西南石油大学学报(自然科学版) ›› 2024, Vol. 46 ›› Issue (1): 35-52.DOI: 10.11885/j.issn.1674-5086.2022.01.13.04

• 地质勘探 • 上一篇    下一篇

游荡型辫状河沉积特征及沉积相模式

王海考1, 王淼1, 于忠良1, 余成林1, 尹艳树2   

  1. 1. 中国石油冀东油田勘探开发研究院, 河北 唐山 063200;
    2. 长江大学地球科学学院, 湖北 武汉 430100
  • 收稿日期:2022-01-13 出版日期:2024-02-10 发布日期:2024-02-01
  • 通讯作者: 尹艳树,E-mail:yys@yangtzeu.edu.cn
  • 作者简介:王海考,1981年生,男,汉族,湖北荆州人,工程师,主要从事油气田开发地质方面的研究。E-mail:603179068@qq.com;王淼,1988年生,女,汉族,吉林松原人,工程师,硕士,主要从事油气田开发地质方面的研究。E-mail:wangmiao2013@petrochina.com.cn;于忠良,1981年生,男,汉族,黑龙江海伦人,高级工程师,硕士,主要从事油气田开发地质方面的研究。E-mail:yu_zhong_liang@126.com;余成林,1979年生,男,汉族,湖北仙桃人,高级工程师,博士,主要从事油气田地质及开发方面的研究工作。E-mail:29739365@qq.com;尹艳树,1978年生,男,汉族,湖北仙桃人,教授,博士研究生导师,主要从事油气田地质及储层建模方面的教学和研究工作。E-mail:yys@yangtzeu.edu.cn
  • 基金资助:
    国家自然科学基金(41872138)

Characteristics and Sedimentary Facies Model of Wandering Braided Rivers

WANG Haikao1, WANG Miao1, YU Zhongliang1, YU Chenglin1, YIN Yanshu2   

  1. 1. Exploration and Development Research Institute, Jidong Oilfield Company, PetroChina, Tangshan, Hebei 063200, China;
    2. School of Geosciences, Yangtze University, Wuhan, Hubei 430100, China
  • Received:2022-01-13 Online:2024-02-10 Published:2024-02-01

摘要: 针对冀东油田高104-5区块馆陶组辫状河模式认识不清、砂体预测不准的问题,开展砂质辫状河河型分类研究。首先,根据区域地质背景、古气候、岩石粒度、层理构造、相序、溢岸、落淤层发育情况以及砂体形态等指标确定研究区为游荡型辫状河。随后,以Miall构型要素分析理论为指导,建立了辫流带、单一辫流带内河道和心滩边界识别标志,实现了研究区游荡型辫状河结构解剖,确定研究区单一辫流带宽度平均1 400.00 m,单一辫流带内心滩平均长度为414.47 m,宽度平均为158.86 m,河道宽度平均53.18 m。心滩长宽比集中在2.0~4.0,心滩宽度与辫状河道宽度比为2.2,为宽坝窄河道辫状河沉积模式。最后采用沉积数值模拟的方法,建立了研究区游荡型辫状河沉积相模式,可为油田开发提供指导。

关键词: 游荡型辫状河, 河型分类, 沉积构型, 沉积相模式, 高104-5区块

Abstract: Aiming at the problem of unclear knowledge and unclear patterns of sandy braided river in Guantao Formation of Block Gao 104-5 in Jidong Oilfield, a classification study of sandy braided rivers was carried out, using criteria including regional geological background, paleoclimate, rock grain size, bedding structure and facies sequence, levee and mud drapes, and sand body morphology. The study area is determined to be a wandering braided river. Then, the architectural element analysis method from Miall is adopted to anatomize the wandering braided river. The two types of identification marks of braided belt boundary and 3 types of identification marks of river channel and mid channel bar are constructed to anatomize the wandering braided channel. The result shows that the scale of the channel belts are about 1 400.00 m wide, the width and length of mid channel bar are about 158.86 m and 414.47 m, respectively; the width of channel is 53.18 m. and the length/width of mid channel is about 2~4; the average width of mid channel bar and channel is 2.2. So the study area is categorized as the wide bar and narrow channel pattern. Finally, using depositional simulation methods, a wandering braided river sedimentary facies model in the study area was established to guide oilfield development.

Key words: wandering braided river, braided river classification, reservoir architecture, sedimentary facies model, Block Gao 104-5

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