| 古老碳酸盐岩层系油气储层地质特征 |
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| 引用本文： | 刘伟,孟庆阳,张光亚,张磊.古老碳酸盐岩层系油气储层地质特征[J].海相油气地质,2010,15(1):15-20. |
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| 作者姓名： | 刘伟 孟庆阳 张光亚 张磊 |
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| 作者单位： | 中国石油勘探开发研究院 |
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| 摘 要： | 对研究程度较高的北美奥陶系碳酸盐岩油气田特征参数作了统计和分析,对比中国下古生界碳酸盐岩油气田,分析了古老碳酸盐岩油气储层的特点及主要控制因素。北美大陆奥陶纪沉积环境以环潮坪—浅水陆棚为主,储集岩可简单地划分为四种岩相类型,包括泥晶灰岩、粒泥灰岩、泥粒灰岩以及颗粒灰岩。晶间孔、角砾岩相关孔隙及溶蚀孔隙是最主要的孔隙类型,其中尤以晶间孔最为普遍。中国下古生界碳酸盐岩油气储层的演化更为复杂,原生孔隙损失殆尽。北美和中国的研究都表明,岩溶储层和白云岩储层是主要的有效储层。当埋深超过3000m时,白云岩是主要的储层岩石类型。在埋深增大的情况下白云岩保持更好的储集性能,这是一个基本的趋势。中国下古生界碳酸盐岩埋深较大,所以白云岩储层是一个特别值得关注的领域。
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| 关 键 词： | 下古生界 碳酸盐岩油气田 碳酸盐岩储集层 北美地区 中国 |
Geologic Characteristics of Oil and Gas Reservoirs in Old Lower Paleozoic and Sinian Carbonate Rocks |
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| Liu Wei,Meng Qingyang,Zhang Guangya,Zhang Lei.Geologic Characteristics of Oil and Gas Reservoirs in Old Lower Paleozoic and Sinian Carbonate Rocks[J].Marine Origin Petroleum Geology,2010,15(1):15-20. |
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| Authors: | Liu Wei Meng Qingyang Zhang Guangya Zhang Lei |
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| Abstract: | Correlated with statistics and analysis of the characteristic parameters from eight Ordovician carbonate reservoirs in eight oil and gas fields in north American, the features and the main controlling factors of the Lower Paleozoic and Sinian carbonate reservoirs from some oil and gas fields in China are studied. In North American, the Ordovician sedimentary environments mostly were circular tide flats to shallow shelves and the carbonate reservoirs can be briefly divide into four types of lithofacies, including mudstone,wackestone, packstone and grainstone, in which intercrystal pores, pores related with breccia and dissolved pores are common while in China, the evolution of Lower Paleozoic and Sinian carbonate reservoirs are more complicated and primary pores are mostly damaged out. The both results of reservoir analysis to North American and China have shown that both of kast reservoirs and dolostone reservoirs are all effective ones. When burial depth are more than 3000m, dolostone is the dominant type of reservoir rock. As increasing depth, dolostone can keep good reservoir capability, which is a elementary trend. The Lower Paleozoic and Sinian carbonate rock are commonly greatly deep-buried in many basins in China so that the dolostone reservoirs are a domain worthy to pay an attention especially. |
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| Keywords: | Lower Paleozoic Carbonate reservoir Carbonate field Dolostone North American China |
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