渤海海域黄河口凹陷油气成藏条件及其分布特征
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摘要
利用最新高分辨率三维地震资料、测井录井等资料,结合岩心观察信息,从烃源岩、储集层、生储盖组合、圈闭类型和输导体系5个方面对黄河口凹陷油气成藏条件进行了系统分析。研究表明,黄河口凹陷烃源岩在整个凹陷普遍发育,共有3套烃源岩,其中沙河街组三段和东营组三段是主力烃源岩;主要的储集层是新生界碎屑岩储层和基岩储层;生储盖层组合模式有下生中储上盖式、上生下储上盖式和自生自储式;圈闭类型以断块圈闭为主;输导系统以断裂的垂向疏导为主;新构造运动对黄河口凹陷的影响是新近系油气聚集的优越条件,晚期断裂活动对已形成油气藏起到保存和二次分配的作用。油气藏分布在平面上主要环绕生油洼陷呈环带状分布于洼陷周边的构造带中,古近系油气主要围绕东部次洼呈环带状分布,新近系主要呈"T"字形分布,从古近系到新近系油气有由周边向中间、由南向北聚集的特征。
The hydrocarbon accumulation conditions in the Huanghekou depression are analyzed in this paper,using the latest high-resolution 3D seismic and well logging,combined with the core observation information,from the source rock,reservoirs,reservoir-seal assemblage,traps type and carrier systems.The results show that source rocks are general in the Huanghekou depression,and there develop three sets of hydrocarbon source rocks,and the 3rd Member of the Shahejie Formation and the 3rd Member of the Dongying Formation are the major source rocks.The main reservoir includes Cenozoic clastic reservoir and bedrock reservoir.The main types of source-reservoir-cap rock assemblages include lower-generation middle-accumulation and upper-cap rock,upper-generation lower-accumulation and upper-cap rock,indigenous generation and accumulation.The trap types are mainly fault block traps,and faults dominate the carrier system in the vertical direction.The influence of Neotectonic Movement on the Huanghekou depression brings favorable conditions for the Neogene hydrocarbon accumulation,and the late fault activity plays roles of preservation and secondary distribution of the formed reservoirs.Major reservoirs in the plane are around oil-generating depressions with a zonal distribution in the structural belt.Paleogene reservoirs are in zonated distribution around the eastern sag.The Neogene majorly is in "T"-shaped distribution.Hydrocarbon accumulates from the periphery to the center,from south to north,from the Paleogene to the Neogene in the Huanghekou depression.
The hydrocarbon accumulation conditions in the Huanghekou depression are analyzed in this paper,using the latest high-resolution 3D seismic and well logging,combined with the core observation information,from the source rock,reservoirs,reservoir-seal assemblage,traps type and carrier systems.The results show that source rocks are general in the Huanghekou depression,and there develop three sets of hydrocarbon source rocks,and the 3rd Member of the Shahejie Formation and the 3rd Member of the Dongying Formation are the major source rocks.The main reservoir includes Cenozoic clastic reservoir and bedrock reservoir.The main types of source-reservoir-cap rock assemblages include lower-generation middle-accumulation and upper-cap rock,upper-generation lower-accumulation and upper-cap rock,indigenous generation and accumulation.The trap types are mainly fault block traps,and faults dominate the carrier system in the vertical direction.The influence of Neotectonic Movement on the Huanghekou depression brings favorable conditions for the Neogene hydrocarbon accumulation,and the late fault activity plays roles of preservation and secondary distribution of the formed reservoirs.Major reservoirs in the plane are around oil-generating depressions with a zonal distribution in the structural belt.Paleogene reservoirs are in zonated distribution around the eastern sag.The Neogene majorly is in "T"-shaped distribution.Hydrocarbon accumulates from the periphery to the center,from south to north,from the Paleogene to the Neogene in the Huanghekou depression.
引文
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[13]张国良,邓辉,李颖,等.基岩潜山是渤海天然气勘探的重要领域[J].中国海上油气,2004,16(4):222-229.
[14]郝芳,蔡东升,邹华耀,等.渤中坳陷超压-构造活动联控型流体流动与油气快速成藏[J].地球科学:中国地质大学学报,2004,29(5):518-524.
[15]李建平,辛仁臣,向淑敏,等.渤海湾盆地黄河口凹陷古近系东营组三段沉积特征[J].古地理学报,2008,10(4):363-370.
[16]李宏义,姜振学,董月霞,等.渤海湾盆地南堡凹陷断层对油气运聚的控制作用[J].现代地质,2010,24(4):755-761.
[17]姜振海,林畅松,曲爱英.辽河东部凹陷红星地区古近系构造-岩性油气藏成藏控制因素[J].现代地质,2011,25(4):635-641.
[18]付兆辉,高喜龙,陆友明,等.渤海湾盆地垦东凸起构造特征与油气聚集[J].现代地质,2008,22(4):619-627.
[2]邓荣敬,徐备,漆家福,等.营口-潍坊断裂带新生代盆地构造沉降对相邻板块运动的响应[J].北京大学学报:自然科学版,2008,44(3):439-446.
[3]李慧勇,辛仁臣,李强,等.黄河口凹陷A区古近系沙河街组三段沉积相[J].古地理学报,2007,9(1):25-32.
[4]吴小红,吕修祥,周心怀,等.黄河口凹陷浅水三角洲沉积特征及其油气勘探意义[J].石油与天然气地质,2010,31(2):165-172.
[5]孔庆莹,邹华耀,胡艳飞,等.黄河口凹陷古近系烃源岩的地球化学特征[J].西安石油大学学报:自然科学版,2009,24(2):4-8.
[6]孔庆莹,郑荣才,邹华耀.烃源岩有效性研究新方法——以黄河口凹陷HHK1井为例[J].成都理工大学学报:自然科学版,2008,35(3):248-252.
[7]庄新兵,邹华耀,姜雪,等.黄河口凹陷湖相烃源岩发育机制[J].科技导报,2010,28(22):48-54.
[8]彭文绪,孙和风,张如才,等.渤海海域黄河口凹陷近源晚期优势成藏模式[J].石油与天然气地质,2009,30(4):510-518.
[9]蔡东升,罗毓晖,武文来,等.渤海浅层构造变形特征、成因机理与渤中拗陷及其周围油气富集的关系[J].中国海上油气(地质),2001,15(1):35-43.
[10]侯贵廷,钱祥麟,宋新民.渤海湾盆地形成机制研究[J].北京大学学报:自然科学版,1998,34(4):503-509.
[11]张丽萍.黄河口凹陷古近系沙河街组三段砂岩储层特征[J].大庆石油学院学报,2007,31(4):13-18.
[12]田立新,余宏忠,周心怀,等.黄河口凹陷油气成藏的主控因素[J].新疆石油地质,2009,30(3):319-321.
[13]张国良,邓辉,李颖,等.基岩潜山是渤海天然气勘探的重要领域[J].中国海上油气,2004,16(4):222-229.
[14]郝芳,蔡东升,邹华耀,等.渤中坳陷超压-构造活动联控型流体流动与油气快速成藏[J].地球科学:中国地质大学学报,2004,29(5):518-524.
[15]李建平,辛仁臣,向淑敏,等.渤海湾盆地黄河口凹陷古近系东营组三段沉积特征[J].古地理学报,2008,10(4):363-370.
[16]李宏义,姜振学,董月霞,等.渤海湾盆地南堡凹陷断层对油气运聚的控制作用[J].现代地质,2010,24(4):755-761.
[17]姜振海,林畅松,曲爱英.辽河东部凹陷红星地区古近系构造-岩性油气藏成藏控制因素[J].现代地质,2011,25(4):635-641.
[18]付兆辉,高喜龙,陆友明,等.渤海湾盆地垦东凸起构造特征与油气聚集[J].现代地质,2008,22(4):619-627.
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