Origin of Condensate Oil/Gas Reservoir: A Case Study in Qijia-Gulong Depression of Songliao Basin
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摘要: 为了阐明齐家-古龙凹陷所发现的凝析油气藏的成因, 结合研究区凝析油气藏所处的地质背景、油油对比认识, 设计进行了原油的热蒸发模拟实验.结果表明, 区内凝析油与下伏的黑油同源, 这暗示了其次生成因; 实验室热蒸发模拟实验支持上部的凝析油为下部黑油的热蒸发作用所产生.这种热蒸发作用可能是通过断层或微裂缝实现的.热蒸发成因将使区内形成大规模的凝析气藏的可能性减小, 勘探的有利目标应该在有利于蒸发作用发生的通道、但目前埋深仍然较大、温压较高的地区.Abstract: In order to elucidate the origin of condensate oil-gas reservoir discovered in Qijia-Gulong depression, a thermal evaporation experiment was designed and carried out based on the knowledge of the geological background of condensate oil-gas reservoir and the oil-oil correlation.The result indicates that the condensate oil and the underlying black-oil are from the same source rock, which hints their secondary origin. The thermal evaporation experiment supports that the condensate oil is from the underlying black-oil by thermal evaporation. This kind of thermal evaporation is possibly realized through faults or micro-fractures. The possibility of forming large-scale condensation gas reservoirs in this area is discounted because of the thermal evaporation origin. Therefore, the advantaged exploration target should be focused on such areas as where there are pathways propitious to thermal evaporation, with deeper bury depth and higher temperature and pressure.
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Key words:
- condensate oil /
- condensate gas /
- thermal evaporation /
- Qijia-Gulong depression /
- simulation experiment
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图 1 英51井不同油层正构烷烃含量对比
Fig. 1. n-alkane distribution correlation of different reservoirs in well Ying 51
图 2 英51井不同油层正构烷烃单体烃碳同位素对比
Fig. 2. Correlation of single hydrocarbon carbon isotope of n-alkane for different reservoirs in well Ying 51
图 3 英51井不同油层色谱指纹对比
Fig. 3. GC fingerprint correlation of different reservoirs in well Ying 51
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[1] Chen, Y. C., Yang, Y. C., 1997. Discrimination of condensate gas reservoir and its favourable area in Gulong sag, Songliao basin. Xinjiang Petroleum Geology, 18(4): 313-318 (in Chinese with English abstract). [2] Hou, D. J., Zhu, J. Z., Tang, Y. J., et al., 2005. Evaluating fault sealing using geochemical techniques. Earth Science—Journal of China University of Geosciences, 30(1): 97-101 (in Chinese with English abstract). [3] Huang, R. C., Wang, T. G., Wang, T. D., et al., 1997. Formation and distribution of immature oil and condensate oil in China. Petroleum Industry Press, Beijing, 165-169 (in Chinese). [4] Kaufman, R. L., Ahmed, A. S., Hempkins, W. B., 1987. A new technique for the analysis of commingled oils and its application to production allocation calculations. 16th Annual Indonesian Petroleum Assoc. Paper IPA 87-23/21, Djakarta. [5] Li, S. M., Pang, X. Q., Qiu, G. Q., et al., 2005. Origin and significance of the Ordovician oil from well WG 1, Dongying depression, Bohai bay basin. Earth Science—Journal of China University of Geosciences, 30(4): 451-458 (in Chinese with English abstract). https://www.researchgate.net/publication/290013285_Origin_and_significance_of_the_Ordovician_oil_from_well_WG_1_Dongying_depression_Bohai_Bay_basin [6] Li, Y. J., Chen, Y. C., 1997. Genesis of oil and gas and distribution of gas condensate reservoirs in Putaohua formation in Gulong area, Songliao basin. Jour. of Southwest-China Petroleum Institute, 19(3): 14-19 (in Chinese with English abstract). [7] Shen, J. N., Lu, S. F., Li, J. K., et al., 2005. Analyzing the phase state genesis of condensate gas by use of relative volatility—By taking the Gulong sag in Songliao basin as an example. Natural Gas Industry, 25(9): 3-7 (in Chinese with English abstract). [8] Thompson, K. F. M., 1987. Fractionated aromatic petroleum and the generation of gas condensates. Org. Geochem. , 11(6): 573-590. doi: 10.1016/0146-6380(87)90011-8 [9] Xu, Y. X., 1989. Analysis of oil-gas formatiom & its characteristics in Gu-109 well. Petroleum Geology & Oilfield Development in Daqing, 8(4): 29-35 (in Chinese with English abstract). [10] Zhou, X. X., Liu, G. D., Li, S. J., 1998. Natural gas formation condition and distribution pattern in Tarim basin. Petroleum Industry Press, Beijing, 127-130 (in Chinese). [11] 陈义才, 杨远聪, 1997. 松辽盆地古龙凹陷凝析气藏判断及分布. 新疆石油地质, 18(4): 313-318. https://www.cnki.com.cn/Article/CJFDTOTAL-XJSD199704003.htm [12] 侯读杰, 朱俊章, 唐友军, 等, 2005. 应用地球化学方法评价断层的封闭性. 地球科学——中国地质大学学报, 30(1): 97-101. https://www.cnki.com.cn/Article/CJFDTOTAL-DQKX200501013.htm [13] 黄汝昌, 王铁冠, 王廷栋, 等, 1997. 中国低熟油及凝析油形成与分布规律. 北京: 石油工业出版社: 165-169. [14] 李素梅, 庞雄奇, 邱贵强, 等, 2005. 王古1井奥陶系油气成因及其意义. 地球科学——中国地质大学学报, 30(4): 451-458. https://www.cnki.com.cn/Article/CJFDTOTAL-DQKX200504009.htm [15] 李延均, 陈义才, 1997. 松辽盆地古龙地区葡萄花油层油气成因与凝析气藏形成分布. 西南石油学院学报, 19(3): 14-19. https://www.cnki.com.cn/Article/CJFDTOTAL-XNSY703.002.htm [16] 申家年, 卢双舫, 李景坤, 等, 2005. 用相对挥发度探讨凝析气的相态成因—以松辽盆地古龙凹陷为例. 天然气工业, 25(9): 3-7. https://www.cnki.com.cn/Article/CJFDTOTAL-TRQG200509001.htm [17] 许运新, 1989. 古109井凝析气藏油气特征及其形成条件分析. 大庆石油地质与开发, 8(4): 29-35. https://www.cnki.com.cn/Article/CJFDTOTAL-DQSK198904004.htm [18] 周兴熙, 柳广弟, 李绍基, 1998. 塔里木盆地天然形成条件及分布规律. 北京: 石油工业出版社: 127-130. -
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