珠江口盆地恩平凹陷A-1井区珠江组沉积相研究及其演化分析
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摘要
珠江口盆地恩平凹陷A-1井区珠江组三角洲沉积发育;通过对A-1井的岩心观察,结合粒度概率累积曲线和C-M图分析,在珠江组识别出11种岩石相以及2种岩石相组合;在A-1井珠江组中识别出分流河道、水下分流河道、受潮汐影响的水下分流河道、分流间湾和河口砂坝等沉积微相。通过对研究区典型沉积微相、亚相的测井响应特征和地震响应特征的分析总结,在沉积相综合研究的基础上,对珠江组的沉积演化史进行探讨,从而为后期的勘探开发提供依据。
The area of Zhujiang Formation of Wellblock A-1 in Enping Depression of the Pearl-river Mouth Basin had the characteristics of delta deposit develpment.On the basis of observation and description of cores from Wellblock A-1 and lithological analysis,the combination of 10 types of lithofacies and 2 types of lithofacies of the Zhujiang Formation was identified according to the lithological characteristics and probability cumulative curve and C-M plot.Then it could be identified as distributary channel,submarine distributary channel,tide-influenced submarine distributary channel,inter-distributary area,channel mouth bar,and so on.Through the analysis and summarization of logging and seismic response characters of microfacies and subfacies in the studied area,in combination with the comprehensive research on depositional facies,the sedimentary evolution of Zhujiang Formation is discussed.It provides some important guidances for further oil exploration and development.
The area of Zhujiang Formation of Wellblock A-1 in Enping Depression of the Pearl-river Mouth Basin had the characteristics of delta deposit develpment.On the basis of observation and description of cores from Wellblock A-1 and lithological analysis,the combination of 10 types of lithofacies and 2 types of lithofacies of the Zhujiang Formation was identified according to the lithological characteristics and probability cumulative curve and C-M plot.Then it could be identified as distributary channel,submarine distributary channel,tide-influenced submarine distributary channel,inter-distributary area,channel mouth bar,and so on.Through the analysis and summarization of logging and seismic response characters of microfacies and subfacies in the studied area,in combination with the comprehensive research on depositional facies,the sedimentary evolution of Zhujiang Formation is discussed.It provides some important guidances for further oil exploration and development.
引文
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[3]石国平.珠江口盆地下中新早期的水下潮汐三角洲[J].沉积学报,1989,7(1):135~141.
[4]张尚锋.高分辨率层序地层学理论与实践[M].北京:石油工业出版社,2007.31~40.
[5]Miall A D.Analysis Fluvial Depositional Systems[M].Tulsa:AAPG Bookstore,1982.
[6]何幼斌,王文广.沉积岩与沉积相[M].北京:石油工业出版社,2001.30~42.
[7]张昌民,徐龙.青海油砂山油田第68层分流河道砂体解剖学[J].沉积学报,1996,14(4):70~76.
[8]景山,王成善.辽西建昌盆地早白垩世义县组沉积环境分析及盆地演化初探[J].沉积学报,2009,27(4):583~590.
[9]《沉积构造与环境解释》编著组.沉积构造与环境解释[M].北京:科学出版社,1984.23~38.
[10]赵澄林,朱筱敏.沉积岩石学[M].北京:石油工业出版社,2001.72~86.
[11]林克湘,张昌民.地面-地下对比建立储层精细地质模型[M].北京:石油工业出版社,1995.33~36.
[12]夏文杰.陆缘碎屑潮汐沉积的判别标志[J].石油实验地质,1982,4(4):285~293.
[13]龙更生,杜家元.第四届全国沉积学大会论文集(下)[C].北京:科学出版社,2009.972~980.
[14]于兴河.碎屑岩系油气储层沉积学[M].北京:石油工业出版社,2008.149~162.
[15]王振奇,张尚锋,淡卫东,等.珠江口盆地珠一坳陷珠海组三角洲沉积特征[J].沉积与特提斯地质,2005,25(3):62~67.
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