印尼库特盆地深海区中北部沉积波动与油气分布特征

doi:10.11743/ogg20150321

摘要/Abstract

摘要： 对印尼库特盆地深海区中北部中中新统以上地层开展沉积波动分析及波动与油气分布的关系研究，应用米兰科维奇旋回地层定年方法对研究区内的单井地层进行定年，建立精细地层年代格架，并计算精细沉积速率曲线。应用地质滤波法从精细沉积速率曲线中提取出周期分别约为6，3.7，1.85和0.4 Ma的4个主要波动，它们与成藏要素的形成及油气分布有重要关系。其中，6 Ma周期波动对研究区内的成藏要素形成起主要控制作用，在它控制下形成上、下两套成藏组合，上部成藏组合以下更新统底部—上新统中部泥岩为盖层，以上新统下部—上中新统上部砂岩为储层;下部成藏组合以上中新统中部泥岩为盖层，以上中新统下部—中中新统顶部砂岩为储层。其它短周期波动对6 Ma周期波动控制下的储层与盖层形成过程有一定影响，它们决定了6 Ma周期波动控制下局部位置储层与盖层发育情况。0.4 Ma周期波动是米兰科维奇旋回中0.40 Ma长偏心率旋回，对研究区高频沉积旋回起主控作用。同时，研究结果显示研究区内油气分布受盖层控制，6 Ma周期波动和3.7 Ma周期波动双重控制下的有利盖层发育叠加区之下均是油气发现区或地震反射异常区。

关键词: 波动分析, 米兰科维奇旋回, 中新统, 库特盆地, 印度尼西亚

Abstract: The relationiship between sedimentary undation and hydrocarbon distribution in the formations above the mid-Miocence in northern and central deep-sea area of Kutei Basin, Indonesia, was idnetified through Milankovitch cycles da-ting of single wells, construction of chronostratigraphic framework, and calculatin of sedimentation rates in the study area.Four major undation periods(about 6, 3.7, 1.85 and 0.4 Ma)that had important relationships with hydrocarbon reser-voiring and distribution were recognized on fine sedimentation rate curves by using geological wave filtering methods.The undation period during 6 Ma was considered to control the formation of two plays(upper and lower).The upper play had the lower Pliocene-the Upper Miocene sandstone as the reservoirs and the bottom Lower Pleistocene-the middle Pliocene mudstone as the caprocks.And the lower play had the lower Upper Miocene-the top Middle Miocene as the reseservoirs and the middle Upper Miocene mudstone as the caprocks.Other undation periods also contributed to the development of reservoirs and caps controlled by the 6 Ma period.The undation period of 0.4 Ma was the long-eccentricity cycles among Milankovitch cycles and the major controlling factor for the formation of high-frequency sedimentary cycles.The study also shows that hydrocarbon distribution was controlled by the caprocks in the study area.All areas where favorable caprocks jointly controlled by the undation periods of 6 Ma and 3.7 Ma superimpose have oil/gas discoveries or abnormal seismic reflections.

Key words: undation analyses, Milankovitch cycle, Miocene, Kutei Basin, Indonesia

中图分类号:

TE122.1

吴宝年,金之钧. 印尼库特盆地深海区中北部沉积波动与油气分布特征[J]. 石油与天然气地质, 2015, 36(3): 510-516. doi: 10.11743/ogg20150321 Wu Baonian,Jin Zhijun. Sedimentary undation and hydrocarbon distribution features in northern and central deep-sea area of Kutei Basin,Indonesia[J]. Oil & Gas Geology, 2015, 36(3): 510-516. doi: 10.11743/ogg20150321

参考文献

[1] 张伯声.中国地壳的波浪状镶嵌构造[M].北京:科学出版社, 1980:1-90. Zhang Bosheng.Wavy mosaic structure of the crust in Chian[M].Beijing:Science Press, 1980:1-90.
[2] 张伯声.地壳波浪与镶嵌构造研究[M].西安:陕西科学技术出版社, 1982:6-26. Zhang Bosheng.Research on wavy mosaic structure of the crust[M].Xi'an:Shaanxi Science & Technology Press, 1982:6-26.
[3] 张一伟.山东西部箕状凹陷形成的探讨——初论地壳波状运动[J].石油学报, 1983, 4( 4):19-25. ZhangYiwei.On the formation of dustpan-shaped depressions in the western part of Shandong—a preliminary discussion on wave-like crustal movement[J].Acta Petrolei Sinica, 1983, 4(4):19-25.
[4] 张一伟, 李京昌, 金之钧, 刘国臣.中国含油气盆地波状运动特征研究[J].地学前缘(中国地质大学, 北京), 1997, 4(3-4):305-311. Zhang Yiwei, Li Jingchang, Jin Zhijun, et al.The Characteristics of the crustal wave movement of the Chinese petroliferous basins[J].Earth Science Frontiers(China University of Geosciences, Beijing), 1997, 4 (3-4):305-311.
[5] 金之钧, 李京昌, 汤良杰, 等.柴达木盆地新生代波动过程及与油气关系[J].地质学报, 2006, 80(3):359-365. Jin Zhijun, Li Jingchang, Tang Liangjie, et al.Genozoic wave processes and their relationships to hydrocarbon in the Qaidam basin[J].Acta Geologica Sinica, 2006, 80(3):359-365.
[6] 金之钧, 张一伟, 陈书平.塔里木盆地构造—沉积波动过程[J].中国科学D辑地球科学, 2005, 35(6):530-539. Jin Zhijun, Zhang Yiwei, Chen Shuping.The process of fluctuations on structure and deposition, Tarim basin[J].Science in China(Series D), 2005, 35(6):530-539.
[7] 金之钧, 范国章, 刘国臣.一种地层精细定年的新方法[J].地球科学—中国地质大学学报, 1999, 24(4):379-382. Jin Zhijun, Fan Guozhang, Liu Guochen.A new method for accurate dating of strata[J].Earth Science-Journal of China University of Geosciences, 1999, 24(4):379-382.
[8] 范国章, 金之钧, 刘国臣, 等.塔里木盆地高频波识别及其意义[J].沉积学报, 2001, 19(2):245-248. Fan Guozhang, Jin Zhijun, Liu Guochen, et al.Identification and significance of the high-frequency waves in Tarim Basin[J].Acta Sedimentologica Sinica, 2001, 19(2):245-248.
[9] 金之钧, 张一伟, 刘国臣, 李京昌.沉积盆地物理分析—波动分析[J].地质论评, 1996, 42(增刊):170-179. Jin Zhijun, Zhang Yiwei, Liu Guochen, et al.Physical analysis method for sedimentary basin—wave analysis[J].Geological Review, 1996, 42(Sup.):170-179.
[10] 李京昌, 金之钧, 孙强.盆地波动分析中的数学模型及计算机实现[J].地质评论, 1996, 42(增刊):276-282. Li Jingchang, Jin Zhijun, Sun Qiang.Numerical model and its computerization for wave analysis in basin study[J].Geological Review, 1996, 42(Sup.):276-282.
[11] 李京昌, 金之钧, 刘国臣, 等.100Ma-塔里木盆地演化的重要周期[J].地学前缘(中国地质大学, 北京), 1997, 4(3-4):312-317. Li Jingchang, Jin Zhijun, Liu Guochen, et al.100 Ma—an important interval in the evolution of the Tarim basin[J].Earth Science Frontiers(China University of Geosciences, Beijing), 1997, 4(3-4):312-317.
[12] 李京昌, 金之钧, 刘国臣.盆地沉降史研究的新方法-波动分析[J].地球科学进展, 1997, 12(5):479-483. Li Jingchang, Jin Zhijun, Liu Guochen.A new method for studying basin sedimentation history:wave analysis[J].Advance in Earth Sciences, 1997, 12(5):479-483.
[13] 张一伟, 李京昌, 金之钧, 刘国臣.原型盆地剥蚀量计算的新方法——波动分析法[J].石油与天然气地质, 2000, 21(1):88-91. Zhang Yiwei, Li Jingchang, Jin Zhijun, et al.A new calculating method of denuded amount for prototype basin—wave analysis[J].Oil & Gas Geology, 2000, 21(1):88-91.
[14] Daly M C, 项光, 金康辰.印度尼西亚新生代板块构造和盆地演化[J].海洋地质丛译, 1991, 20(5):50-62. M.C.Daly, et al, Xiang Guang, Jin Kangchen translating.Indonesia Cenozoic plate tectonic and basin evolution[J].Marine and Petroleum Geology, 1991, 20(5):50-62.
[15] Saller A, Lin R, Dunham J.Leaves in turbidite sands:The main source of oil and gas in the deep-water Kutei Basin, Indonesia[J].AAPG Bulletin, 2006, 90(10):1585-1608.
[16] 刘国臣, 李京昌, 金之钧, 等.波动地质学研究中资料的收集与整理[J].石油大学学报(自然科学版), 1994, 18(6):1-7. Liu Guochen, Li Jingchang, Jin Zhijun, et al.Collection and sorting out of analysis data in wave geology[J].Journal of the University of Petroleum, China, 1994, 18(6):1-7.
[17] 赵全基.赤道太平洋西部深海沉积作用[J].海洋学报, 1984, 6(5):647-656. Zhao Quanji.Deep sea sedimentation in the western equatorial Pacific Ocean[J].Atca Oceanologica Sinica, 1984, 6(5):647-656.
[18] 李培英, 王永吉, 刘振夏.冲绳海槽年代地层与沉积速率[J].中国科学(D辑), 1999, 29(1):50-55. Li Peiying, Wang Yongji, Liu Zhenxiao.Chronostratigraphy and deposition rates in the Okinawa Trough[J].Science in Chian(Series D), 1999, 42(4):50-55.
[19] 章森林, 张允白, 严惠君."国际地层表"(2008)简介[J].地层学杂志, 2009, 33(1):1-10. Zhang Sengui, Zhang Yunbai, Yan Huijun.A brief introduction to the "international stratigraphic chart"(2008)[J].Journal of Stratigraphy, 2009, 33(1):1-10.
[20] Kerr R A.Milankovitch climate cycles:old and unsteady[J].Science, 1981, 213:1095-1096.