| 准噶尔盆地石南地区清水河组一段层序地层特征 |
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| 引用本文： | 赵霞,于兴河,黄兴文,石新朴,马丽.准噶尔盆地石南地区清水河组一段层序地层特征[J].沉积学报,2007,25(5):716-721. |
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| 作者姓名： | 赵霞 于兴河 黄兴文 石新朴 马丽 |
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| 作者单位： | 中国地质大学能源学院 北京 100083 |
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| 摘 要： | 清水河组一段是石南31井区岩性油藏、石南44井区微幅构造油藏及整个腹部地区的重要产层，探究其层序地层特征对于指导研究区及整个腹部地区清水河组一段的隐蔽油气藏勘探有重要意义。通过对岩心、测井、地震等资料综合分析，指出清水河组一段相当于下白垩统第一个三级层序的低位及湖侵体系域。其层序地层特征显著，表现为:低位体系域以沟谷残余可容纳空间充填沉积为特点，分布较为局限，沟谷主要沉积辫状河道砂砾岩；湖侵体系域以退积型三角洲和三角洲前缘滑塌浊积扇沉积为主。建立了石南31井区的成藏模式，并指出三南凹陷中西部是岩性—地层油气藏勘探的有利区带。沟谷砂砾岩及三角洲前缘滑塌浊积扇可形成岩性圈闭，退积型三角洲可形成地层超覆圈闭；湖侵体系域顶部的泥岩可做为区域盖层；斜坡古地貌、深大断裂—中浅层断裂系统与不整合匹配为有效的输导体系。
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| 关 键 词： | 沟谷残余可容纳空间 滑塌浊积扇 清水河组一段 石南地区 准噶尔盆地 |
| 文章编号： | 1000-0550（2007）05-0716-06 |
| 收稿时间： | 2007-03-27 |
| 修稿时间： | 2007-04-27 |
Sequence Stratigraphic Characteristics of the First Member of Qingshuihe Formation in Shinan Area, Junggar Basin |
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| ZHAO Xia,YU Xing-he,HUANG Xing-wen,SHI Xin-pu,MA Li.Sequence Stratigraphic Characteristics of the First Member of Qingshuihe Formation in Shinan Area, Junggar Basin[J].Acta Sedimentologica Sinica,2007,25(5):716-721. |
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| Authors: | ZHAO Xia YU Xing-he HUANG Xing-wen SHI Xin-pu MA Li |
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| Institution: | School of Energy Resources, China University of Geosciences, Beijing 100083 |
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| Abstract: | The first member of Qingshuihe Formation is a major pay formation of the lithologic oil reservoir in Well Shinan 31 area,of the low-amplitude structural oil reservoir in Well 44 Shinan area,and of the whole hinterland region in Junggar Basin.Researching its sequence stratigraphic characteristics is significant for the prospecting on subtle reservoir in Shinan area,even in the whole hinterland region.Based on the comprehensive analysis of cores,logs and seismic data,this paper points out that the first member of Qingshuihe Formation corresponds with the sediments of the lowstand and transgressive systems tracts of the first third class sequence in Lower Cretaceous.The sequence stratigraphy is characterized by as follows:the lowstand systems tracts,distributing limited,is consisted of the remained accommodation sediments in trench and valley,which deposited mainly pebbly sandstone of braided channel;the transgressive systems tracts develops retrograding delta and delta front slumping turbidity fan.The paper sets up a model for the hydrocarbon reservoir forming in Well Shinan 31 area and concludes that the middle-western part of Sannan depression is the favorable prospecting region for the type of stratigraphic-lithologic reservoir.Regionally,the stratigraphic traps make up of the channel pebbly sandstone and the slumping turbidite fan occurred in deltafront,and,the lithologic traps make up of the retrograding delta;the mudstone on the top of the transgressive systems tracts can be regarded as the seal;The effective passage system is matched up with the slope palaeotopography,the discordogenic fault,middle-shallow fault system,and the unconformity. |
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| Keywords: | valley remained accommodation slumping turbidity fan the first member of Qingshuihe Formation Shinan Area Junggar Basin |
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