| 川东北元坝地区长兴组台缘礁滩体系内幕构成及时空配置 |
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| 引用本文： | 王国茹,郭彤楼,付孝悦.川东北元坝地区长兴组台缘礁滩体系内幕构成及时空配置[J].油气地质与采收率,2011,18(4). |
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| 作者姓名： | 王国茹 郭彤楼 付孝悦 |
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| 作者单位： | 1. 成都理工大学沉积地质研究院,四川成都,610041
2. 中国石化股份勘探南方分公司,四川成都,610041 |
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| 摘 要： | 借助层序地层学技术、地震特征识别方法以及地震反演手段,对川东北元坝地区上二叠统长兴组台缘生物礁滩体系的发育特征进行了详细研究,发现长兴组可分为2个三级层序,其中下部为成滩层序,上部为成礁层序.生物礁主要发育于上部层序的高位体系域内.在地震剖面和反演剖面上揭示出5个成礁旋回,其中前2期生物礁为退积式生长,后3期生物礁为进积式生长.波阻抗反演平面图也显示了生物礁的礁前滩和礁后滩的相带分类,表明台地内的台内生屑滩主要发育于台地的南部.
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| 关 键 词： | 礁滩体系 台地边缘 体系域 长兴组 元坝地区 |
Characteristics and spatial-temporal configuration of platform margin reefbank system,Changxing formation in Yuanba area,northeastern Sichuan Basin |
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| Wang Guoru.Characteristics and spatial-temporal configuration of platform margin reefbank system,Changxing formation in Yuanba area,northeastern Sichuan Basin[J].Petroleum Geology and Recovery Efficiency,2011,18(4). |
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| Authors: | Wang Guoru |
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| Affiliation: | Wang Guoru,Institute of Sedimentary Geology,Chengdu University of Technology,Chengdu City,Sichuan Province,610041,China Guo Tonglou,Fu Xiaoyue. |
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| Abstract: | Based on sequence stratigraphy,seismic section and wave impedance inversion,the characteristics of platform margin reef-bank system of Changxing formation are studied in Yuanba area in detail.It's found that the Changxing formation is consisted of two third order sequences,and the bioclastic banks are formed in the lower sequence while the reef mainly is formed in the upper sequence.Five reef formation cycles are identified by the seismic section and wave impedance profile,of which the first two reefs are r... |
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| Keywords: | reef-bank system platform margin system domain Changxing formation Yuanba area |
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