| 松辽盆地齐家—古龙凹陷中浅层烃源岩生烃量评价 |
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| 引用本文： | 陈方文,卢双舫,丁雪.松辽盆地齐家—古龙凹陷中浅层烃源岩生烃量评价[J].沉积学报,2014,32(6):1181-1187. |
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| 作者姓名： | 陈方文 卢双舫 丁雪 |
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| 作者单位： | 中国石油大学(华东)非常规油气与新能源研究院 山东青岛 266580 |
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| 基金项目： | 国家自然科学基金项目(批准号:41302101,41330313);中央高校基本科研业务费专项资金(编号:2472014CX02089A)联合资助 |
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| 摘 要： | 随着近年来齐家—古龙凹陷中浅层烃源岩层段岩芯分析资料的积累和丰富,有必要再次对其烃源岩和生烃量开展评价.通过对齐家—古龙凹陷中浅层烃源岩岩芯样品的地球化学特征分析、测试结果进行统计,以低成熟度烃源岩样品的高温热模拟实验为基础,利用化学动力学方法计算齐家—古龙凹陷中浅层烃源岩成烃转化率随深度的变化规律,定量评价其生烃量.研究结果表明:齐家—古龙凹陷中浅层烃源岩有机质丰度高、类型好、处于未成熟至成熟的热演化阶段,生烃门限大约为1 500 m,约在1 750 m开始大量生烃;齐家—古龙凹陷青一段、青二三段和嫩一段烃源岩以生油为主,生油量分别为195.95×108 t、241.79×108 t和134.77×108 t,生气量分别为36.89×1011 m3、17.64×1011 m3和4.02×1011 m3,齐家—古龙凹陷中浅层油、气资源量分别为(28.63~57.25) ×108 t和(0.29~0.59) ×1011 m3.
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| 关 键 词： | 松辽盆地 齐家—古龙凹陷 中浅层 烃源岩 生烃量 |
| 收稿时间： | 2013-09-16 |
Evaluation on Hydrocarbon-generation Amount of Middle-shallow Source Rocks of Qijia-Gulong Depression in Songliao Basin |
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| Institution: | Institute of Unconventional Hydrocarbon and New Energy Sources, China University of Petroleum, Qingdao, Shandong 266580 |
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| Abstract: | In recent years, the analysis on core samples from the middle-shallow source rocks in Qijia-Gulong Depression of Songliao Basin are getting more and more, it's necessary to re-evaluate the hydrocarbon-generation amount of the middle-shallow source rocks. The geochemical characteristics of core samples from the middle-shallow source rocks in Qijia-Gulong Depression were collected and analyzed. The hydrocarbon generated transformation ratio with depth of the middle-shallow source rocks in Qijia-Gulong Depression was calculated using the chemical kinetics method, which is based on the high temperature thermal simulation of low maturity source rock samples. Then the hydrocarbon-generation amount was evaluated quantitatively. The results show that: the middle-shallow source rocks in Qijia-Gulong Depression of Songliao Basin are extremely rich in organic matter. The organic matter types of them are good. And the thermal evolution stage of them is from immature to mature. The hydrocarbon generation threshold depth of the middle-shallow source rocks is about 1 500 m, and the depth of beginning to quickly generate hydrocarbon is about 1 750 m. The middle-shallow source rocks of the first member of Qingshankou formation (K1qn1), the second and third member of Qingshankou formation (K1qn2+3) and the first member of Nenjiang formation (K1n1) are mainly generated oil associated with a small amount of gas. The amounts of oil generated from them are 195.95×108 t, 241.79×108 t and 134.77×108 t. The amounts of gas generated from them are 36.89×1011 m3, 17.64×1011 m3 and 4.02×1011 m3, respectively. The oil and gas resource are (28.63~57.25) ×108 t and (0.29~0.59) ×1011 m3 in middle-shallow strata of Qijia-Gulong depression in Songliao Basin. |
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