黑池梁地区长兴组—飞仙关组沉积相及储层预测
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摘要
黑池梁地区是川东北通南巴构造带中隆升幅度最高的部位,长兴组—飞仙关组沉积时处于广旺—开江梁平陆棚东侧,具有发育礁滩相储层的沉积背景。通过地表露头、岩心观察和钻井资料分析,认为黑池梁地区长兴组—飞仙关组可划分为陆棚相、台地前缘斜坡相、台地边缘生物礁滩相、开阔台地相、局限台地和台地蒸发岩6个相带。依托三维地震资料,结合已知礁滩相气藏的勘探成果、地震反射特征和地震属性分析,建立了该地区长兴组—飞仙关组沉积及储层发育模式,预测M2井以东地区与H1井井区为礁滩相储层有利勘探目标区。
Heichiliang area is one location with the largest uplift in Tongnanba structure belt, northeastern Sichuan Basin. Changxing and Feixianguan formations in this area are deposited at east margin of Guangwang-Kaijiang-Liangping continental shelf and a sedimentary pattern of both bioreef- and shoal-facies reservoirs are developed here. In this study, it is considered after an analysis on the outcrop, core observation and drilling data that, Changxing-Feixianguan formations in Heichiliang area can be classified into six facies belts, including continental shelf facis, platform frontal slope facies, platform marginal bioreef and shoal facies, open platform facies, restricted platform facies and platform evaporite facies. In addition, a set of both sedimentary and reservoir development pattern of Changxing-Feixianguan formations is established based on the 3D seismic data, the given exploration achievements, the analysis on seismic reflection characteristics and seismic attribute. H1 well area, east of M2 well, is a favorable exploration target for bioreef- and shoal-facies reservoir can be predicted by the pattern.
Heichiliang area is one location with the largest uplift in Tongnanba structure belt, northeastern Sichuan Basin. Changxing and Feixianguan formations in this area are deposited at east margin of Guangwang-Kaijiang-Liangping continental shelf and a sedimentary pattern of both bioreef- and shoal-facies reservoirs are developed here. In this study, it is considered after an analysis on the outcrop, core observation and drilling data that, Changxing-Feixianguan formations in Heichiliang area can be classified into six facies belts, including continental shelf facis, platform frontal slope facies, platform marginal bioreef and shoal facies, open platform facies, restricted platform facies and platform evaporite facies. In addition, a set of both sedimentary and reservoir development pattern of Changxing-Feixianguan formations is established based on the 3D seismic data, the given exploration achievements, the analysis on seismic reflection characteristics and seismic attribute. H1 well area, east of M2 well, is a favorable exploration target for bioreef- and shoal-facies reservoir can be predicted by the pattern.
引文
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[6]刘殊,唐建明,马永生,等.川东北地区长兴组—飞仙关组礁滩相储层预测[J].石油天然气地质,2006,27(3):332-347.
[7]刘殊,甘其刚.碳酸盐岩沉积相分析在飞仙关组鲕滩储层预测中的应用[J].勘探地球物理进展,2003,26(3):190-198.
[8]马永生,牟传龙,谭钦银.关于开江—梁平海槽的认识[J].石油天然气地质,2006,27(3):326-331.
[9]许效松,刘宝君,赵玉光.上扬子西缘二叠纪—三叠纪层序地层与盆山转换耦合[M].北京:地质出版社,1997.
[10]架振远.碳酸盐岩沉积学[M].北京:中国地质大学出版社,1992.
[11]陈祖庆,杨宏飞,王涛.川东北宣汉—达县地区礁滩相储层地震预测研究[J].南方油气,2005,18(4):31-36.
[12]蒲勇,陈祖庆,田江.地震属性技术在碳酸盐岩鲕滩储层预测中的应用[J].石油物探,2004,43(4,增刊):62-66.
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