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Accumulation conditions of outside source heavy oil in NepaBotuoba Sub-basin,Russia and prediction of distribution

Accumulation conditions of outside source heavy oil in NepaBotuoba Sub-basin,Russia and prediction of distribution
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摘要 In terms of tectonic evolution and petroleum geological conditions of the Nepa-Botuoba Sub-basin and its adjacent su4b-basins,the accumulation conditions of the heavy oil were analyzed. The studied area had plenty of oil and gas accumulation,but there were no developed source rocks. It is a typical outside source accumulation,whose origins from thick high-quality source rock deposited in the adjacent sub-basins. The shallow layer has favorable heavy oil reservoir conditions and poor sealing conditions,which benefits the thickening of hydrocarbon. The multi-periods of structural compression not only uplifted the studied area drastically,but also created a series of fault zones and large-scale slope belt. The structural compression also provided channel and sufficient power for migration of hydrocarbon to shallow layers. Based on these conditions,the favorable accumulation zone of heavy oil was predicted,which provided direction for heavy oil exploration in Nepa-Botuoba Subbasin. In terms of tectonic evolution and petroleum geological conditions of the Nepa-Botuoba Sub-basin and its adjacent sub-basins,the accumulation conditions of the heavy oil were analyzed. The studied area had plenty of oil and gas accumulation,but there were no developed source rocks. It is a typical outside source accumulation,whose origins from thick high-quality source rock deposited in the adjacent sub-basins. The shallow layer has favorable heavy oil reservoir conditions and poor sealing conditions,which benefits the thickening of hydrocarbon. The multi-periods of structural compression not only uplifted the studied area drastically,but also created a series of fault zones and large-scale slope belt. The structural compression also provided channel and sufficient power for migration of hydrocarbon to shallow layers. Based on these conditions,the favorable accumulation zone of heavy oil was predicted,which provided direction for heavy oil exploration in Nepa-Botuoba Subbasin.
作者 XU Jianhua SHAN Xuanlong DU Shang HE Wentong LIANG Ye XU Jianhua;SHAN Xuanlong;DU Shang;HE Wentong;LIANG Ye(College of Earth Sciences,Jilin University)
出处 《Global Geology》 2016年第3期125-132,共8页 世界地质(英文版)
基金 National Science and Technology Major Project(2011ZX05028-002) The Science and Technology Major Project of PetroChina Company Limited(2012E-0501)
关键词 hydrocarbon favorable reservoir shallow migration rock tectonic uplift petroleum thick 盆地构造演化 稠油油藏 油藏条件 分布预测 俄罗斯 油气地质条件 成藏条件 油气运移
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