| 准噶尔盆地红山嘴地区三叠系克下组辫状河沉积特征 |
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| 引用本文： | 王进,于兴河,仲玉芳,周明,杨新涛. 准噶尔盆地红山嘴地区三叠系克下组辫状河沉积特征[J]. 现代地质, 2021, 35(3): 841-849. DOI: 10.19657/j.geoscience.1000-8527.2021.054 |
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| 作者姓名： | 王进 于兴河 仲玉芳 周明 杨新涛 |
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| 作者单位： | 1.河北省煤田地质局新能源地质队,河北 邢台 0540002.中国地质大学(北京) 能源学院,北京 1000833.中国石油新疆油田分公司 第一采油厂,新疆 克拉玛依 834000 |
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| 摘 要： | 为阐明红山嘴地区三叠系克下组沉积相类型与特征,利用岩心、测井录井、粒度等资料,采用岩石学特征分析、岩心特征观察、岩相划分与垂向序列分析等多种手段和方法,对克下组沉积环境和沉积序列进行了深入研究。结果表明:研究区克下组以砾岩、粗砂岩及粉砂质泥岩为主,成熟度低,粒度范围大;识别出8种典型岩相,3类岩相组合;确定克下组为辫状河沉积,发育辫状河道、心滩、漫溢、泛滥平原4种沉积微相;最后,建立了该区克下组受洪流控制的近源间歇性强水动力辫状河沉积模式,为红山嘴地区克下组油气储层的研究提供借鉴。
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| 关 键 词： | 沉积特征 岩相组合 辫状河 克下组 红山嘴地区 |
| 收稿时间： | 2020-12-05 |
| 修稿时间： | 2021-02-28 |
Braided River Depositional Characteristics of the Triassic Lower Karamay Formation at Hongshanzui,Junggar Basin |
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| WANG Jin,YU Xinghe,ZHONG Yufang,ZHOU Ming,YANG Xintao. Braided River Depositional Characteristics of the Triassic Lower Karamay Formation at Hongshanzui,Junggar Basin[J]. Geoscience of Geosciences, 2021, 35(3): 841-849. DOI: 10.19657/j.geoscience.1000-8527.2021.054 |
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| Authors: | WANG Jin YU Xinghe ZHONG Yufang ZHOU Ming YANG Xintao |
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| Affiliation: | 1. New Energy Geological Team, Hebei Provincial Bureau of Coal Geology, Xingtai, Hebei 0540002. School of Energy Resources, China University of Geosciences, Beijing 100083, China3. No.1 Oil Production Plant, Xinjiang Oilfield Company, PetroChina, Karamay, Xinjiang 834000, China |
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| Abstract: | In order to unravel the sedimentary facies and characteristics of the Triassic Lower Karamay Formation in the Hongshanzui area, we integrated core and well logging, thin section, and grain-size data, and conducted various analyses on the petrological features, core sedimentary structures, lithofacies division, and vertical sequence to study the sedimentary environment and sequence. The results show that the conglomerate, coarse sandstone, and silty mudstone are the main rock types, with low maturity and large grain-size range. Eight typical lithofacies and three lithofacies assemblages were summarized. Braided river sedimentation was recognized in the Lower Karamay Formation, with its microfacies including: braided channel, mid-channel bar, overflow sand, and floodplain. Sedimentary model of the Lower Karamay Formation is featured by being source-proximal, flood-controlled with intermittent strong current. Our new model provides reference for the Lower Karamay Formation reservoir research in the district. |
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| Keywords: | depositional characteristics lithofacies assemblage braided river Lower Karamay Formation Hongshanzui area |
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