准噶尔盆地小拐油田佳木河组中段沉积相辨析
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摘要
准噶尔盆地西北缘小拐油田二叠系佳木河组中段沉积相一直被认为是冲积扇相或扇三角洲相。然而根据沉积特征、构造环境和地震反演结果分析,认为这套粗碎屑混杂堆积,结构构造成熟度非常低,毫无水动力搬运痕迹,不具备冲积扇的一些基本特征,同时发育大量火山熔岩、火山凝灰岩,对此应合理解释为火山喷发相沉积。
The sedimentary facies of the middle member of Permian Jiamuhe formation in Xiaoguai oilfield in northwestern margin of Junggar basin was always considered as alluvial fan or fan delta facies deposit.However,from point of view of petrology,it is definitely different from the standard alluvial fan facies.As early as 1996 it was considered as volcanic eruptive facies,but at that time,"fan control" theory was prevalent,this understanding was not paid more attention to.On the fifteenth anniversary of the reservoir exploration,this paper presents the understandings about it,so as to deepen the recognition of petroleum geology in this area.
The sedimentary facies of the middle member of Permian Jiamuhe formation in Xiaoguai oilfield in northwestern margin of Junggar basin was always considered as alluvial fan or fan delta facies deposit.However,from point of view of petrology,it is definitely different from the standard alluvial fan facies.As early as 1996 it was considered as volcanic eruptive facies,but at that time,"fan control" theory was prevalent,this understanding was not paid more attention to.On the fifteenth anniversary of the reservoir exploration,this paper presents the understandings about it,so as to deepen the recognition of petroleum geology in this area.
引文
1)薛新克.西北缘隐蔽油气藏形成条件与勘探目标,1996.
2)马辉树.小拐油田夏子街组油藏地质特征及勘探前景,1996.3.
3)赵玉光准噶尔盆地西北缘环中拐、五八区二叠系有利储层预测,
[1]曹宏,姚逢昌,宋新民,等.小拐油田夏子街组冲积扇沉积微相[J].石油与天然气地质,1999,20(1):62-65.
[2]刘宝珀君.沉积岩石学[M].北京:地质出版社,1980:366-367.
[3]孙国强,姚卫江,张顺存,等.准噶尔盆地中拐地区石炭系-二叠系火山岩地球化学特征[J].新疆石油地质,2011,32(4):580-582.
2)马辉树.小拐油田夏子街组油藏地质特征及勘探前景,1996.3.
3)赵玉光准噶尔盆地西北缘环中拐、五八区二叠系有利储层预测,
[1]曹宏,姚逢昌,宋新民,等.小拐油田夏子街组冲积扇沉积微相[J].石油与天然气地质,1999,20(1):62-65.
[2]刘宝珀君.沉积岩石学[M].北京:地质出版社,1980:366-367.
[3]孙国强,姚卫江,张顺存,等.准噶尔盆地中拐地区石炭系-二叠系火山岩地球化学特征[J].新疆石油地质,2011,32(4):580-582.
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