新开—董家岗沙三段层序相模式及砂体分布
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摘要
根据钻井、测井、地震、分析化验等资料综合分析,辽河盆地新开—董家岗斜坡带古近系沙河街组三段为一个完整的三级Ⅰ类层序。其低位域以发育厚层状紫红、灰白色砂砾岩夹泥岩组成的冲积扇相占优势,水进域以形成深灰色、褐灰色泥岩夹砂质泥岩组成的湖相沉积为典型特征,高位域过渡为浅色砂岩、砂砾岩及暗色泥岩不等厚互层组成的扇三角洲相。对应的层序沉积相演化表现为低位冲积扇→水进湖泊→高位靠扇型扇三角洲,建立了相应的层序沉积相演化模式。指出有利于储层发育的砂体主要为低位域冲积扇相和高位域扇三角洲相,而水进湖泊相则是有利烃源岩相带。
According to the synthetical analysis of drilling,well logging,seismic and test data,it is recognized the third Member of Shahejie Formation is a Ⅰ-type sequence of the third order in the slope zone from Xinkai to Dongjiagang in the Liaohe Basin.LST is dominated by alluvial fan facies which are composed of mauve and hoar heavy bedded conglomerate mingling mudstone.TST is typically characterized by lake facies which are composed of deep-grey and brown-grey mudstones interlayering sandy mudstones,to HST the facies are switched to fan-delta ones which are composed of interbedded light-colored sandstone,conglomerate and dark-colored mudstone.The evolution of sequence depositional facies corresponded above is LST alluvial fan→TST lake→HST fan-delta adjacent to alluvial fan.It is pointed out that LST alluvial fan and HST fan-delta facies are favorable for the formation of reservoir sandbodies,and TST lake facies are favorable for development of source rock.
According to the synthetical analysis of drilling,well logging,seismic and test data,it is recognized the third Member of Shahejie Formation is a Ⅰ-type sequence of the third order in the slope zone from Xinkai to Dongjiagang in the Liaohe Basin.LST is dominated by alluvial fan facies which are composed of mauve and hoar heavy bedded conglomerate mingling mudstone.TST is typically characterized by lake facies which are composed of deep-grey and brown-grey mudstones interlayering sandy mudstones,to HST the facies are switched to fan-delta ones which are composed of interbedded light-colored sandstone,conglomerate and dark-colored mudstone.The evolution of sequence depositional facies corresponded above is LST alluvial fan→TST lake→HST fan-delta adjacent to alluvial fan.It is pointed out that LST alluvial fan and HST fan-delta facies are favorable for the formation of reservoir sandbodies,and TST lake facies are favorable for development of source rock.
引文
[1]回雪峰,管守锐,张凤莲,等.辽河盆地东部凹陷中段深层沙河街组沉积相[J].古地理学报,2003,5(3):291.
[2]李虹,王立军,王凯.辽河坳陷下第三系沙三段深断槽发育特点及其油气勘探意义[J].地球学报,2001,22(5):437-440.
[3]李潍莲,孙红军,唐文连.辽河盆地东部凹陷北段古近系层序地层特征及油气藏分布[J].石油大学学报,2004,28(5):1-12.
[4]郝琦,查明,刘震,等.辽河东部凹陷潜山油气藏特征及油气分布规律[J].成都理工大学学报,2006,33(3):246-251.
[5]胡宗全,孙立春,刘志飞,等.断陷湖盆的沉积层序特征———以辽河盆地东部凹陷为例[J].矿物岩石,1998,(S1):142-145.
[6]张金亮,杨子成,司学强.辽河油田西部凹陷沙三段沉积相及演化[J].西北地质,2004,37(4):7-14.
[7]赖生华,麻建明.辽河盆地冷家油田沙河街组三段储层岩相古地理[J].沉积与特提斯地质,2005,25(3):46.
[8]彭苏萍,肖乾华,李宏伟,等.辽河盆地东部凹陷中段沙河街组砂岩储集体预测[J].地球学报,2003,24(5):435-438.
[9]鞠俊成,张凤莲,喻国凡,等.辽河盆地西部凹陷南部沙三段储层沉积特征及含油气性分析[J].古地理学报,2001,3(1):63-70.
[10]于兴河,张道建,雷明,等.辽河油田东、西部凹陷深层沙河街组沉积相模式[J].古地理学报,1999,1(3):40-48
[2]李虹,王立军,王凯.辽河坳陷下第三系沙三段深断槽发育特点及其油气勘探意义[J].地球学报,2001,22(5):437-440.
[3]李潍莲,孙红军,唐文连.辽河盆地东部凹陷北段古近系层序地层特征及油气藏分布[J].石油大学学报,2004,28(5):1-12.
[4]郝琦,查明,刘震,等.辽河东部凹陷潜山油气藏特征及油气分布规律[J].成都理工大学学报,2006,33(3):246-251.
[5]胡宗全,孙立春,刘志飞,等.断陷湖盆的沉积层序特征———以辽河盆地东部凹陷为例[J].矿物岩石,1998,(S1):142-145.
[6]张金亮,杨子成,司学强.辽河油田西部凹陷沙三段沉积相及演化[J].西北地质,2004,37(4):7-14.
[7]赖生华,麻建明.辽河盆地冷家油田沙河街组三段储层岩相古地理[J].沉积与特提斯地质,2005,25(3):46.
[8]彭苏萍,肖乾华,李宏伟,等.辽河盆地东部凹陷中段沙河街组砂岩储集体预测[J].地球学报,2003,24(5):435-438.
[9]鞠俊成,张凤莲,喻国凡,等.辽河盆地西部凹陷南部沙三段储层沉积特征及含油气性分析[J].古地理学报,2001,3(1):63-70.
[10]于兴河,张道建,雷明,等.辽河油田东、西部凹陷深层沙河街组沉积相模式[J].古地理学报,1999,1(3):40-48
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