开平向斜海陆过渡相煤系气成藏特征及勘探方向

李澎; 李正; 张爱印; 张健雅

doi:10.3969/j.issn.1006-6535.2025.03.003

特种油气藏 >

2025 , Vol. 32 >Issue 3: 16 - 25

DOI: https://doi.org/10.3969/j.issn.1006-6535.2025.03.003

地质勘探

开平向斜海陆过渡相煤系气成藏特征及勘探方向

李澎 ,
李正 ,
张爱印 ,
张健雅

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1.河北省煤田地质勘查院,河北邢台 054000;
2.河北省非常规天然气勘查研究中心,河北邢台 054000;
3.李澎创新工作室,河北邢台 054000

李澎(1986—),男,高级工程师,2009年毕业于华北水利水电学院地质工程专业,2013年毕业于中国地质大学(武汉)地质工程专业,获硕士学位,现主要从事非常规天然气勘探开发工作。

收稿日期: 2024-08-01

修回日期: 2025-02-18

网络出版日期: 2025-07-08

基金资助

河北省“三三三人才工程”资助项目“河北省开平向斜煤系气叠置成藏过程与富集模式研究”(C20221057);河北省煤田地质局公共财政专项资金“开平向斜煤系地层综合气资源潜力调查评价”(13000021MY3U4MEAG7BO9)

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Accumulation characteristics and exploration directions of coal-measure gas in the marine-continental transitional facies of the Kaiping Syncline

LI Peng ,
LI Zheng ,
ZHANG Aiyin ,
ZHANG Jianya

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1. Hebei Coalfield Geological Survey Institute,Xingtai,Hebei 054000,China;
2. Hebei Unconventional Natural Gas Exploration and Research Center,Xingtai,Hebei 054000,China;
3. Li Peng Innovation Studio,Xingtai,Hebei 054000,China

Received date: 2024-08-01

Revised date: 2025-02-18

Online published: 2025-07-08

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摘要

开平向斜是河北省煤系非常规天然气最具勘探价值的潜力区块之一,但由于对开平向斜成藏地质条件及成藏模式缺乏系统性研究,制约了该区煤系气的勘探开发进程。为此,通过对测试数据进行分析,并结合“三史”模拟等手段,综合分析该区的成藏地质条件、成藏演化过程和成藏模式,同时对该区有利勘探方向进行了分析。结果表明:研究区具备煤系气成藏的地质条件;早三叠世、中侏罗世—晚白垩世是煤系气全方位高效成藏时期;研究区主要发育西北翼构造-岩性-水文封闭成藏模式、核部岩性封闭成藏模式以及东南翼地层-岩性封闭成藏模式;开平向斜西北翼为下一步勘探开发的最有利区域。研究结果对开平向斜煤系气的后续勘探开发具有一定指导意义。

关键词： 煤系气; 成藏地质; 成藏演化; 成藏模式; 海陆过渡相; 开平向斜

本文引用格式

李澎 , 李正 , 张爱印 , 张健雅 . 开平向斜海陆过渡相煤系气成藏特征及勘探方向[J]. 特种油气藏, 2025 , 32(3) : 16 -25 . DOI: 10.3969/j.issn.1006-6535.2025.03.003

Abstract

The Kaiping Syncline is one of the potential blocks with the most exploration value of coal-measure unconventional natural gas in Hebei Province, but the lack of systematic research on the accumulation geological conditions and the accumulation mode of the Kaiping Syncline restricts the exploration and development process of coal-measure gas in this area. In this regard, through the analysis of test data and the combination of the "three histories (burial history, thermal history, and organic matter maturation history)" simulation and other means, the geological conditions, evolutionary process and mode of accumulation in this area were comprehensively analyzed, and the favorable exploration direction of this area was also analyzed. The results show that The study area has the geological conditions for coal-measure gas accumulation; the Early Triassic and Middle Jurassic-Late Cretaceous are the periods of all-round and efficient accumulation for coal-measure gas; the study area is predominantly characterized by the northwest-wing structural-lithological-hydrological sealing gas accumulation mode, the core lithological sealing gas accumulation mode, and the southeast-wing stratigraphic-lithological sealing gas accumulation mode; and the northwestern wing of Kaiping Syncline is the most favorable area for the next step of exploration and development. The study results are of some significance for the subsequent exploration and development of coal-measure gas in the Kaiping Syncline.

Key words： coal-measure gas; geology of accumulation; evolution of accumulation; accumulation mode; marine-continental transitional facies; Kaiping Syncline

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