| 河南省太行山东麓深部晚古生代层序地层及其含气系统划分 |
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| 引用本文： | 罗洪浩,孙平昌,吴会永,王德伟,石志衍,陈俊侠.河南省太行山东麓深部晚古生代层序地层及其含气系统划分[J].吉林大学学报(地球科学版),2022,52(5):1718-1734. |
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| 作者姓名： | 罗洪浩 孙平昌 吴会永 王德伟 石志衍 陈俊侠 |
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| 作者单位： | 1.河南省煤炭地质勘察研究总院，郑州4500002.吉林大学地球科学学院，长春130061 |
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| 摘 要： | 为了开展河南省太行山东麓深部晚生代的厚层暗色泥岩和煤层方面的系统研究。本文以晚古生代地层为研究对象，运用沉积学和层序地层学的方法，对研究区的上古生界太原组、山西组和下石盒子组进行精细地层对比及沉积相划分。研究结果显示：共识别出5种岩石类型和16种岩相类型，5种沉积相、10种沉积亚相类型，并识别出3种层序界面，2种关键性体系域界面，划分了10个三级层序及对应的体系域；由此建立该地区煤系地层层序地层格架，恢复等时地层格架内的岩相古地理特征，分析其沉积演化史，并建立了两种典型的沉积模式。在此基础上，结合气测录井资料，在层序地层格架内对隔水阻气层位和含气系统进行了识别和划分，揭示了煤层含气量的垂向分布特征和层序结构对含气系统的封闭性特征，完成了晚古生代煤系地层的含气系统划分，其中I类含气系统2个，位于太原组层序2和山西组层序4中。
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| 关 键 词： | 河南省 太行山东麓 晚古生代 层序地层 沉积相 聚煤规律 含气系统 |
| 收稿时间： | 2022-03-07 |
Late Paleozoic Sequence Stratigraphy and Coal
Accumulation in the Deep Part of Eastern Foot of Taihang Mountains,Henan
Province |
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| Luo Honghao,Sun Pingchang,Wu Huiyong,Wang Dewei,Shi Zhiyan,Chen Junxia.Late Paleozoic Sequence Stratigraphy and Coal
Accumulation in the Deep Part of Eastern Foot of Taihang Mountains,Henan
Province[J].Journal of Jilin Unviersity:Earth Science Edition,2022,52(5):1718-1734. |
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| Authors: | Luo Honghao Sun Pingchang Wu Huiyong Wang Dewei Shi Zhiyan Chen Junxia |
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| Institution: | 1.
Henan Province General Research Institute of Coal Geology Exploration,
Zhengzhou 450000, China2.College of Earth Sciences，Jilin University，Changchun 130061，China |
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| Abstract: | In order to conduct a systematic study of
thick dark mudstone and coal seams in the deep Late Paleozoic strata at the
eastern foot of Taihang Mountains, Henan Province, taking the Late Paleozoic
strata as the research object and using methods of sedimentology and sequence
stratigraphy, the high resolution stratigraphic correlation and sedimentary
facies division of the Upper Paleozoic Taiyuan Formation, Shanxi Formation and
Xiashihezi Formation in the study area were carried out. A total of 5 rock
types, 16 lithofacies types, 5 sedimentary facies and 10 sedimentary subfacies
are identified. Three sequence boundaries and two key system tract boundaries
were further identified, and 10 third-order sequences and corresponding system
tracts were divided. Therefore, the sequence stratigraphic framework of coal
measures strata in this area were established, the lithofacies paleogeographic
characteristics in the isochronous stratigraphic framework were established,
and its sedimentary evolution history was analyzed. It further defines the
horizontal and vertical spatial distribution, evolution characteristics and the
response relationship with the structure of each group of sedimentary facies,
revealed that the sedimentation has a control relationship with all kinds of
reservoirs, and established two typical coal accumulation models. On this
basis, combined with gas logging data, the water and gas barriers and gas
bearing systems are identified and divided within the sequence stratigraphic
framework, the vertical distribution characteristics of coal seam gas content
and the sealing characteristics of sequence structure on gas bearing systems
are revealed, and the division of gas bearing systems of Late Paleozoic Coal
measures are completed. There are two gas-bearing systems about Class I in
sequence 2 of Taiyuan Formation and sequence 4 of Shanxi Formation. |
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| Keywords: | Henan Province Late Paleozoic Taihang Mountains sequence stratigraphy sedimentary facies principles of coal accumulation gas-bearing system |
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