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现代地质 ›› 2023, Vol. 37 ›› Issue (05): 1232-1242.DOI: 10.19657/j.geoscience.1000-8527.2023.021

• 沉积学 • 上一篇    下一篇

渤海湾盆地惠民凹陷商河地区古近系沙四上亚段滩坝沉积特征

束青林1(), 赵辉2, 姜在兴3(), 赵国光4   

  1. 1.中国石化胜利油田分公司,山东 东营 257061
    2.中国石化胜利油田分公司石油开发中心有限公司,山东 东营 257061
    3.中国地质大学(北京)能源学院,北京 100083
    4.地大汇能(北京)科技有限公司,北京 100085
  • 收稿日期:2022-10-03 修回日期:2023-03-07 出版日期:2023-10-10 发布日期:2023-11-14
  • 通讯作者: 姜在兴,男,博士,教授,博士生导师,1962年出生,沉积学专业,主要从事沉积学、层序地层学的教学和研究。Email:jiangzx@cugb.edu.cn
  • 作者简介:束青林,男,博士,教授级高级工程师,1966年出生,油藏开发地质及提高采收率专业,主要从事油田开发地质及提高采收率研究与管理工作。Email:shuqinglin.slyt@sinopec.com
  • 基金资助:
    国家科技重大专项(2017ZX05009-002)

Sedimentary Characteristics of Beach Bar in the Paleogene Upper Shahejie Formation (4th Member) in Shanghe Area, Huimin Depression, Bohai Bay Basin

SHU Qinglin1(), ZHAO Hui2, JIANG Zaixing3(), ZHAO Guoguang4   

  1. 1. SINOPEC Shengli Oilfield Company, Dongying, Shandong 257061, China
    2. Petroleum Development Center, SINOPEC Shengli Oilfield Company, Dongying, Shandong 257061, China
    3. School of Energy Resources, China University of Geosciences (Beijing), Beijing 100083, China
    4. Dida Huineng (Beijing) Technology Co.Ltd., Beijing 100085, China
  • Received:2022-10-03 Revised:2023-03-07 Online:2023-10-10 Published:2023-11-14

摘要:

滩坝砂体是一种较好的储集砂体,是近年来油气勘探的热点。渤海湾盆地惠民凹陷商河地区发育大量滩坝沉积,但是目前研究程度相对较低,且大部分研究基于大范围区域背景进行,而对于商河地区沙四段精细化的研究相对匮乏。本次基于测录井资料和岩心资料,分析商河地区沙四上亚段沉积微相类型和特征,并以体系域为单元,分析各时期沉积微相的平面展布规律以及控制因素。结果显示,商河地区沙四上亚段整体主要处于滨浅湖沉积环境,主要发育了风浪滩坝和风暴滩坝两种沉积相类型,沉积构造主要包括反映风浪作用的浪成沙纹层理和波状层理以及反映风暴作用的丘状和洼状交错层理,测井曲线形态可以分为齿化漏斗形、低幅齿形、中-高幅指形和箱形4种类型;沙四上亚段低位域以滨湖沉积环境为主,主要发育风浪滩坝,湖侵域和高位域两种滩坝类型均有发育。滩坝受到古物源、古水深和古地貌的控制,特别是在湖侵域和高位域时期,风浪滩坝发育于商河地区西北部水下低隆起区域,而风暴滩坝发育于东南部水体较深的低洼区域。

关键词: 商河地区, 沙四上亚段, 沉积相, 滩坝, 控制因素

Abstract:

In recent years, the research of the Shanghe area is based on a large range of regional background, and the research of the refinement of the Upper Shahejie Formation (4th Member) in Shanghe area is relatively scarce.Based on core logging data, we analyzed the types and characteristics of sedimentary microfacies in the Upper Shahejie Formation (4th Member) in Shanghe area.The planar distribution and control factors of sedimentary microfacies in each period are analyzed based on system tract.The results show that the Upper Shahejie Formation (4th Member) in Shanghe area is mainly located in a littoral and shallow lacustrine sedimentary environment, and there are mainly two sedimentary facies types (i.e., wind-wave beach bar and storm beach bar).The sedimentary structure includes mainly wave-like sand lamination and wave-like bedding reflecting wind and wave action, and cross-bedding of mounds and depressions reflecting storm action.The logging curves comprise four types: tooth funnel, low amplitude tooth, middle-high amplitude finger and box.The lowstand systems tract of the Upper Shahejie Formation (4th Member) is dominated by a lakeside sedimentary environment, where wind-wave beach bar is mainly developed, while two types of beach bar are developed in the transgressive systems tract and the highland systems tract.The beach bars are controlled by the paleosource, the paleobathymetry and the paleogeomorphology, especially during periods of lake transgression and high elevation, wind-wave beach bar is developed in the low uplift area in the northwest of Shanghe area.Meanwhile, storm beach bars are developed in the deep low-lying area in the southeast of Shanghe area.

Key words: Shanghe Area, Upper Shahejie Formation (4th Member), sedimentary facies, beach bar, control factor

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