Basic petroleum geological conditions in Nepal and its implications for hydrocarbon exploration
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摘要:
尼泊尔境内地质条件复杂，油气勘探程度和投入及油气地质认识程度很低，但其低喜马拉雅带及以南地区具丰富的油气显示。为了进一步探讨尼泊尔山前带的油气勘探潜力，结合前人研究成果及新认识，对尼泊尔低喜马拉雅带及以南的区域油气地质特征进行了梳理、总结与分析。结果表明，尼泊尔低喜马拉雅带及以南发育多套潜在的规模性烃源岩，具有潜在的生、储、盖组合；新构造运动是控制区域性油气运移与调整成藏的关键；丰富的地表油气显示及静态石油地质条件预示着尼泊尔低喜马拉雅带及以南，尤其是MBT以南具有良好的油气远景与勘探潜力。
Abstract:Nepal has complex geological conditions, low degree of hydrocarbon exploration and investment, and low degree of understanding about the petroleum geology.But there are abundant surface and borings shows of hydrocarbon in Lesser Himalaya and its south.In order to understand the hydrocarbon potential of the mountain front in Nepal, the authors intend to combine the previous and the new research results to summarize and analyze the petroleum geological characteristics in the Lesser Himalaya of Nepal and its south.The results show that there are many large scale potential layers as source rocks in Lesser Himalaya of Nepal and its south, and there are also a assemblages formed by potential source rocks, reservoirs and cap rocks.Neotectonic movement is the key to control the regional migration and the adjustment of hydrocarbon.Both of the abundant hydrocarbon shows and the static petroleum geological conditions indicate that Nepal's Lesser Himalaya and the south, especially south of MBT, have good prospects for hydrocarbon exploration.
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Key words:
- Nepal /
- petroleum geology /
- source rock /
- hydrocarbon potential /
- Himalaya /
- neotectonics
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图 1 尼泊尔及邻区大地构造位置(a) (据Dhital, 2015)、尼泊尔地质简图(b)和南北向横跨尼泊尔地质构造剖面图(c) (据Subed et al., 2012)
Figure 1.
表 1 尼泊尔低喜马拉雅带及以南综合地层
Table 1. Comprehensive stratigraphic table in the Lesser Himalayas and the south of Nepal
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