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莺-琼盆地高温高压环境及油气运移机制 被引量:24
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作者 张启明 胡忠良 《中国海上油气(地质)》 1992年第1期1-9,共9页
莺-琼盆地快速沉降和沉积的地质背景,导致盆地具高温高压的特征。高温高压环境是盆地内油气生成、运移和聚集的重要地质因素,高温高压油气水以间歇式混相运移方式进行。当“深部高温高压包”增压到接近或超过上覆地层负荷压力时,地... 莺-琼盆地快速沉降和沉积的地质背景,导致盆地具高温高压的特征。高温高压环境是盆地内油气生成、运移和聚集的重要地质因素,高温高压油气水以间歇式混相运移方式进行。当“深部高温高压包”增压到接近或超过上覆地层负荷压力时,地压流体(油气水)突发性地沿①号大断层上升,并在断层附近聚集成藏,形成了崖13-1气田。 展开更多
关键词 莺-琼盆地 高温高压环境 油气运移机制 间歇式混相运移 高温高压包
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Mechanism of petroleum migration and accumulation in western China's superposed basins 被引量:2
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作者 Kang Yonghong Li Peijun +2 位作者 Qi Xuefeng Wen Yonghong Li Shuijing 《International Journal of Mining Science and Technology》 2012年第2期267-271,共5页
In western China, most petroliferous basins are superposed due to their multi-periodic tectonic evolution, and the mechanisms of petroleum migration and accumulation are so complex that much more sophis- ticated metho... In western China, most petroliferous basins are superposed due to their multi-periodic tectonic evolution, and the mechanisms of petroleum migration and accumulation are so complex that much more sophis- ticated methodologies are necessary for depiction of these mechanisms and identification of petroleum occurrences. For this purpose, in this article, a new methodology was formulated which includes: (I) ver- tical identification of petroleum migration and accumulation fluid dynamic systems in the superposed basins; (2) analysis of the effect of large scale regional faults and fault combinations on the fluids exchange between the vertically identified different systems; (3) analysis of petroleum migration and accumulation in each vertically identified system, and establishment of appropriate geological model of petroleum migration and accumulation for each vertically identified system. Using this methodology, the satisfactory results obtained in the Lunnan Uplift of Tarim Basin and Ludong Uplift of Jungar Basin case studies are: (1) existence of different vertical fluid dynamic systems in western China's superposed basins which are very necessary for understanding the mechanism of petroleum migration and accumu- lation; (2) in deep system, long-distance lateral petroleum migration and accumulation mainly take place along the long time exposed unconformity with weathered, fractured or karst reservoir rocks; (3) regio- nal faults are the main conducts for fluids migration from deep system up to middle and/or upper sys- tems. As to middle and/or upper systems, regional faults play a role of "petroleum source". Small faults within middle and/or upper systems conduct petroleum to carrier beds with less impeding force; (4) petroleum migrated from deep system vertically up to middle and/or upper systems will migrate lat- erally in carrier beds of these systems and accumulate to form nools near or far from faults. 展开更多
关键词 Superposed basinsFluid dynamic systemsGeological model of petroleum migrationand accumulation
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