地震沉积解释技术在高邮凹陷泰二段烃源岩预测中的应用
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摘要
泰州组是高邮凹陷现实的勘探接替层系和重要的资源接替领域。钻井数量少、勘探程度低、烃源岩的分布范围及油气资源潜力难以准确评价是制约其油气勘探的主要难点。以研究区内现有钻井资料及烃源岩地化分析成果为基础,充分利用地震资料横向分辨率高的优势,开展基于地层切片的地震多属性融合分析,首次将地震沉积解释技术运用到烃源岩平面发育及展布特征预测中,取得较好效果。研究表明,高邮凹陷中东部泰二段为半深湖相沉积,烃源岩有机质丰度高、热演化为低熟—成熟阶段,是高邮凹陷泰州组烃源岩有利发育区。地震沉积解释成果与区域沉积环境、烃源岩发育特征吻合较好,是井资料较少地区研究烃源岩发育、分布范围的有效技术手段。
K2t2 is the realistic potential target and important replacement area of Gaoyou Sag. Few wells,low-degree exploration,how to predict the distribution of the source rock and evaluate the resource potential exactly,these are main difficulties to restrict the oil exploration of k2t2. Based on the well data and geochemical data of the source rock and take full advantage of high horizontal resolution of seismic data,multi-attribute fusion were analyzed based on the strata slice,firstly applied the technology of seisimic sedimentology to the prediction of distribution of the source rock and obtained a striking effect. This indicated that K2t2 of middle-east of Gaoyou Sag show the sedimentary characteristic of Semi-deep lacustrine facies with high TOC,low mature-mature thermal maturity,it is favorable area of the source rock of K2t2,Gaoyou sag. The results of seisimic sedimentology agree well with the depositional environments and the source rock generation feature. It was proved to be the effectual method of researching characteristics and distribution of source rock for few-well areas.
K2t2 is the realistic potential target and important replacement area of Gaoyou Sag. Few wells,low-degree exploration,how to predict the distribution of the source rock and evaluate the resource potential exactly,these are main difficulties to restrict the oil exploration of k2t2. Based on the well data and geochemical data of the source rock and take full advantage of high horizontal resolution of seismic data,multi-attribute fusion were analyzed based on the strata slice,firstly applied the technology of seisimic sedimentology to the prediction of distribution of the source rock and obtained a striking effect. This indicated that K2t2 of middle-east of Gaoyou Sag show the sedimentary characteristic of Semi-deep lacustrine facies with high TOC,low mature-mature thermal maturity,it is favorable area of the source rock of K2t2,Gaoyou sag. The results of seisimic sedimentology agree well with the depositional environments and the source rock generation feature. It was proved to be the effectual method of researching characteristics and distribution of source rock for few-well areas.
引文
1 魏嘉,朱文斌,朱海龙,等.地震沉积学——地震解释的新思路及沉积研究的新工具.勘探地球物理进展,2008;31(2):95—101Wei Jia,Zhu Wenbin,Zhu Longhai,et al.Seismic sedimentology——new thought of seismic interpretation and new facility of depositional research.Progress in Exploration Geophysics,2008;31(2):95 —101
2 曹强,叶加仁,石万忠.地震属性在南黄海北部盆地勘探新区烃源岩厚度预测中的应用.海洋地质与第四纪地质,2008;28(5):109—114Cao Qiang,Yejiaren,Shi Wanzhong.The seismic attributes application of generating rock thickness in new prospect of north basin in south Yellow Sea.Marine Geology&Quaternary Geology,2008;28(5):109—114
3 曹强,叶加仁.南黄海北部盆地东北凹陷烃源岩的早期预测.地质科技情报,2008;27(4):75—79Cao Qiang,Ye Jiaren.Early generating rock projection in northeast sag of north basin in South Yellow Sea.Geological Science and Technology,2008;27(4):75—79
4 董春梅,张宪国,林承焰.地震沉积学的概念、方法和技术.沉积学报,2006;24(5):698—704Dong Chunmei,Zhang Xianguo,Lin Chengyan.The conception,method and technique of seismic sedimentology.Acta Sedimentologica Sinica,2008;27(4):75—79
5 陈旭,陈红汉,董玉文等.地震沉积学研究方法评析.沉积与特提斯地质,2010;30(1):54—60Chen Xu,Chen Honghan,Dong Yuwen.Research method appraise of seismic sedimentology.Sedimentary Geology and Tethyan Geology,2010;30(1):54—60
6 Zeng H L,Backus M M,Barrow K T.Facies mapping from three-dimensional seismic data:potential and guidelines from a Tertiary sandstone-shale sequence model,Powderhorn field,Calhoun County,Texas.AAPG Bulletin,1996;80(1):14—46
2 曹强,叶加仁,石万忠.地震属性在南黄海北部盆地勘探新区烃源岩厚度预测中的应用.海洋地质与第四纪地质,2008;28(5):109—114Cao Qiang,Yejiaren,Shi Wanzhong.The seismic attributes application of generating rock thickness in new prospect of north basin in south Yellow Sea.Marine Geology&Quaternary Geology,2008;28(5):109—114
3 曹强,叶加仁.南黄海北部盆地东北凹陷烃源岩的早期预测.地质科技情报,2008;27(4):75—79Cao Qiang,Ye Jiaren.Early generating rock projection in northeast sag of north basin in South Yellow Sea.Geological Science and Technology,2008;27(4):75—79
4 董春梅,张宪国,林承焰.地震沉积学的概念、方法和技术.沉积学报,2006;24(5):698—704Dong Chunmei,Zhang Xianguo,Lin Chengyan.The conception,method and technique of seismic sedimentology.Acta Sedimentologica Sinica,2008;27(4):75—79
5 陈旭,陈红汉,董玉文等.地震沉积学研究方法评析.沉积与特提斯地质,2010;30(1):54—60Chen Xu,Chen Honghan,Dong Yuwen.Research method appraise of seismic sedimentology.Sedimentary Geology and Tethyan Geology,2010;30(1):54—60
6 Zeng H L,Backus M M,Barrow K T.Facies mapping from three-dimensional seismic data:potential and guidelines from a Tertiary sandstone-shale sequence model,Powderhorn field,Calhoun County,Texas.AAPG Bulletin,1996;80(1):14—46
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