| 准噶尔盆地西泉地区石炭系火山岩有利储层主控因素研究 |
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| 引用本文： | 马尚伟,陈春勇,罗静兰,魏丽,刘勇,代静静,汪冲.准噶尔盆地西泉地区石炭系火山岩有利储层主控因素研究[J].高校地质学报,2019,25(2):197. |
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| 作者姓名： | 马尚伟 陈春勇 罗静兰 魏丽 刘勇 代静静 汪冲 |
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| 作者单位： | 西北大学大陆动力学国家重点实验室,西安,710069;中国石油新疆油田公司准东采油厂,阜康,831500;陕西省地质调查规划研究中心,西安,710068 |
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| 摘 要： | 准噶尔盆地东部西泉地区石炭系火山岩储层分布受多种因素的控制。通过岩心观察、铸体薄片、物性分析，结合成
像测井及试油资料，对西泉地区石炭系火山岩的孔隙分布特征、主控因素及孔隙演化进行了综合研究。结果表明，石炭系
火山岩的物性高值区主要分布在距石炭系不整合面之下0~50 m、70~115 m 及130~155 m 区域内，有利储层的分布受火山岩
的岩性、风化淋滤作用和构造作用的控制。岩性对储集性能的影响取决于火山岩的喷发强度及岩相类型、岩石的矿物成分
和结构构造以及力学性质；风化淋滤作用主要控制了不整合面之下0~50 m 范围内安山岩和英安岩次生孔隙及有利储层的形
成；构造运动产生的裂缝对不整合之下70~115 m、130~155 m 区域内的火山角砾岩有利储层的形成起主要控制作用。火山
岩储集空间的形成与演化主要经历了同生成岩阶段、表生成岩阶段和埋藏成岩阶段，不同成岩阶段对孔隙的演化具有不同
的影响。
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| 关 键 词： | 孔隙类型及分布特征 孔隙演化 主控因素 火山岩储层 西泉地区 准噶尔盆地 |
Research of Major Controlling Factors on Favorable Reservoir of the Carboniferous Volcanic Rocks in Xiquan Area,Junggar Basin |
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| MA Shangwei,CHEN Chunyong,LUO Jinglan,WEI li,LIU Yong,DAI Jingjing,WANG Chong.Research of Major Controlling Factors on Favorable Reservoir of the Carboniferous Volcanic Rocks in Xiquan Area,Junggar Basin[J].Geological Journal of China Universities,2019,25(2):197. |
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| Authors: | MA Shangwei CHEN Chunyong LUO Jinglan WEI li LIU Yong DAI Jingjing WANG Chong |
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| Abstract: | The distribution of the Carboniferous volcanic reservoir is controlled by many factors in Xiquan area, east Junggar Basin.
Comprehensive research on the pore distribution characteristics, major controlling factors and pore evolution of volcanic rocks was
conducted by analysis of core observation, casting thin sections, physical properties, integrated with the imaging logging and oil test
data. The result shows that high value area of physical properties mainly distributes at 3 intervals under the top of the Carboniferous
unconformity: 0-50 m, 70-115 m, 130-155 m, and the distribution of favorable reservoirs are controlled by lithology of volcanic rock,
weathering and leaching, and tectonic activities. The influence of lithology on reservoir performances depends on the volcanic eruption
intensity and lithofacies types of volcanic rocks, and mineral compositions, textures, and mechanical property of rocks. The factors of
weathering and leaching mainly controlled the formation of secondary pores of andesite and dacite and favorable reservoirs under the
unconformity surface of 0-50 m. Fractures generated by tectonic activities played a major role in controlling the formation of volcanic
breccia favorable reservoirs under the unconformity surface between depths of 70-115 m and 130-155 m. Formation and evolution of
volcanic reserving pores includes 3 stages: syndiagenetic stage, epidiagenetic stage and burial diagenetic stage，different diagenetic
stages have different effects on pore evolution. |
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| Keywords: | pore types and distribution characteristics pore evolution the major controlling factors volcanic reservoir Xiquan area Junggar Basin |
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