| 胜利油田渤南洼陷古近系沙河街组沉积相 |
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| 引用本文： | 李维锋,高振中,彭德堂,罗顺社,何幼斌.胜利油田渤南洼陷古近系沙河街组沉积相[J].沉积与特提斯地质,2002,22(2):24-30. |
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| 作者姓名： | 李维锋 高振中 彭德堂 罗顺社 何幼斌 |
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| 作者单位： | 江汉石油学院,地球科学系,湖北,荆州,434023 |
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| 摘 要： | 渤南洼陷古近系沙河街组为一套冲积－湖泊沉积，由曲流河三角洲相、辫状河三角洲相、扇三角洲相、水下扇相和湖泊相组成，可分出14个亚相，35个微相，其中辫状河三角洲最发育，其特征显著，明显有别于其它四种类型的三角洲。研究区辫状河三角洲由辫状河三角洲前缘及前三角洲构成，辫状河三角洲前缘的主体是由含砂岩及中粗粒砂岩组成的水下分流河道砂坝，三角洲中交错层理发育，其中尤以水道砂坝侧向迁移加积而形成的侧积交错层异常发育为标志。
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| 关 键 词： | 古近系 沉积相 辫状河三角洲 沙河街组 渤南洼陷 胜利油田 |
| 文章编号： | 1009-3850(2002)02-0024-07 |
| 收稿时间： | 2002/5/23 0:00:00 |
| 修稿时间： | 2002年5月23日 |
Sedimentary facies of the Paleogene Shahejie Formation in the Bonan depression, Shengli Oil Field |
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| LI Wei-feng,GAO Zhen-zhong,PENG De-tang,LUO Shun-she,HE You-bin.Sedimentary facies of the Paleogene Shahejie Formation in the Bonan depression, Shengli Oil Field[J].Sedimentary Geology and Tethyan Geology,2002,22(2):24-30. |
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| Authors: | LI Wei-feng GAO Zhen-zhong PENG De-tang LUO Shun-she HE You-bin |
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| Institution: | Jianghan College of Petroleum, Jingzhou 434023, Hubei, China |
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| Abstract: | The alluvial lacustrine deposits from the Paleogene Shahejie Formation in the Bonan depression, Shengli Oil Field consist of the meandering delta facies, braided delta facies, fan delta facies, subaqueous fan facies and lacustrine facies, including 14 subfacies and 35 microfacies. Among them the braided delta facies is best developed and distinctive from the other types. The braided delta facies comprises the braided delta front subfacies and prodelta subfacies. The braided delta front subfacies consists chiefly of the subaqueous distributary channel bars composed of gravel bearing sandstones and medium to coarse grained sandstones. In the deltas outlined above, there occur the cross beddings, especially the horizontally aggraded cross beddings produced by the lateral migration of the channel bars. |
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| Keywords: | sedimentary facies braided delta Shahejie Formation Bonan depression Shengli Oil Field |
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