ANALYSIS OF DEPOSITIONAL SYSTEMS OF MINGYUEFENG FORMATION IN THE LISHUI-JIAOJIANG SAG BASED ON COMPREHENSIVE MULTIPLE-FACTOR STUDIES
-
摘要:
通过对丽水—椒江凹陷古近系明月峰组的多种单因素沉积学分析要素——岩心相、测井相、地震属性和地震相、古生物相、有机地化与岩石地化(颜色)、古地貌与构造等的详细研究,系统阐明了各沉积学分析要素的展布规律及空间配置关系。多种单因素沉积学分析要素综合取证,相互补充,相互佐证,有效地对研究区的沉积体系类型、空间配置关系进行了客观分析与评价。研究认为,丽水—椒江凹陷古近系明月峰组发育三角洲体系、扇三角洲体系、重力流体系及海洋体系等4种主要的沉积体系。在较强断裂活动发育的东缘陡坡区域以扇三角洲发育为主;而在西缘缓坡区域主要发育三角洲及受次级断层控制的滑塌重力流。研究证明“多因素综合取证分析”方法在沉积体系研究中十分奏效。
Abstract:The Lishui-Jiaojiang Sag is a typical fault basin in China with great oil potential. Multiple factors, such as core facies, logging facies, seismic attributes, seismic facies, biofacies, organic geochemistry, rock color, paleogeomorphology and structures, are studied in details in this paper for the Paleogene Mingyuefeng Formation in the Lishui-Jiaojiang Sag. The spatial distribution pattern of these factors is systematically analyzed to decipher the depositional systems of the sag. There are four types of depositional systems in the Paleogene Mingyuefeng Formation in the sag, i. e., fan delta system, delta system, sea system and gravity flow system. The fan delta system is developed in the east on steep hills under the control of syndepositional faults, the delta system developed in the west on gentle slope, and the gravity flow system deposited under the control of intrabasinal secondary faults. The comprehensive analysis of multiple factors is proven effective for the depositional system analysis.
-
Key words:
- Lishui-Jiaojiang Sag /
- Mingyuefeng Formation /
- multiple factors /
- depositional system
-
[1] 陈志勇.丽水、椒江凹陷油气潜力分析和勘探突破口的选择[J].中国海上油气(地质), 1997, 11(6):451-458. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=QK199700712904
[2] 陈志勇, 吴培康, 吴志轩.丽水凹陷石油地质特征及勘探前景[J].中国海上油气(地质), 2000, 14(6):384-391. doi: 10.3969/j.issn.1673-1506.2000.06.003
[3] 郑求根, 周祖翼, 蔡立国, 等.东海陆架盆地中新生代构造背景及演化[J].石油与天然气地质, 2005, 26(2):197-201. doi: 10.3321/j.issn:0253-9985.2005.02.012
[4] 姜涌泉.浅析东海陆架盆地沉积作用的主要控制因素[J].南方油气地质, 1994, 1(1):68-75. http://hxyq.chinajournal.net.cn/WKB2/WebPublication/paperDigest.aspx?paperID=e44bb363-f321-40ff-b64f-3eba8407304c
[5] 周士科, 徐长贵.轴向重力流沉积:一种重要的深水储层——以东海盆地丽水凹陷明月峰组为例[J].地质科技情报, 2006, 25(5):57-62. doi: 10.3969/j.issn.1000-7849.2006.05.010
[6] 刘景彦, 陈志勇, 林畅松, 等.东海丽水西次凹古新统明月峰组层序—体系域分析及沉积体系展布[J].沉积学报, 2004, 22(3):380-386. doi: 10.3969/j.issn.1000-0550.2004.03.002
[7] 靳久强, 宋建国.中国板块构造对含油气盆地演化和油气分布特征的控制[J].石油与天然气地质, 2005, 26(1):2-8. doi: 10.3321/j.issn:0253-9985.2005.01.002
[8] 姜亮, 李保华, 钟石兰, 等.东海陆架盆地台北坳陷月桂峰组生物地层及古环境[J].海洋地质与第四纪地质, 2004, 24 (1):37-42. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=hydzydsjdz200401005
[9] 黄锋, 李志荣, 廖玲, 等.利用地震资料进行沉积相分析[J].物探化探计算技术, 2003, 25 (3):197-201. doi: 10.3969/j.issn.1001-1749.2003.03.002
[10] 凌云研究组.基本地震属性在沉积环境解释中的应用研究[J].石油地球物理勘探, 2003, 38(6):642-653. doi: 10.3321/j.issn:1000-7210.2003.06.011
[11] 朱仕军, 黄继祥.微地震相分析在沉积相研究中的应用[J].西南石油学院学报, 1995, 17(4):14-19. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=cdlgxyxb201304008
[12] 姜华, 王华, 肖军, 等.应用古地貌分析方法进行有利区带预测——以琼东南盆地②号断裂带为例[J].石油勘探与开发, 2009, 36(4):436-441. doi: 10.3321/j.issn:1000-0747.2009.04.004
[13] 赖生华, 李晓宏.断陷盆地沉积体系研究新思路:从古地貌、岩性变化、水体深度到沉积体系[J].沉积学报, 2007, 25(5):663-670. doi: 10.3969/j.issn.1000-0550.2007.05.002