| 深部碳酸盐岩油气生成和保存的特征及其模拟实验研究 |
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| 引用本文： | 范善发,周中毅.深部碳酸盐岩油气生成和保存的特征及其模拟实验研究[J].沉积学报,1997,15(2):114-117. |
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| 作者姓名： | 范善发 周中毅 |
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| 作者单位： | 中国科学院广州地球化学研究所 广州 510640 |
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| 摘 要： | 塔里木盆地具有地温梯度低和油气藏埋藏深度大的特点，深埋引起的高压利于油藏保存，7000ｍ的地层温度＜１６５℃，低于通常认为石油形成温度上限，油藏保存的深可以达到7000ｍ。铁岭灰岩高温高压模拟实验表明，高压抑制油向气转化。塔里木盆地古生界海相碳酸盐岩晚期二次生烃使生油窗延伸至Ｒｏ１.５%。
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| 关 键 词： | 深部油气生成和保存 高地层压力 晚期二次生烃 古生界碳酸盐岩 塔里木盆地 |
| 收稿时间： | 1996-09-12 |
Characteristics and Simulation Experimental Study of Generation and Conservation of Deep Carbonate Oils and Gases |
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| Institution: | Guangzhou Institute of Geochemistry Chinese Academy of Sciences Guanzhou 510640 |
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| Abstract: | The buried depth of oil and gas reservoirs is deep and over half of it is distributed in the depth of >4 500 m in the Tarim Basin. Deep burial causes high geopressure which is beneficial to the conservationof oil and gas reservoirs. The geotemperature at 7 000 m depth in the Tarim Basin is lower than 165below the lower limit of oil-generating temperature, so the conservation depth of oil and gas reservoirs can reach to 7 000 m. The Paleozoic craton basin of the Tarim Basin is characterized by the late secondary hydrocarbongeneration, which is important to the oil and gas reservoirs from the Paleozoic source rocks of the TarimBasin. TheRo> value of oil-genrating high peaks is about 1.2%and the range of the oil-generating win-low can be extended to Ro1.5% The Tieling limestone simulation experiment with high temperature and pressure demonstrated thathigh pressure is beneficial to the conservation of liquid hydrocarbons in carbonate rocks and retards the change of oil to gas. The simulation experiment also indicated that in the deeply buried condition the latesecondary hydrocarbon generation can take place in carbonate rocks because of high temperature andpressure. |
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