| 库车凹陷克拉2气田深层优质储层成因及成岩作用模式 |
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| 引用本文： | 刘建清,赖兴运,于炳松,陈晓林,隋成.库车凹陷克拉2气田深层优质储层成因及成岩作用模式[J].沉积学报,2005,23(3):412-419. |
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| 作者姓名： | 刘建清 赖兴运 于炳松 陈晓林 隋成 |
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| 作者单位： | 1.中国地质大学地球科学与资源学院,北京 100083; |
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| 基金项目： | 国家重点基础研究发展计划(973计划) |
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| 摘 要： | 基于成岩作用的影响因素及库车盆地的实际,深入研究了克拉2气田次生孔隙发育段储层岩石成分特征及早期古气候条件下胶结物对于成岩作用及次生孔隙的影响,分析了地层压力系统中超高压带、构造裂缝、自生矿物分带的成因、作用、特点及其与储层物性、成岩环境的相关关系,评价了储层中长石、方解石的溶解,白云石对方解石的交代,压实、胶结等主要成岩作用类型对次生孔隙的具体影响和贡献,认为该区早期碱性成岩环境下方解石胶结物的溶解是形成该区次生孔隙发育带的主导因素,并根据该区自生矿物流体包裹体及埋藏史特征,建立了该区成岩作用及孔隙演化的模式。
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| 关 键 词： | 次生孔隙 方解石溶解 白垩系 库车盆地 |
| 文章编号： | 1000-0550（2005）03-0412-08 |
| 收稿时间： | 2004-08-09 |
| 修稿时间： | 2004-11-11 |
The Origin of the Deep-burial High-quality Reservoir and the Model of Diagenetic Evolution in Kela 2 Gas Field, Kuqua Depression |
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| LIU Jian-qing,LAI Xing-yun,YU Bing-song,CHEN Xiao-lin,SUI Cheng.The Origin of the Deep-burial High-quality Reservoir and the Model of Diagenetic Evolution in Kela 2 Gas Field, Kuqua Depression[J].Acta Sedimentologica Sinica,2005,23(3):412-419. |
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| Authors: | LIU Jian-qing LAI Xing-yun YU Bing-song CHEN Xiao-lin SUI Cheng |
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| Institution: | 1.China University of Geosciences, Beijing 100083;2.Chengdu Institute of Geology and Mineral Resources, Chengdu 610082 |
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| Abstract: | Based on the influencing factors of diagenesis and the reality in Kuqua depression, in this paper, the research on the origin of the secondary porosity has been performed for the deep-buried high quality reservoir. The mineral and rock fragment components of the sandstone carbonate cement formed under the past climate and their effects on the secondary porosity have been described. The overpressure, crevice, authigenic mineral assemblage and their origins, characters, effects on the diagenetic environment and secondary porosity have measured to evaluate the feldspar and calcite dissolution condition, the replacement of dolomite to calcite, the effects of compaction and cementation of the sandstone and so on. Lots of information suggests that the dissolution of calcite cement be responsible for the porosity abnormity at deep depth. Furthermore, on the basis of the study of fluid inclusion and all the works mentioned above, we established the model of diagenesis and porosity evolution in this area. |
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| Keywords: | secondary porosity calcite dissolution Cretaceous Kuqua depression |
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