| 柴达木盆地北缘地区油气储层中流体包裹体特征及成藏期研究 |
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| 引用本文： | 仰云峰,李贤庆,董鹏,彭德华,陈琰,韩秦鹏.柴达木盆地北缘地区油气储层中流体包裹体特征及成藏期研究[J].地球化学,2009,38(6):591-599. |
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| 作者姓名： | 仰云峰 李贤庆 董鹏 彭德华 陈琰 韩秦鹏 |
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| 作者单位： | 1. 中国矿业大学,煤炭资源与安全开采国家重点实验室,北京,100083;中国矿业大学,地球科学与测绘工程学院,北京,100083
2. 中国石油,青海油田分公司,勘探开发研究院,甘肃,敦煌,736202 |
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| 基金项目： | 教育部新世纪优秀人才支持计划(NCET-06-0204);;国家自然科学基金(40572085);;有机地球化学国家重点实验室开放基金(OGL-200403);;中国石油青海油田分公司科研项目(QHKT/JL-03-013) |
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| 摘 要： | 根据流体包裹体的透射光和荧光镜下观察、包裹体均一温度及含油包裹体丰度（GOI）分析，对柴达木盆地北缘（柴北缘）地区南八仙、马北1号构造古近系、新近系油气储层样品中流体包裹体特征及油气成藏期进行了研究。柴北缘地区流体包裹体较为发育，存在盐水溶液包裹体和有机包裹体，主要分布在石英裂隙、次生加大边及胶结物中，但个体一般较小，主要为5～10μm。含油包裹体丰度GOI值较低，绝大多数样品GOI值分布在2．0％～10．5％之间，约40％样品的GOI值超过5％。包裹体均—温度在不同油气储层样品中差异较大，说明这些包裹体可能是在不同时期形成的。依据包裹体均—温度的实测结果，结合沉积埋藏-热演化史的资料，认为柴北缘地区南八仙构造和马北1号构造均经历了两期油气充注成藏，前者油气充注时间为N1-N2^1沉积期、N2^2-N2^3沉积期，后者油气充注时间为N1沉积期、N1末-N2沉积期。
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| 关 键 词： | 油气储层 流体包裹体 均一温度 含油包裹体丰度 成藏期次 |
Fluid inclusion characteristics of oil and gas reservoirs in the northern Qaidam Basin and implications for petroleum accumulation |
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| YANG Yun-feng,LI Xian-qing,DONG Peng,PENG De-hua,CHEN Yan,HAN Qin-peng.Fluid inclusion characteristics of oil and gas reservoirs in the northern Qaidam Basin and implications for petroleum accumulation[J].Geochimica,2009,38(6):591-599. |
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| Authors: | YANG Yun-feng LI Xian-qing DONG Peng PENG De-hua CHEN Yan HAN Qin-peng |
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| Institution: | China University of Mining and Technology |
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| Abstract: | Based on the fluid inclusion study(microscopy characteristics,homogenization temperatures and grains with oil inclusions),the pool-forming times of Nanbaxian and Mabei 1 oilfields,north Qaidam Basin,have been discussed in this paper.Fluid inclusions in northern Qaidam Basin are relatively abundant,including saline aqueous inclusion and organic inclusion.These inclusions are small(5-10μm),mainly distribute in quartz fractures.overgrowths and cementations.The abundances of grains with oil inclusions(GOI)are commonly low,mostly ranging between 2.0%-10.5%with about 40 percent samples over 5%.The homogenization temperatures of fluid inclusons in different samples are markedly vailable.which indicates that these inclusions formed in different periods.According to the measured homogenization temperatures of fluid inclusions and combined with burial evolution history,Nanbaxian and Mabei 1 oilfields experienced two pool-forming times,N_1-N_2~1 and N_2~2-N_2~3,and N1 and N_1 end-N_2,respectively. |
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| Keywords: | oil and gas reservoir fluid inclusion homogenization temperature grain with oil inclusions(GOI) pool-forming time |
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