石油勘探与开发 >

2017 , Vol. 44 >Issue 5: 727 - 736

DOI: https://doi.org/10.11698/PED.2017.05.07

油气勘探

浅水三角洲砂体类型及沉积模式——以松辽盆地南部乾安地区白垩系姚家组一段为例

  • 张莉 ,
  • 鲍志东 ,
  • 林艳波 ,
  • 陈玉明 ,
  • 林晓海 ,
  • 窦鲁星 ,
  • 孔彬
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  • 1. 中国石油大学（北京）地球科学学院,北京 102249;
    2. 中国石油大学（北京）油气资源与探测国家重点实验室,北京 102249;
    3. 中国石油长庆油田公司第五采油厂,西安 710021;
    4. 中国石油吉林油田公司勘探开发研究院,吉林松原 138001;
    5. 中国石油大学（北京）石油工程学院,北京 102249
张莉（1988-）,女,新疆乌鲁木齐人,中国石油大学（北京）地球科学学院在读博士研究生,主要从事沉积学及储集层地质学研究。地址：北京市昌平区府学路,中国石油大学（北京）地球科学学院,邮政编码：102249。E-mail：zhangx0522@qq.com

收稿日期: 2016-10-08

  修回日期: 2017-08-03

  网络出版日期: 2017-09-18

基金资助

国家科技重大专项（2008ZX05030-005-01; 2011ZX05004-004-007）

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Genetic types and sedimentary model of sandbodies in a shallow-water delta: A case study of the first Member of Cretaceous Yaojia Formation in Qian’an area, south of Songliao Basin, NE China

  • ZHANG Li ,
  • BAO Zhidong ,
  • LIN Yanbo ,
  • CHEN Yuming ,
  • LIN Xiaohai ,
  • DOU Luxing ,
  • KONG Bin
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  • 1. College of Geosciences, China University of Petroleum, Beijing 102249, China;
    2. State Key Laboratory of Petroleum Resource and Prospecting, China University of Petroleum, Beijing 102249, China;
    3. No.5 Oil Production Plant, PetroChina Changqing Oilfield Company, Xi’an 710021, China;
    4. Research Institute of Exploration and Development, PetroChina Jilin Oilfield Company, Songyuan 138001, China;
    5. College of Petroleum Engineering, China University of Petroleum, Beijing 102249, China

Received date: 2016-10-08

  Revised date: 2017-08-03

  Online published: 2017-09-18

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摘要

基于露头、岩心、测井、录井数据,结合现代沉积研究,分析松辽盆地南部长岭凹陷乾安地区白垩系姚家组一段（简称姚一段）浅水三角洲不同相带内砂体类型及空间分布规律,并根据沉积过程建立浅水三角洲沉积模式。姚一段浅水三角洲平原主要发育由活动水道、边滩及汊口浅滩组成的主干分流河道砂体和复合砂体,三角洲前缘主要发育末端分流河道及河口坝砂体。三角洲在河口建设作用和随后的河流冲刷改造作用控制下逐步推进,早期三角洲前缘逐渐演化为三角洲平原,并被分流河道沉积改造,在前方河口部位不断沉积形成新的三角洲前缘。在上述沉积过程控制下,三角洲平原—三角洲前缘的主干分流河道规模逐渐减小、河口坝保存程度逐渐变好,不同类型砂体组合形成受分流河道控制的浅水三角洲沉积。乾安地区姚一段浅水三角洲主干分流河道内部的边滩和活动水道砂体储集条件最好,是岩性油藏的有利发育部位。图13表1参20

关键词： 松辽盆地; 白垩系; 姚家组; 浅水三角洲; 砂体类型; 沉积模式

本文引用格式

张莉 , 鲍志东 , 林艳波 , 陈玉明 , 林晓海 , 窦鲁星 , 孔彬 . 浅水三角洲砂体类型及沉积模式——以松辽盆地南部乾安地区白垩系姚家组一段为例[J]. 石油勘探与开发, 2017 , 44(5) : 727 -736 . DOI: 10.11698/PED.2017.05.07

Abstract

Based on outcrop, core, logging and mud logging data, and modern deposition analog, the sandbodies genetic types and spatial distribution in different facies belts of the shallow water delta in the first Member of Cretaceous Yaojia Formation (K2y1) of Qian’an area in Changling sag of southern Songliao Basin were analyzed, and the sedimentary model of shallow water delta was established according to deposition process. Active channel sandbodies, point bar sandbodies and bifurcation bar sandbodies in distributary channels and complex sandbodies formed the main sandbodies in the delta plain, while terminal distributary channels and mouth bar sandbodies formed the main sandbodies in the delta front. The delta prograded gradually under the construction of river mouth and reconstruction of river erosion, the early delta front evolved into delta plain and was reformed by distributary channels, and new delta fronts were formed at the river mouth ahead constantly. Under the control of the above deposition process, the size of main distributary channels in delta plain-delta front declined, while mouth bars developed increasingly. The sandbodies of different genetic types formed framework of river-dominated shallow water delta. The point bar and active channel sandbodies in main distributary channels of the delta, with the best reservoir quality, are lithologic reservoir targets in future exploration.

Key words： Songliao Basin; Cretaceous; Yaojia Formation; shallow water delta; sandbody type; sedimentary model

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