地学前缘 ›› 2012, Vol. 19 ›› Issue (2): 24-31.

• 论文 • 上一篇    下一篇

应用遥感信息图像研究现代水下分流河道河流类型

马世忠，张永清   

  1. 1. 东北石油大学 地球科学学院，  黑龙江  大庆 163318 2. 中国石油吉林油田分公司 油藏评价处， 吉林  松原 138000
  • 收稿日期:2011-12-30 修回日期:2012-02-20 出版日期:2012-03-25 发布日期:2012-03-25
  • 作者简介:马世忠（1963—），男，博士，教授，博士生导师，矿物学、岩石学、矿床学专业，主要从事沉积学、油气田开发地质学教学、研究工作。E-mail: szm6503@sina.com
  • 基金资助:

    国家科技重大专项（2011ZX05010001008）；教育部高等学校博士学科点专项科研基金项目（20092322110001）；黑龙江省教育厅科学技术研究项目（11521010）

Research on the channel pattern of present subaqueous distributary channel by remote sensing image.

 MA  Shi-Zhong, ZHANG  Yong-Qing   

  1. 1. Geoscience College,Northeast Petroleum University, Daqing 163318, China 2. Reservoir Evaluation Department，Jilin Oilfield, PetroChina, Songyuan 138000, China
  • Received:2011-12-30 Revised:2012-02-20 Online:2012-03-25 Published:2012-03-25

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摘要：


水下分流河道是三角洲前缘亚相最重要的微相类型及油气优质储层之一，但目前对水下分流河道河型研究较少，其是否存在曲流河型、辫状河型？有无其他河型？是否存在高角度转弯现象等问题尚不十分清楚，并直接影响高含水期及三次采油阶段水下分流河道单砂体精细刻画、内部构型或建筑结构、三维非均质性模式等研究，为此，弄清水下分流河道河型成为既急需又具有理论意义的关键问题。针对这一关键问题，以现代沉积为重要钥匙，采用能整体、细致揭示河道平面形态及特征的遥感信息法（卫星图像）对41条现代水下分流河道进行深入剖析，确定水下河型；将水下分流河道分为4带、划分3类8亚类河型，并论述了其特征及形成条件；通过41条现代水下分流河道的河型统计得出：顺直型水下分流河道是最常见河型，低弯度型、高弯度型、辫状型、网状型等河型少见且皆发育于不同地质背景的近岸水下环境。

关键词: 水下分流河道, 河型, 现代河流, 河道单砂体, 形成机制

Abstract:

Subaqueous distributary channel is one of the most important microfacies types and highquality reservoirs in deltafront subfacies, but little research of subaqueous distributary channel pattern has been carried out. Whether there is meandering or braided pattern or any other subaqueous channels and whether there is high angle turning is not clear, which directly affect the research of fine characterization, architecture, threedimensional heterogeneous model of subaqueous channel monosandbody in high watercut stage and tertiary phase. Therefore, it is of great theoretic significance and badly needed to ravel the subaqueous channel pattern. Focused on this problem, our study used the remote sensing method (satellite image) which can integrally and finely reveal the plane configuration and the character of subaqueous channel to thoroughly dissect 41 present subaqueous channels and determine subaqueous channel patterns, to classify subaqueous channel region into 4 zones, 3 types and 8 subtypes of channel pattern and discuss  their characteristics and formation condition. Based on the statistics of the channel pattern of 41 present subaqueous channels, it is concluded that  straight channel pattern is common, while lowsinuosity, highsinuosity, braided and anastomosed channel patterns are rare and are normally developed in the  nearshore subaqueous environment in different geological settings.

Key words: subaqueous distributary channel, channel pattern, present river, channel monosandbody, formation mechanism

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