三级基准面旋回内三角洲砂体骨架模型的建立&mdash;&mdash;以陕北安塞三角洲露头为例

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三级基准面旋回内三角洲砂体骨架模型的建立——以陕北安塞三角洲露头为例

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中图分类号: P539.2

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Establishment of the Delta Sandbody Framework Model in a 3^rdOrder Baselevel Cycle: taking Shanbei Ansai delta outcrop as example

摘要

摘要: 角洲砂体是中国陆相盆地最重要的油气储集层之一,建立层序地层格架内三角洲砂体骨架露头地质模型,对于三角洲砂体分布预测有重要意义。对鄂尔多斯盆地东缘多个延长组曲流河三角洲露头剖面开展了深入的高分辨率层序地层学研究,正确识别出以长61下部下切河谷底面以及对应整合面为界面的三级基准面旋回,构建了三级基准面旋回格架内三角洲砂体骨架原型模型,建立了三级基准面旋回内三角洲平原分流河道(河流)样式响应模式图。该项研究表明,三级基准面旋回过程中,不同基准面升降速率下分流河道发生规律性的下切、充填、迁移、漫溢及河型改变,控制了层序地层格架内三角洲砂体的类型、形态、规模和连通性。这对于认识三角洲砂体的分布规律,分析三角洲砂体形成岩性地层圈闭的条件有重要帮助。深入开展多种地质背景下层序格架内三角洲砂体分布规律研究,有助于实现三角洲砂体分布“成因上可解释、时空上可预测”的层序地层学研究目标。
- 层序地层格架 /
- 基准面旋回 /
- 曲流河三角洲 /
- 鄂尔多斯盆地 /
- 砂体骨架模型
Abstract: Delta sandbody is one of the most important continental-basin hydrocarbon reservoir in China. The establishment of delta sandbody framework model in sequence stratigraphic framework is very important to the prediction of delta sandbody. Detailed high-resolution sequence stratigraphy study has been carried out on the Upper Triassic fluvial delta outcrops along the eastern margin of Ordos Basin. The basal surface of incised fluvial valley has been recognized as the boundary of a 3^rdorder base level cycle. Furthermore, delta sandbody framework prototype model and the evolutionary model of deltaplain distributary channel style in a 3^rdorder base level cycle have been established. This study demonstrate that the incision, aggradation, migration, overflow and style change of delta plain distributary channel or fluvial channel should be happen regularly in response to different base-level rise and fall rate in a 3^rdorder base level cycle, which make difference to the type, shape, scale and connectivity of delta sandbody in sequence stratigrphic framework. The discovery of this rule is important to the prediction of delta sandbody and the stratigraphic-trap forming condition analysis. Furthermore study of sandbody distribution in sequence stratigrphic framework under different geological conditions is helpful to the realization of the study object of sequence stratigrphy-“interpretable in genesis and predictable in space-time”.
- sequence stratigraphic framework /
- baselevel cycle /
- river delta /
- Ordos Basin /
- sandbody framework model

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[1]	曹江骏, 杨友运, 陈朝兵, 卜广平, 王茜, 杨一茗. 致密砂岩储层骨架砂体构型特征——以鄂尔多斯盆地合水地区延长组长6段砂体为例 . 沉积学报, 2019, 37(6): 1105-1116. doi: 10.14027/j.issn.1000-0550.2019.051
[2]	赵晨帆, 于兴河, 付超, 韩小琴, 杜永慧. 曲流河三角洲—辫状河三角洲控制因素及演化过程探讨 . 沉积学报, 2019, 37(4): 768-784. doi: 10.14027/j.issn.1000-0550.2018.154
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[4]	李亚龙, 于兴河, 周进松, 单新, 韩小琴, 史新, 胡鹏. 鄂尔多斯盆地东南部山2段物源与曲流河三角洲沉积体系 . 沉积学报, 2017, 35(3): 540-551. doi: 10.14027/j.cnki.cjxb.2017.03.012
[5]	钟原, 刘宏, 谭秀成, 连承波, 廖纪佳, 刘明洁, 胡广, 曹剑. 富砂地层格架高分辨率层序地层学研究及储层甜点预测——以四川盆地合川地区须家河组为例 . 沉积学报, 2016, 34(4): 758-774. doi: 10.14027/j.cnki.cjxb.2016.04.016
[6]	刘畅, 张琴, 谢寅符, 乔李井宇, 孙杰夫, 梅啸寒. 厄瓜多尔Oriente盆地东北部区块白垩系层序地层格架及发育模式 . 沉积学报, 2014, 32(6): 1123-1131.
[7]	. 利用数字露头模型技术对曲流河三角洲沉积储层特征的研究 . 沉积学报, 2013, 31(05): 867-877.
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文章访问数: 804
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三级基准面旋回内三角洲砂体骨架模型的建立——以陕北安塞三角洲露头为例

收稿日期: 2005-09-20

修回日期: 2005-12-15

刊出日期: 2006-08-10

中图分类号: P539.2

关键词:

摘要: 角洲砂体是中国陆相盆地最重要的油气储集层之一,建立层序地层格架内三角洲砂体骨架露头地质模型,对于三角洲砂体分布预测有重要意义。对鄂尔多斯盆地东缘多个延长组曲流河三角洲露头剖面开展了深入的高分辨率层序地层学研究,正确识别出以长61下部下切河谷底面以及对应整合面为界面的三级基准面旋回,构建了三级基准面旋回格架内三角洲砂体骨架原型模型,建立了三级基准面旋回内三角洲平原分流河道(河流)样式响应模式图。该项研究表明,三级基准面旋回过程中,不同基准面升降速率下分流河道发生规律性的下切、充填、迁移、漫溢及河型改变,控制了层序地层格架内三角洲砂体的类型、形态、规模和连通性。这对于认识三角洲砂体的分布规律,分析三角洲砂体形成岩性地层圈闭的条件有重要帮助。深入开展多种地质背景下层序格架内三角洲砂体分布规律研究,有助于实现三角洲砂体分布“成因上可解释、时空上可预测”的层序地层学研究目标。

Establishment of the Delta Sandbody Framework Model in a 3^rdOrder Baselevel Cycle: taking Shanbei Ansai delta outcrop as example

Received Date: 2005-09-20

Rev Recd Date: 2005-12-15

Publish Date: 2006-08-10

Keywords:

Abstract: Delta sandbody is one of the most important continental-basin hydrocarbon reservoir in China. The establishment of delta sandbody framework model in sequence stratigraphic framework is very important to the prediction of delta sandbody. Detailed high-resolution sequence stratigraphy study has been carried out on the Upper Triassic fluvial delta outcrops along the eastern margin of Ordos Basin. The basal surface of incised fluvial valley has been recognized as the boundary of a 3^rdorder base level cycle. Furthermore, delta sandbody framework prototype model and the evolutionary model of deltaplain distributary channel style in a 3^rdorder base level cycle have been established. This study demonstrate that the incision, aggradation, migration, overflow and style change of delta plain distributary channel or fluvial channel should be happen regularly in response to different base-level rise and fall rate in a 3^rdorder base level cycle, which make difference to the type, shape, scale and connectivity of delta sandbody in sequence stratigrphic framework. The discovery of this rule is important to the prediction of delta sandbody and the stratigraphic-trap forming condition analysis. Furthermore study of sandbody distribution in sequence stratigrphic framework under different geological conditions is helpful to the realization of the study object of sequence stratigrphy-“interpretable in genesis and predictable in space-time”.

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三级基准面旋回内三角洲砂体骨架模型的建立——以陕北安塞三角洲露头为例

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Establishment of the Delta Sandbody Framework Model in a 3^rdOrder Baselevel Cycle: taking Shanbei Ansai delta outcrop as example

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三级基准面旋回内三角洲砂体骨架模型的建立——以陕北安塞三角洲露头为例

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Establishment of the Delta Sandbody Framework Model in a 3^rdOrder Baselevel Cycle: taking Shanbei Ansai delta outcrop as example

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三级基准面旋回内三角洲砂体骨架模型的建立——以陕北安塞三角洲露头为例

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Establishment of the Delta Sandbody Framework Model in a 3rd Order Baselevel Cycle: taking Shanbei Ansai delta outcrop as example

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出版历程

目录

三级基准面旋回内三角洲砂体骨架模型的建立——以陕北安塞三角洲露头为例

English Abstract

Establishment of the Delta Sandbody Framework Model in a 3rd Order Baselevel Cycle: taking Shanbei Ansai delta outcrop as example

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期刊在线

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Establishment of the Delta Sandbody Framework Model in a 3^rdOrder Baselevel Cycle: taking Shanbei Ansai delta outcrop as example

Establishment of the Delta Sandbody Framework Model in a 3^rdOrder Baselevel Cycle: taking Shanbei Ansai delta outcrop as example