山东潍北凹陷古近系孔店组一段特征及沉积演化
|
摘要
综合运用岩心、钻井、测井及地震资料,对潍北凹陷古近系孔一段的地层特征及沉积演化进行研究。结果表明:潍北凹陷孔店组一段可以划分为3个亚段、11个砂层组。在西部鄌郚—葛沟断裂和东部昌邑—大店断裂控制下,地层东西向发育稳定,仅在北部洼陷带地层显著加厚;在北部古城—潍河口断层控制下,地层向南部超覆,地层由北向南变薄。潍北凹陷孔店组一段主要发育扇三角洲相和湖泊相,南部斜坡带发育小范围三角洲相。孔一下亚段,物源供给充足,北部洼陷带、瓦城断阶带和灶户断鼻带发育大规模的扇三角洲相;孔一中亚段,湖盆水体变浅,物源供给减少,北部洼陷带、瓦城断阶带和灶户断鼻带继承性发育扇三角洲相,但分布范围变小;孔一上亚段,湖盆水体最浅,物源供给少,全区发育滨浅湖亚相,仅在央斜4井区和昌11井区发育小范围的扇三角洲相沉积。
Based on the comprehensive analysis of cores, drilling well,logging and seismic data,the stratigraphic characteristics and sedimentary evolution in the Member 1 of Paleogene Kongdian Formation in Weibei Sag was analyzed.This study suggests that the Member 1 of Kongdian Formation was divided into 3 sub-members,containing 11 sand sets.Controlled by Tangwu-Gegou fault in the west and Changyi-Dadian fault in the east,the strata developed stably in the east and west,only in the northern sub-sag belt strata became thicker.Controlled by Gucheng-Weihekou fault in the northern Weibei Sag,the strata overlapped towards the south and thinned generally from north to south.Fan delta facies and lacustrine facies mainly developed in Member 1 of Kongdian Formation in Weibei Sag,and delta developed in small scale in the southern slope belt.During the development of the lower submember of Member 1 of Kongdian Formation,sediment supply was abundant,which formed the large-scale fan-deltas in northern sub-sag belt,Wacheng fault-step belt and Zaohu fault-nose belt.During the development of the middle submember of Member 1 of Kongdian Formation,the depth of water became shallower and sediment supply decreased,fan-deltas inherited the development in northern sub-sag belt,Wacheng fault-step belt and Zaohu fault-nose belt,which distributed in small scale.During the development of the upper submember of Member 1 of Kongdian Formation,the depth of water became the shallowest,the whole area developed shore-shallow lacustrine facies,and only small-scale fan-deltas developed in Wells Yangxie 4 and Chang 11.
Based on the comprehensive analysis of cores, drilling well,logging and seismic data,the stratigraphic characteristics and sedimentary evolution in the Member 1 of Paleogene Kongdian Formation in Weibei Sag was analyzed.This study suggests that the Member 1 of Kongdian Formation was divided into 3 sub-members,containing 11 sand sets.Controlled by Tangwu-Gegou fault in the west and Changyi-Dadian fault in the east,the strata developed stably in the east and west,only in the northern sub-sag belt strata became thicker.Controlled by Gucheng-Weihekou fault in the northern Weibei Sag,the strata overlapped towards the south and thinned generally from north to south.Fan delta facies and lacustrine facies mainly developed in Member 1 of Kongdian Formation in Weibei Sag,and delta developed in small scale in the southern slope belt.During the development of the lower submember of Member 1 of Kongdian Formation,sediment supply was abundant,which formed the large-scale fan-deltas in northern sub-sag belt,Wacheng fault-step belt and Zaohu fault-nose belt.During the development of the middle submember of Member 1 of Kongdian Formation,the depth of water became shallower and sediment supply decreased,fan-deltas inherited the development in northern sub-sag belt,Wacheng fault-step belt and Zaohu fault-nose belt,which distributed in small scale.During the development of the upper submember of Member 1 of Kongdian Formation,the depth of water became the shallowest,the whole area developed shore-shallow lacustrine facies,and only small-scale fan-deltas developed in Wells Yangxie 4 and Chang 11.
引文
程有义,李晓清,汪泽成,等.2004.潍北拉分盆地形成演化及其对成油气条件的控制[J].石油勘探与开发,31(6):32-35.
程有义,梁书义,丘东洲.2001.潍北凹陷中新生代层序地层的沉积模式[J].沉积与特提斯地质,21(4):21-27.
纪友亮,蒙启安,曹瑞成,等.2010.蒙古国东部塔木察格盆地南部白垩系地层结构及沉积充填特征[J].古地理学报,12(6):729-736.
鞠俊成,刘宝.2008.大民屯凹陷古近系层序地层格架与层序成因分析[J].天然气地球科学,19(4):462-467.
谭俊敏,杨国权,王永刚,等.2004.潍北凹陷砂砾岩体的地球物理特征研究[J].石油物探,43(4):341-344.
王文林,杨永红.2003.潍北凹陷孔店组沉积相特征研究[J].特种油气藏,10(2):23-26.
鲜本忠,王永诗.2008.基于小波变换基准面恢复的砂砾岩期次划分与对比[J].中国石油大学学报(自然科学版),32(6):1-5.
谢春安,胡明毅,贾秀容,等.2011.江汉盆地马王庙地区古近系新沟嘴组下段沉积相及其演化[J].古地理学报,13(2):209-220.
杨桥,漆家福,常德双,等.2009.渤海湾盆地黄骅坳陷南部古近系孔店组沉积时期构造古地理演化[J].古地理学报,11(3):306-313.
杨永红,常国贞,边雪梅,等.2005.山东昌潍坳陷古近系孔店组划分与分布[J].地层学杂志,29(1):78-83.
尹兵祥,王尚旭,杨国权,等.2004.渤海湾盆地东营—惠民凹陷古近系孔店组孔二段地震相与沉积相[J].古地理学报,6(1):49-56.
程有义,梁书义,丘东洲.2001.潍北凹陷中新生代层序地层的沉积模式[J].沉积与特提斯地质,21(4):21-27.
纪友亮,蒙启安,曹瑞成,等.2010.蒙古国东部塔木察格盆地南部白垩系地层结构及沉积充填特征[J].古地理学报,12(6):729-736.
鞠俊成,刘宝.2008.大民屯凹陷古近系层序地层格架与层序成因分析[J].天然气地球科学,19(4):462-467.
谭俊敏,杨国权,王永刚,等.2004.潍北凹陷砂砾岩体的地球物理特征研究[J].石油物探,43(4):341-344.
王文林,杨永红.2003.潍北凹陷孔店组沉积相特征研究[J].特种油气藏,10(2):23-26.
鲜本忠,王永诗.2008.基于小波变换基准面恢复的砂砾岩期次划分与对比[J].中国石油大学学报(自然科学版),32(6):1-5.
谢春安,胡明毅,贾秀容,等.2011.江汉盆地马王庙地区古近系新沟嘴组下段沉积相及其演化[J].古地理学报,13(2):209-220.
杨桥,漆家福,常德双,等.2009.渤海湾盆地黄骅坳陷南部古近系孔店组沉积时期构造古地理演化[J].古地理学报,11(3):306-313.
杨永红,常国贞,边雪梅,等.2005.山东昌潍坳陷古近系孔店组划分与分布[J].地层学杂志,29(1):78-83.
尹兵祥,王尚旭,杨国权,等.2004.渤海湾盆地东营—惠民凹陷古近系孔店组孔二段地震相与沉积相[J].古地理学报,6(1):49-56.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心