Sedimentary Evolution Characteristics of Large⁃Scale Composite Tidal Channel Sandbody in the Lower Member of Taiyuan Formation in Linxing Middle Block, Ordos Basin and Their Coupling Relationship with Gas⁃Bearing Properties

Tao Zhenpeng; Zhang Bing; Mi Honggang; Du Jia; Qin Chenyang; Jiao Yangquan; Wu Liqun; Yue Liang

doi:10.3799/dqkx.2026.851

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Sedimentary Evolution Characteristics of Large⁃Scale Composite Tidal Channel Sandbody in the Lower Member of Taiyuan Formation in Linxing Middle Block, Ordos Basin and Their Coupling Relationship with Gas⁃Bearing Properties

更新时间：2026-10-15

- Sedimentary Evolution Characteristics of Large⁃Scale Composite Tidal Channel Sandbody in the Lower Member of Taiyuan Formation in Linxing Middle Block, Ordos Basin and Their Coupling Relationship with Gas⁃Bearing Properties
- Earth Science Vol. 51, Issue 9, Pages: 3599-3618(2026)
- 作者机构：
  
  1.黄冈师范学院建筑工程学院，湖北黄冈 438000
  2.中联煤层气有限责任公司，北京 100011
  3.中国地质大学（武汉）构造与油气资源教育部重点实验室，湖北武汉 430074
  4.中国地质大学（武汉）内蒙古研究院，内蒙古自治区鄂尔多斯 017010
- 作者简介：
- 基金信息：
- DOI：10.3799/dqkx.2026.851
  CLC： P618
- Received：31 May 2025，
  
  Published：30 September 2026
- 稿件说明：
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陶振鹏，张兵，米洪刚，杜佳，秦晨烊，焦养泉，吴立群，乐亮，2026.鄂尔多斯盆地东缘临兴中区太原组下段大型复合潮道砂体沉积演化特征及含气性耦合关系.地球科学，51（9）：3599-3618.

Tao Zhenpeng，Zhang Bing，Mi Honggang，Du Jia，Qin Chenyang，Jiao Yangquan，Wu Liqun，Yue Liang，2026.Sedimentary Evolution Characteristics of Large⁃Scale Composite Tidal Channel Sandbody in the Lower Member of Taiyuan Formation in Linxing Middle Block， Ordos Basin and Their Coupling Relationship with Gas⁃Bearing Properties.Earth Science，51（9）：3599-3618.
陶振鹏，张兵，米洪刚，杜佳，秦晨烊，焦养泉，吴立群，乐亮，2026.鄂尔多斯盆地东缘临兴中区太原组下段大型复合潮道砂体沉积演化特征及含气性耦合关系.地球科学，51（9）：3599-3618. DOI： 10.3799/dqkx.2026.851.

Tao Zhenpeng，Zhang Bing，Mi Honggang，Du Jia，Qin Chenyang，Jiao Yangquan，Wu Liqun，Yue Liang，2026.Sedimentary Evolution Characteristics of Large⁃Scale Composite Tidal Channel Sandbody in the Lower Member of Taiyuan Formation in Linxing Middle Block， Ordos Basin and Their Coupling Relationship with Gas⁃Bearing Properties.Earth Science，51（9）：3599-3618. DOI： 10.3799/dqkx.2026.851.

摘要

鄂尔多斯盆地东缘临兴中区太原组是煤层气与致密砂岩气协同勘探开发的核心层位.为明确该区煤系气富集规律，基于层序地层划分，结合地震、测井、岩心和露头资料，精细刻画了太原组下段大型复合潮道砂体的沉积演化特征，阐明了潮道砂体空间叠置关系及其与储层含气性的成因联系.研究结果表明：太原组下段为潮坪沉积体系，潮汐水道和砂坪为优势沉积微相，是致密砂岩气的主要储集单元；大型复合潮道砂体整体呈北厚南薄舌状、东西透镜状展布，沉积演化具有明显旋回性，遵循“奠基发展‒鼎盛发育‒衰退消亡”的垂向演变规律，且潮道砂体对下伏本溪组8+9#煤层存在强烈的冲刷作用.潮道砂体叠置型式可划分为多期叠置型、垂向叠置型、侧向叠置型和孤立型，其中多期叠置型和垂向叠置型砂体连通性优，含气性最佳，为区域优质储层.综合分析表明，沉积微相是控制含气单元与储层甜点空间分布的首要因素，砂体叠置型式为次要控制因素，而潮道砂体内部物性差异是导致储层含气性分异的本质原因.该研究成果可为临兴中区“深部煤层气和致密砂岩气”协同高效勘探开发提供重要地质依据.

Abstract

The Taiyuan Formation in the Linxing Middle Zone

eastern margin of the Ordos Basin

serves as the key layer for the collaborative exploration and development of tight sandstone gas and coalbed methane (CBM). To clarify the enrichment patterns of coal measure gas in this region

this study finely characterizes the sedimentary evolution characteristics of large tidal sand bodies in the lower section of the Taiyuan Formation

clarifying the spatial stacking relationship of tidal sand bodies and their relationship with gas-bearing genesis

on the basis of the division of sequence stratigraphy

and in combination with seismic

logging

core

and outcrop data. It is suggested that the lower section of the Taiyuan Formation is a tidal flat sedimentary system

and tidal channels and sand flats are the main reservoir types of the Taiyuan Formation gas reservoir in this area. The large tidal sand bodies are distributed in a tongue-shaped pattern with thickness greater in the north and less in the south

and in an east-west lens shape in the northern part of the study area

showing a vertical evolution law from foundation development to peak development to decline and disappearance

which has a strong scouring effect on the underlying 8+9# coal seam. The stacking types of tidal sand bodies mainly include multi-stage stacking

vertical stacking

lateral stacking

and isolated types. Among them

multi-stage and vertical stacking sand bodies have excellent connectivity

greater thickness

and better gas content

making them potential high-quality reservoirs in the area. Comprehensive analysis suggests that the primary controlling factor for the distribution of gas-bearing units is sedimentary microfacies

followed by sand body stacking styles (multi-stage and vertical stacking styles are most favorable)

while the physical conditions inside tidal channels are the essential factors resulting in differences in gas-bearing properties. The research results can provide a theoretical basis and technical support for the collaborative and efficient exploration and development of deep coalbed methane and tight sandstone gas in the Linxing Middle Block.

关键词

Keywords

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