收稿日期: 2003-12-29
修回日期: 2004-01-16
网络出版日期: 2004-04-20
基金资助
国家自然科学基金项目(编号:40072043),国家重点基 础研究发展规划项目(编号:G1999043308),中国科学院知识创新工程重要方向性项目(编号 :KZCX2-110),国家“九五”科技攻关项目(编号:99-110-01-03)的联合资助.
THE CHARACTERISTICS OF FLUID INCLUSION AND ITS POOL-FORMING SIGNIFICANCE OF NA TURAL GAS FROM ORDOVICIAN CARBONATE RESERVIORS IN CENTRAL ORDOS BASIN
Received date: 2003-12-29
Revised date: 2004-01-16
Online published: 2004-04-20
流体包裹体分析是研究油气运移和成藏期次等问题的一种非常有效的方法。在系统地观测了鄂尔多斯盆地中部奥陶系碳酸盐岩储层中流体包裹体的类型、分布特征、均一温度、冰点、盐度及单个包裹体成分的基础上,探讨了该盆地中部气区奥陶系风化壳天然气的成藏期次和运移方向。研究表明,在鄂尔多斯盆地中部奥陶系碳酸盐岩储层中,流体包裹体的类型和特征比较复杂,有机包裹体占5%~80%,包裹体均一温度为70~180℃,冰点为-1.0~-13.5℃,盐度多大于5.0wt.%,密度为0.922~1.065g/cm3。认为鄂尔多斯盆地中部气区天然气主要成藏期至少有两个,即晚三叠世末和早白垩世末;这两期天然气的运移方向总体上是由东向西、由南向北。
李贤庆,胡国艺,李剑,熊波,米敬奎,唐友军 . 鄂尔多斯盆地中部奥陶系碳酸盐岩储层流体包裹体特征及对天然气成藏的意义[J]. 天然气地球科学, 2004 , 15(2) : 120 -124 . DOI: 10.11764/j.issn.1672-1926.2004.02.120
The analysis of fluid inclusion is a very effective method in studying oil and gas migration and the pool-forming time. The authors were systemically carried out an investigation of the type, the distribution characte ristics, homogenization temperature, freezing point, salinity and the compositio n of fluid inclusions in Ordovician carbonate reservoirs in central Ordos basin in this paper. The pool-forming time and migration direction of natural gas fr om Ordovician weathered crust gas reservoirs were also discussed. The type and c haracteristics of fluid inclusions in Ordovician carbonate reservoirs are relati ve complex in central Ordos basin. There are about 5%~80% organic inclusion con tent, 70~180℃ homogenization temperature, -1.0~-13.5℃ freezing point, more t han 5.0wt.% salinity, and 0.922~1.065 density in Ordovician carbonate reservoir s in central Ordos basin. It is suggested that there would have been at least tw o stages for the formation of natural gas pools in central Ordos basin, which th e main pool-forming time was probably the end of late Triassic period and the e nd of the early Cretaceous period. Natural gas at the two stages generally migra ted from east to west and from south to north.
[1 ] Mclimans P K. The application of fluid inclusions to migrat ion of oil and diagenesis in petroleum reservoirs [J ]. Applied Geoche mistry, 1987, (2): 585-603.
[2 ] 施继锡,李本超,傅家谟,等.有机包裹体及其与油气的关系 [J ].中国科学 (B),1987,3(3):318-325.
[3 ] 卢焕章,李秉伦,沈昆,等.包裹体地球化学 [M ].北京:地质出版社,1990 :6-16.
[4 ] Karlsen D A, Nedkvitne T, Larter S R, et al. Hydrocarbon compos ition of authogenic inclusions: application to elucidution of petroleum reservoi r filling history [J ]. Geochim. Cosmochim.Acta, 1993, 57: 3641-3659.
[5 ] 刘德汉.包裹体研究——盆地流体追踪的有力工具 [J ].地学前缘,1995,2( 3-4):149-154.
[6 ] 肖贤明,刘德汉,刘祖发,等.应用储层流体包裹体信息研究天然气气藏的成 藏时间 [J ].科学通报,2002,47(12):957-960.
[7 ] 长庆油田石油地质志编写组.中国石油地质志(卷十二,长庆油田) [M ].北 京:石油工业出版社,1992.
[8 ] 杨俊杰,裴锡古.中国天然气地质学(卷四) [M ].北京:石油工业出版社,19 96.
[9 ] 戴金星,王庭斌,宋岩,等.中国大中型天然气田形成条件与分布规律 [M ]. 北京:地质出版社,1997.
[10 ] 李贤庆,侯读杰,胡国艺,等.鄂尔多斯盆地中部地区下古生界碳酸盐岩生烃潜力探讨 [J ].矿物岩石地球化学通报,2002,21(3):152-157.
[11 ] 李贤庆,胡国艺,李剑,等.鄂尔多斯盆地中部气田天然气混源的地球化学标志与评价 [J ].地球化学,2003,32(3):282-290.
[12 ] Li Xianqing, Hou Dujie, Tang Youjun, et al. Molecular geochemical evidence for the origin of natural gas from dissolved hydrocarbon in Ord ovician Formation waters in Central Ordos Basin [J ]. Chinese Journal of Geochem istry, 2003, 22(3): 193-202.
[13 ] 刘德良,谈迎,孙先如,等.鄂尔多斯盆地古生界流体包裹体特征及其与油气演化关系 [J ].沉积学报,2002,20(4):697-703
[14 ] 杨池银.千米桥潜山凝析气藏成藏期次研究 [J ].天然气地球科学,2003,14(3): 181-185.
[15 ] 冯子辉,任延广,王成,等.松辽盆地深层火山岩储层包裹体及天然气成藏期研究 [J ].天然气地球科学,2003,14(6):436-442.
[16 ] 覃建雄矿物包裹体研究在油气评价和预测中的应用 [J ].天然气地球科学,1993 ,4(1):24-30.
[17 ] 汪本善.基于流体包裹体研究剖析鄂尔多斯盆地油气运移特征 [A ].程克明.碳酸 盐岩油气生成理论与实践 [C ].北京:石油工业出版社,1996.241-272.
[18 ] 胡国艺.鄂尔多斯盆地奥陶系天然气成藏机理及其与构造演化关系 [D ]. 广州: 中国科学院广州地球化学研究所,2003:63-71.
[19 ] 李剑,胡国艺,谢增业,等.中国大中型气田天然气成藏物理化学模拟研究 [M ]. 北京:石油工业出版社,2001:108-109.
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