| 于奇西地区奥陶系储层裂缝充填物碳氧同位素地球化学特征 |
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| 引用本文： | 赵万飞,刘惠果,王甘露,苏杭,张峰玮,卞华鹏.于奇西地区奥陶系储层裂缝充填物碳氧同位素地球化学特征[J].贵州大学学报(自然科学版),2012,29(3):34-38,43. |
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| 作者姓名： | 赵万飞 刘惠果 王甘露 苏杭 张峰玮 卞华鹏 |
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| 作者单位： | 贵州大学资源与环境工程学院,贵州贵阳,550003 |
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| 摘 要： | 本文通过对于奇西地区8口井内的岩心裂缝充填物取样,并对样品进行裂缝充填方解石晶体和泥质的δ13C、δ18O稳定同位素测试分析,综合讨论裂缝充填物的碳、氧同位素地球化学特征。研究结果表明,部分溶蚀孔洞和裂缝方解石晶体的碳氧同位素分布接近于早期岩石的形成环境,形成较早,充填环境较封闭;大多数的构造裂隙、洞穴充填方解石晶体充填较晚,充填成岩体系环境开放;大气淡水岩溶发育可以作为于奇西地区寻找有利储层的一种指示。
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| 关 键 词： | 裂缝充填物 碳氧同位素 地球化学特征 储层 于奇西地区 |
C and O Isotope Geochemical Characteristics of Reservoir Crevice Fillings in Ordovician,Yuqi West Area |
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| ZHAO Wan-fei
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LIU Hui-guo
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WANG Gan-lu
,
SU Hang
,
ZHANG Feng-wei
,
BIAN Hua-peng.C and O Isotope Geochemical Characteristics of Reservoir Crevice Fillings in Ordovician,Yuqi West Area[J].Journal of Guizhou University(Natural Science),2012,29(3):34-38,43. |
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| Authors: | ZHAO Wan-fei LIU Hui-guo WANG Gan-lu SU Hang ZHANG Feng-wei BIAN Hua-peng |
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| Institution: | (College of Resources and Environment Engineering, Guizhou University, Guiyang 550003, China) |
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| Abstract: | In this paper,by means of core-crevice fillings,8 wells in Yuqi west Area were sampled,and δ13C、δ18O stable isotope of crevice filled calcite crystals and shale in samples were analyzed,the geochemical characteristics of C、O isotope of crevice fillings were discussed.The results show that the C and O isotope＇s distribution characteristics of calcite crystals in some corrosion hole and crevice are close to the forming environment of anterior rock,they formed early,and the filling environment is closed;calcite crystals in most structure-cranny and cave formed late,and the environment of filling diagenesis system is on-limits;the growth of atmospheric freshwater karst can be an instructions to looking for favorable reservoir in Yuqi West Area. |
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| Keywords: | crevice fillings C and O isotope geochemical characteristic reservoir Yuqi West Area |
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