琼东南盆地长昌凹陷三亚组深水扇储层地震正演模拟研究
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摘要
以琼东南盆地长昌凹陷三亚组深水扇为研究对象,综合利用测井、地震等资料,以深水扇典型地震相展布特征为基础,建立深水扇不同类型地震相的砂泥组合地质模型,并对其进行系统的地震正演模拟。研究结果表明,研究区深水扇主要包括发散充填、丘状反射、侧向加积和顶底强反射四种典型地震相;四种地震相皆对应一套不同组合的砂泥岩互层沉积;同相轴的个数受泥岩夹层个数及厚度的影响,泥岩夹层个数不变,同相轴个数在一定范围内随泥岩夹层厚度增大而增多,泥岩夹层厚度不变,同相轴个数在一定范围内随泥岩夹层个数增大而增多;当泥岩夹层厚度大于20m时,反射同相轴呈现强振幅,当泥岩夹层厚度小于10m时,反射同相轴呈现弱振幅。
Taking the deep-water fan of Sanya formation in Changchang sag of Qiongdongnan Basin as the research object,using the logging and seismic data synthetically,based on the distribution characteristics of typical seismic facies of deep-water fan,a sand and mud combination geological model of different types of seismic facies of deep-water fan is established.And the system forward simulation of earthquake is carried out.The results show that the deep water fan in the study area mainly includes four typical seismic facies,namely divergence filling,mound reflection,lateral accretion and strong top and bottom reflection,the four seismic facies all correspond to a set of sand and mudstone interbedded deposits of different assemblages.The number of axis is affected by the number and thickness of mudstone intercalation,the number of mudstone intercalation is not changed,the number of cophase axis increases with the increase of mudstone intercalation thickness in a certain range,and the mudstone intercalation thickness does not change.The number of cophase axis increases with the increase of mudstone intercalation in a certain range.When the thickness of mudstone intercalation is more than 20 m,the reflection cophase axis presents strong amplitude,and when the thickness of mudstone intercalation is less than 10 m,the reflection cophase axis presents weak amplitude.
Taking the deep-water fan of Sanya formation in Changchang sag of Qiongdongnan Basin as the research object,using the logging and seismic data synthetically,based on the distribution characteristics of typical seismic facies of deep-water fan,a sand and mud combination geological model of different types of seismic facies of deep-water fan is established.And the system forward simulation of earthquake is carried out.The results show that the deep water fan in the study area mainly includes four typical seismic facies,namely divergence filling,mound reflection,lateral accretion and strong top and bottom reflection,the four seismic facies all correspond to a set of sand and mudstone interbedded deposits of different assemblages.The number of axis is affected by the number and thickness of mudstone intercalation,the number of mudstone intercalation is not changed,the number of cophase axis increases with the increase of mudstone intercalation thickness in a certain range,and the mudstone intercalation thickness does not change.The number of cophase axis increases with the increase of mudstone intercalation in a certain range.When the thickness of mudstone intercalation is more than 20 m,the reflection cophase axis presents strong amplitude,and when the thickness of mudstone intercalation is less than 10 m,the reflection cophase axis presents weak amplitude.
引文
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[18]张京思,揣媛媛,边立恩.正演模拟技术在渤海油田X井区砂体连通性研究中的应用[J].岩性油气藏,2016,28(03):127~132.
[2]晏英凯,韩银学,马明,等.琼东南盆地宝岛——长昌凹陷三亚组三角洲—深水扇发育特征与物源分析[J].天然气地球科学,2017,28(10):1565~1573.
[3]杜同军.琼东南盆地层序地层和深水区沉积充填特征[D].北京:中国海洋大学,2013.
[4]王艳.南海琼东南盆地深水区储层类型及研究意义[J].沉积与特提斯地质,2014,34(3):82~87.
[5]李俊良,左倩媚,解习农,等.琼东南盆地深水区新近系沉积特征与有利储盖组合[J].海洋地质与第四纪地质,2011,31(6):109~116.
[6]王振峰,李绪深,孙志鹏,等.琼东南盆地深水区油气成藏条件和勘探潜力[J].中国海上油气,2011,23(1):7~13.
[7] Yao G S,Yuan S Q,Shi-Guo W U,et al.Double provenance depositional model and exploration prospect in the deep-water area of Qiongdongnan Basin[J].Petroleum Exploration&Development,2008,35(6):685~691.
[8] Xie Y,Xushen L I,Fan C,et al.The axial channel provenance system and natural gas accumulation of the Upper Miocene Huangliu Formation in Qiongdongnan Basin,South China Sea[J].Petroleum Exploration&Development,2016,43(4):570~578.
[9]陶维祥,何仕斌,赵志刚,等.琼东南盆地深水区储层分布规律[J].石油实验地质,2006,(6):554~559.
[10]周杰,杨希冰,甘军,等.琼东南盆地深水区断裂对沉积充填的控制作用[J].特种油气藏,2017,24(2):75~79.
[11]李超,陈国俊,张功成,等.琼东南盆地深水区东段中中新世深水扇发育特征及物源分析[J].天然气地球科学,2017,28(10):1555~1564.
[12]姚哲,朱继田,左倩媚,等.琼东南盆地深水区重力流沉积体系及油气勘探前景[J].天然气工业,2015,35(10):21~30.
[13]张娜,姜涛,张道军.琼东南盆地海底地形地貌特征及其对深水沉积的控制[J].海洋地质与第四纪地质,2012,32(05):27~33.
[14]姜涛.莺歌海—琼东南盆地区中中新世以来低位扇体形成条件和成藏模式[D].北京:中国地质大学,2005.
[15]李伟,左倩媚,张道军,等.琼东南盆地深水区中央峡谷黄流组储层特征及主控因素[J].海洋学报,2016,38(11):117~124.
[16]左倩媚,张道军,王亚辉,等.琼东南盆地深水区新近系海底扇沉积特征与资源潜力[J].海洋学报,2016,38(11):105~116.
[17]蔡佳.琼东南盆地长昌凹陷新近系三亚组沉积相[J].岩性油气藏,2017,29(5):46~54.
[18]张京思,揣媛媛,边立恩.正演模拟技术在渤海油田X井区砂体连通性研究中的应用[J].岩性油气藏,2016,28(03):127~132.