| 肖明宏,张号,张雷,胡磊,沈宝存,吕星,杨健,谈红梅.湖北咸丰地区五峰组—龙马溪组页岩气成藏条件分析[J].矿产勘查,2024,15(S2):43-55 |
| 湖北咸丰地区五峰组—龙马溪组页岩气成藏条件分析 |
| Analysis of shale gas reservoir formation conditions from Wufeng Formation to Longmaxi Formation in Xianfeng District，Hubei Province |
| 投稿时间：2024-06-24 |
| DOI：10.20008/j.kckc.2024s2007 |
| 中文关键词: 页岩气 五峰组 —龙马溪组 成藏条件 资源潜力 湖北省 |
| 英文关键词: shale gas Wufeng Formation Longmaxi Formation accumulation conditions resource potential Hubei Province |
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| 中文摘要: |
| 五峰组 —龙马溪组是鄂西南地区重要的海相页岩气层系之一，对五峰组 —龙马溪组页岩气的成藏条件分析，有利于该地区的预测资源潜力评价。本文根据已有的露头调查及区内施工钻孔资料，对区内五峰组—龙马溪组的储层特征进行了分析研究，并且评价了该地区页岩气的资源潜力。结果表明鄂西咸丰地区五峰组 —龙马溪组根据岩性组合等特征可划分为碳硅质岩、观音桥段和碳质页岩段。鄂西咸丰地区东北部富有机质页岩主要发育于深水陆棚相带内。页岩气显示较好的地区集中分布于咸丰地区东北部，区内五峰组 —龙马溪组页岩厚度大， TOC含量高，主要为硅质类页岩，成藏物质基础较好，分析表明区域有效的顶底板封堵性和与川东地区相近热演化程度，是五峰组 —龙马溪组页岩气能够富集成藏的关键因素。 |
| 英文摘要: |
| The Wufeng Longmaxi Formation is one of the important marine shale gas reservoirs insouthwestern Hubei Province. Analyzing the reservoir conditions of the Wufeng Longmaxi Formation shale gas is beneficial for predicting the resource potential evaluation of the region. Based on existing outcrop surveys and drill.ing data in the area，the reservoir characteristics of the Wufeng Formation Longmaxi Formation were analyzed and studied，and the resource potential of shale gas in the region was evaluated. The results indicate that the WufengLongmaxi Formation in the Xianfeng area of western Hubei can be divided into carbonaceous siliceous rocks， Guanyinqiao Formation，and carbonaceous shale Formation based on their lithological composition and othercharacteristics. The organic rich shale in the northeast of Xianfeng area in western Hubei mainly develops in thedeep-water shelf facies zone. The areas with good shale gas display are concentrated in the northeast of Xianfeng area. The shale thickness and TOC content of the Wufeng Longmaxi Formation in the area are large，mainly composed of siliceous shale，with a good material basis for reservoir formation. Analysis shows that the effectivesealing properties of the top and bottom plates in the region and the similar degree of thermal evolution to theeastern Sichuan area are the key factors for the enrichment and accumulation of shale gas in the Wufeng LongmaxiFormation. |
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