四川通江—南江—巴中地区长兴组—飞仙关组沉积模式
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摘要
有关通江—南江—巴中地区长兴组—飞仙关组沉积模式及其空间分布的研究较少,并且较为粗略。以前认为该区发育开阔台地、缓坡和盆地等沉积相沉积,但对缓坡相尚未进行详细的划分,是否存在台地边缘礁滩相带未能提出明确的认识。因此,利用新的资料,开展长兴组—飞仙关组沉积相研究对通南巴地区的油气勘探具有非常重要的意义。本文在以往研究的基础上,利用地表露头和地震资料,初步建立了通南巴地区长兴组—飞仙关组沉积模式,认为该区存在台地边缘礁滩相带,建议油气勘探部门给予重视。
The Tongjiang-Nanjiang-Bazhongarea is an important exploration area of SINOPEC, with the main aim formations being the Permian Changxing Formationand the Triassic Feixianguan Formation. Because related geological data are limited, sedimentary modeland spatial distributions of these two formationsare rarely studied. It is known that sedimentary facies analysis is groundwork in the target selectionof oil-gas exploration. Various work indicated that the area was developed with open platform facies, rampfacies and basin facies. However, the rampfacies is notstudied in detail, and the reef-bank ontheedge oftheplatform is not confirmed. The papermakesuse of outcrop and seismicdata to establish a sedimentary modelof the Changxing-Feixianguan formationsin the Tongjiang-Nanjiang-Bazhongarea. As a result,a reef-bank on the edge of platform faciesis confirmedin the area,which requires special attention from the oil-gas exploration department.
The Tongjiang-Nanjiang-Bazhongarea is an important exploration area of SINOPEC, with the main aim formations being the Permian Changxing Formationand the Triassic Feixianguan Formation. Because related geological data are limited, sedimentary modeland spatial distributions of these two formationsare rarely studied. It is known that sedimentary facies analysis is groundwork in the target selectionof oil-gas exploration. Various work indicated that the area was developed with open platform facies, rampfacies and basin facies. However, the rampfacies is notstudied in detail, and the reef-bank ontheedge oftheplatform is not confirmed. The papermakesuse of outcrop and seismicdata to establish a sedimentary modelof the Changxing-Feixianguan formationsin the Tongjiang-Nanjiang-Bazhongarea. As a result,a reef-bank on the edge of platform faciesis confirmedin the area,which requires special attention from the oil-gas exploration department.
引文
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牟传龙,马永生,王瑞华,等.2005b.川东北地区上二叠统盘龙洞生物礁成岩作用研究.沉积与特提斯地质,25(1～2):198～202.
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马永生,郭旭升,郭彤楼,黄锐,蔡勋育,李国雄.2005a.四川盆地普光大型气田的发现与勘探启示.地质论评,51(4):477～480.
马永生,蔡勋育,李国雄.2005b.四川盆地普光大型气藏基本特征及成藏富集规律.地质学报,79(6):858～865.
马永生,牟传龙,郭彤楼,等.2005c.川东北地区飞仙关组层序地层与储层分布.矿物岩石,25(4):73～79
马永生,牟传龙,郭彤楼.2005d.四川盆地东北部长兴组层序地层与储层分布.地学前缘,12(3):179～185.
马永生,牟传龙,郭旭升,等.2006a.川东北地区长兴组沉积特征与沉积格局.地质论评,52(1):25～29.
马永生,牟传龙,谭钦银,余谦.2006b.关于开江-梁平海槽的认识.石油与天然气地质,27(3):326～331.
马永生,牟传龙,谭钦银,余谦,王瑞华.2007.达县—宣汉地区长兴组—飞仙关组礁滩相特征及其对储层的制约.地学前缘,14(1):182～191.
牟传龙,谭钦银,王立全,余谦,等.2003a.四川宣汉盘龙洞晚二叠世生物礁古油藏的发现及其重要意义.地质论评,49(3):315.
牟传龙,谭钦银,王立全,余谦.2003b.四川宣汉盘龙洞晚二叠世生物礁古油藏剖面序列.沉积与特提斯地质,23(3):60～64.
牟传龙,谭钦银,余谦,王立全,王瑞华.2004.川东北地区上二叠统长兴组生物礁组成及成礁模式.沉积与特提斯地质,24(3):56～71.
牟传龙,马永生,余谦,郭旭升,谭钦银,李国雄.2005a.四川通江诺水河二叠纪-三叠纪界线地层牙形石的发现.地层学杂志,29(4):372～375.
牟传龙,马永生,王瑞华,等.2005b.川东北地区上二叠统盘龙洞生物礁成岩作用研究.沉积与特提斯地质,25(1～2):198～202.
Ma Yongsheng,Mou Chuanlong,Guo Xusheng.2006a.Sedi mentary facies and distribution of the reservoir rocks from the Feixianguan Formation in the Daxian-Xuanhan region,northeastern Sichuan.Acta Geologica Sinica(English Edition),80(1):137～151.
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