| 松辽盆地长岭断陷火山岩储层对天然气成藏的控制作用 |
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| 引用本文： | 刘哲,单玄龙,衣健,代登亮.松辽盆地长岭断陷火山岩储层对天然气成藏的控制作用[J].世界地质,2017,36(3):880-888. |
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| 作者姓名： | 刘哲 单玄龙 衣健 代登亮 |
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| 作者单位： | 1. 吉林大学地球科学学院, 长春 130061;2. 吉林省地质调查院, 长春 130051 |
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| 基金项目： | 国家自然科学基金项目（41430322）. |
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| 摘 要： | 火山岩气藏是松辽盆地长岭断陷深层重要的气藏类型。通过钻井岩芯、扫描电镜、孔渗测试及面孔率分析等资料,详细研究了火山岩储层的类型和特征;并结合地震资料和产能数据刻画了火山岩储层和气藏的空间分布特征,探索了不同类型火山岩储层对天然气成藏的控制作用。研究表明,研究区主要发育有气孔流纹岩储层、流纹质凝灰熔岩储层和块状流纹岩储层3种类型。气孔流纹岩储层以原生孔隙和微裂缝为主,属于较高-高孔,低渗-较高渗储层;流纹质凝灰熔岩储层主要发育脱玻化孔和构造裂缝,为中孔-特低渗储层;块状流纹岩储层储集空间以裂缝为主,属于特低孔-特低渗储层。气孔流纹岩型气藏的特点是多层工业气层纵向和横向叠加形成,气井产能高,含气面积大;流纹质凝灰熔岩型气藏的特点是块状气藏的气井产能中等;块状流纹岩型气藏的特点是块状气藏,气井产能小,需压裂后方能达到工业产能。
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| 关 键 词： | 松辽盆地 长岭断陷 天然气成藏 火山岩储层 控制作用 |
| 收稿时间： | 2017-03-28 |
| 修稿时间： | 2017-04-14 |
Controlling effects on gas accumulation of volcanic reservoirs of Changling fault depression in Songliao Basin |
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| LIU Zhe,SHAN Xuan-long,YI Jian,DAI Deng-liang.Controlling effects on gas accumulation of volcanic reservoirs of Changling fault depression in Songliao Basin[J].World Geology,2017,36(3):880-888. |
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| Authors: | LIU Zhe SHAN Xuan-long YI Jian DAI Deng-liang |
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| Institution: | 1. College of Earth Sciences, Jilin University, Changchun 130061, China;2. Jilin Institute of Geological Survey, Changchun 130051, China |
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| Abstract: | Volcanic gas reservoir is the important deep gas reservoir type of Changling fault depression in Songliao Basin. Based on the drilling core, SEM, porosity-permeability test and the analysis of plane porosity, the authors studied the types and characteristics of volcanic rock reservoirs, depicted the spatial distribution characteristics of volcanic rock reservoirs and gas accumulation by seismic data and production data, and explored the controlling effects of different volcanic rock reservoirs on gas accumulation. The results show that the study area mainly developed three types of volcanic rock reservoirs:porous rhyolite, rhyolitic tuff lava and blocky rhyolite reservoirs. The porous rhyolite reservoir is mainly with primary porosity and micro fractures, belonging to higher-highest porosity and low-higher permeability reservoir. The rhyolite tuff lava reservoir mainly developed devitrified pore and structural fractures, belonging to medium porosity and very low permeability reservoir. The blocky rhyolite reservoir mainly developed fractures, belonging to very low porosity and very low permeability reservoir. The porous rhyolite reservoir is characterized by superposition of commercial gas reservoirs vertically and horizontally, forming large reservoir with high production rate. The rhyolite tuff lava reservoir is blocky gas reservoir with moderate gas production. The rhyolite reservoir has blocky gas reservoir and lower production rate, and can only reach commercial production after fracturing. |
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| Keywords: | Songliao Basin Changling fault depression gas accumulation volcanic rock reservoir controlling effects |
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