| 塔里木盆地塔中地区奥陶系古岩溶包裹体特征及古环境意义 |
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| 引用本文： | 张庆玉,李景瑞,梁彬,淡永,曹建文.塔里木盆地塔中地区奥陶系古岩溶包裹体特征及古环境意义[J].中国岩溶,2020,39(6):894-899. |
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| 作者姓名： | 张庆玉 李景瑞 梁彬 淡永 曹建文 |
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| 作者单位： | 中国地质科学院岩溶地质研究所/自然资源部、广西岩溶动力学重点实验室 |
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| 基金项目： | 国家重点研发计划课题（2018YFC0604301）；广西自然科学基金（2017GXNSFAA198208）；国家自然科学基金（41302122）；中国地质调查局项目（DD20190562、DD20190723、DD20190342） |
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| 摘 要： | 碳酸盐岩古岩溶型储层是油气勘探开发的重点领域，具有极强的非均质性，是世界级难题。古岩溶发育期次的确定一直都是古岩溶储层地质建模的技术难题。现有判别古岩溶发育期次的方法多以地表裸露古岩溶充填物特征为依据。在塔里木盆地塔中地区地质构造复杂，具有多期次古岩溶作用的叠加改造。本次利用古岩溶充填方解石流体包裹体均一温度法，研究塔中地区奥陶系碳酸盐岩古岩溶作用期次与古环境条件，揭示了4期古岩溶作用环境:加里东期古岩溶作用、海西晚期古岩溶作用、印支-燕山期古岩溶作用、喜马拉雅期古岩溶作用。该研究成果对后期岩溶储层预测具有重要意义。
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| 关 键 词： | 流体包裹体 古岩溶期次 古环境 碳酸盐岩 塔里木盆地 |
Characteristics and paleoenvironmental significance of Ordovician karst inclusions in the Tazhong area ,Tarim basin |
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| ZHANG Qingyu,LI Jingrui,LIANG Bin,DAN Yong,CAO Jianwen.Characteristics and paleoenvironmental significance of Ordovician karst inclusions in the Tazhong area ,Tarim basin[J].Carsologica Sinica,2020,39(6):894-899. |
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| Authors: | ZHANG Qingyu LI Jingrui LIANG Bin DAN Yong CAO Jianwen |
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| Institution: | Institute of Karst Geology, CAGS / Key Laboratory of Karst Dynamics, MNR & GZAR |
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| Abstract: | Carbonate rock paleokarst-type reservoirs in carbonate rock are a key field of oil and gas exploration and development， which have strong heterogeneity， remaining a difficult problem throughout the world. In this aspect， the determination of palaeokarst periods is always a technical barrier in geological modeling of the palaeokarst reservoirs. At present， the methods to distinguish the development periods of ancient karst are mainly based on the characteristics of exposed ancient karst fillings. The geological structure in the Tazhong area， Tarim basin is complex， with multiple-period superimposed reformation of palaeokarstification. This work uses the honogenization temperature method on fluid inclusions filled in calcite of ancient karst to study the periods and environment of ancient karst in Ordovician carbonate rock of the Tazhong area. Four periods of ancient karstification are revealed， i.e. Caledonian， late Hercynian， Indosinian to Yanshanian and Himalayan times.The research results are of great significances to the prediction of karst reservoirs in the future. |
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