安棚深层系扇三角洲沉积微相研究
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摘要
通过大量的岩心观察和描述,结合沉积特征、测井、区域地质等基础资料,对安棚深层系沉积特征与沉积相进行了全面的分析,认为安棚深层系属近源快速堆积的扇三角洲沉积体系,共划分为9种岩相特征;在砂岩和砾岩中发育平行层理、斜层理、块状层理;主要发育水下分流河道、河口坝、席状砂等微相。明确了不同时期、不同砂体的沉积微相展布特征,同时与冲积扇沉积体系进行对比研究。在对扇三角洲的形成条件、岩性特征、沉积微相特征分析的基础上,研究了扇三角洲的识别标志,并建立了扇三角洲的沉积模式。
Through a lot of core observation and description,combining with the sedimentary characteristics,logging data and regional geological data,the comprehensive analysis of sedimentary characteristics and sedimentary facies in deep strata series of Anpeng oilfield was carried out.The results indicated the region belonged to fan delta sedimentary system and had 9 kinds of lithofacies.In sandstone and conglomerate,parallel bedding,oblique bedding and massive bedding were mainly developed.There mainly developed underwater distributary channel,mouth bar,sheet sand microfacies,etc.The sedimentary microfacies distribution characteristics of different sand bodies at different periods were made clear and compared with that of in alluvial fan sedimentary system.Based on forming conditions,lithologic features and sedimentary microfacies analysis of fan delta,the study on identification mark of the fan delta was carried out and its sedimentary model was established.
Through a lot of core observation and description,combining with the sedimentary characteristics,logging data and regional geological data,the comprehensive analysis of sedimentary characteristics and sedimentary facies in deep strata series of Anpeng oilfield was carried out.The results indicated the region belonged to fan delta sedimentary system and had 9 kinds of lithofacies.In sandstone and conglomerate,parallel bedding,oblique bedding and massive bedding were mainly developed.There mainly developed underwater distributary channel,mouth bar,sheet sand microfacies,etc.The sedimentary microfacies distribution characteristics of different sand bodies at different periods were made clear and compared with that of in alluvial fan sedimentary system.Based on forming conditions,lithologic features and sedimentary microfacies analysis of fan delta,the study on identification mark of the fan delta was carried out and its sedimentary model was established.
引文
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[2]陈春强,张亚中,吴丽艳,等.安棚油田扇三角洲沉积微相特征与油气分布[J].新疆石油地质,2005,26(5):530-532.
[3]王会芳,李世雄,雷传玲.赵凹油田安棚区中高渗油藏核三段Ⅰ油组沉积微相研究[J].重庆科技学院学报,2011,13(6):19-22.
[4]明海会,金振奎,李清作,等.泌阳凹陷安棚油田深层系沉积相及对油气分布的控制作用[J].地球科学与环境学报,2005,27(2):48-51.
[5]顾家裕.中国东部古代扇三角洲沉积[J].石油与天然气地质,1984,5(3):236-245.
[6]丁安军,张驰,赖广华,等.准噶尔盆地春光区块构造特征及沉积充填特征[J].石油地质与工程,2016,30(1):14-17.
[7]刘威,张春生,方金,等.鄂尔多斯盆地绥靖地区长7油层组沉积相特征研究[J].石油地质与工程,2016,30(1):37-40.
[8]谢俊.濮城油田沙二上1砂组末端扇沉积体系研究[J].西南石油大学学报(自然科学版),2008,30(2):58-62.
[9]侯国伟.赵凹油田安棚区核三下段的沉积模式[J].沉积与特提斯地质,2001,21(4):60-70.