古地理古地理学报,2(3):15～26
朱筱敏2000层序地层学东营:石油大学出版社,11～13,29～39
威尔格斯CK等编,徐怀大等译1993层序地层学原理北京:石油工业出版社,47～55
CaoYingchang,JiangZaixing,LiChunhuaandQuanChengji.2002.SequencestratigraphyanddepositionalevolutionoftheMember3ofShahejieFormationinthewesternHuiminDepressionofShandongProvince.JournalofPalaeogeography,4(3):19～25(inChinesewithEnglishabstract)
VailCK ,translatedbyXuHuaida.1993.Sea levelChanges:anIntegratedApproach.Beijing:PetroleumIndustryPress,47～55(inChinese)
FengZengzhao,WangYinghuaandLiuHuanjieetal.1994.SedimentologyofChina.Beijing:PetroleumIndustryPress,419～421(inChinese)
FengZengzhao.1992.Singlefactoranalysisandcomprehensivemappingmethod—methodologyoflithofaciespalaeogeography.ActaSedimentologicaSinica,10(3):70～77(inChinesewithEnglishabstract)
FengZengzhao.1993.SedimentaryPetrology.Beijing:PetroleumIndustryPress,234～260(inChinese)
HuShouquanandGuoWenping.2001.Studyoninfluentialfactorsofterrigenoussequenceformationanddevelopmentinfault depressedlacustrinebasin.ActaSedimentologicaSinica,19(2):256～262(inChinesewithEnglishabstract)
LiuLiandFuRong.2001.SequencestratigraphyandoilandgasinthecomplexfaultdepressionofthenorthernsectionofEastDepressionintheLiaoheBasin.JournalofPalaeogeography,3(1):71～77(inChinesewithEnglishabstract)
McPhersonJG ,ShanmuganGandMoiolaRJ.1987.Fan deltasandbraiddeltas:Varietiesofcoarse graineddeltas.Geo.Soc.Amer.Bull.,99:331～340
PosamentierHWandVailPR .1998.EustaticControlsonClasticDepositionⅠ:SequenceandSystemTract.SEPMSpecialPublication.No.42:126～148
RobertSTye,BattacharyaJanokPandLorsongJamesA ,etal.1999.Geologyandstratigraphyoffluvio deltaticdepositsintheIvishakFormation:ApplicationfordevelopmentofPrudhoeBayField,Alaska.AAPGBull.,83(10):1588～1623
ZhangJunming,SunXiaowen,LiGuoxiang,YuanWenwei,ZhangYunbaiandZhouChuaniming.2000.SequencestratigraphyandlithofaciespalaeogeographyoftheTremadocianofthelatestCambriantoEarlyOrdovicianintheHunanandHubeire gion.JournalofPalaeogeography,2(3):15～26(inChinesewithEnglishabstract)
ZhuXiaomin.2000.SequenceStratigraphy.Dongying,Shandong:UniversityofPetroleumPress,11～13,29～39(inChinese)
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