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| 滨里海盆地东缘石炭系碳酸盐岩储层主要成岩作用及控制因素分析 | |
| 引用本文： | 赵中平,牟小清,陈丽.滨里海盆地东缘石炭系碳酸盐岩储层主要成岩作用及控制因素分析[J].现代地质,2009,23(5). |
| 作者姓名： | 赵中平 牟小清 陈丽 |
| 作者单位： | 1. 中国地质大学,能源学院,北京,100083 2. 中国石化西南石油工程有限公司,井下作业分公司,四川,德阳,618000 3. 中国地质大学,地球物理与信息技术学院,北京,100083 |
| 摘 要： | 滨里海盆地是世界上特大型含油气盆地之一,盆地东缘石炭系碳酸盐岩储层是良好的油气储层。通过对肯基亚克油田和扎纳若尔中区块油田石炭系碳酸盐岩储层的主要成岩作用和储层控制因素的分析,指出混合白云岩化作用是研究区最主要的、也是最普遍的白云岩成因类型,其形成的白云岩是最有利的储层。白云岩化作用与沉积环境密切相关,白云岩的分布对沉积微相展布具有一定的指示意义。由于沉积环境和相带不同,孔隙水的流动性存在一定的差异,因而成岩作用在不同的相带对孔隙的发育与演化的影响也表现出一定的差异。沉积作用是控制储层的决定因素,平面上的成岩作用差异与沉积微相相关;距石炭系顶部不整合面愈近,则后期有利的成岩作用和构造作用对储层的改造更为彻底。滨里海盆地东缘石炭系顶部碳酸盐岩储层是最具潜力的油气储层,有望进一步发现更多的油气储量。 |
| 关 键 词： | 白云岩化 成岩作用 控制因素 滨里海盆地 |
Analysis on Main Diagenesises and Controlling Factors of Carboniferous Carbonate Reservoirs in the Eastern Margin of Pre-Caspian Basin |
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| ZHAO Zhong-ping,MOU Xiao-qing,CHEN Li.Analysis on Main Diagenesises and Controlling Factors of Carboniferous Carbonate Reservoirs in the Eastern Margin of Pre-Caspian Basin[J].Geoscience——Journal of Graduate School,China University of Geosciences,2009,23(5). | |
| Authors: | ZHAO Zhong-ping MOU Xiao-qing CHEN Li |
| Abstract: | The Pre-Caspian basin is one of the largest oil and gas bearing basins in the world, and the Carboniferous Carbonate reservoirs in the eastern margin are favorable hydrocarbon reservoirs. Based on study of main diagenesises and controlling factors of Carboniferous carbonate reservoirs of Kenjiyak and the central block of Zananor oil field, the paper showed that the dorag dolomitization is one of the most important and common genetic types of dolomite, and dolomite formed by dorag dolomitization is the most favorable reservoir. Dolomitization is closely related to the sedimentary environment, and to some degree, the distribution of dolomite may be regarded as an indicator for microfacies. The mobility of the pore water is different in each depositional environment and facies zone, so diagenesis has different influence on the development and evolution of porosity in each facies zone. Sedimentation is the determinative factor which affects the quality of reservoir and different diagenesises is in connection with the distribution of sedimentary microfacies. The closer to the Carboniferous unconformity surface, the more favorable diagenesis and tectonizations will take place. As a result, the upper Carboniferous carbonate reservoir of the margin of the Pre-Caspian basin is the most promising hydrocarbon reservoir and it is expected to find more oil and gas reserves there. |
| Keywords: | dolomization diagenesis controlling factor Pre-Caspian basin |
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