页岩油气富集的主控因素及误辩:以美国、阿根廷和中国典型页岩为例

发布时间：2018-09-18 20:48

【摘要】：页岩气富集不均匀,无论对于不同页岩油气藏还是同一页岩油气藏不同地方,产量都是有高有低.有必要系统分析和对比全球不同页岩油气的地质、石油系统与油气富集的关系,总结页岩油气富集的主控因素,从而采取合理的勘探和开发技术.以美国、阿根廷和中国典型页岩为例,基于野外和岩心观察、样品属性测试分析、储层表征、石油系统分析及油气测试,探究了页岩油气富集的主控因素及存在的认识误区.结果表明,富含有机质和脆性矿物的页岩主要分布于远离造山带物源的非深水的沉积和构造背景,富含石英和高伽马页岩并非判断优质储层的矿物和岩石物理标准,优质碳酸盐页岩应以富含碳酸盐和低伽马值为标准."页岩油气藏"实际是细粒富含有机质的自生自储或与富含有机质烃源岩相邻的贫有机质细粒沉积储层.天然裂缝对页岩油气富集具有有利和不利的双重作用.因此,页岩油气富集同时受到沉积和构造环境、岩相及矿物组成、天然裂缝的耦合影响,且对不同沉积盆地、不同属性页岩的影响差异明显.
[Abstract]:The accumulation of shale gas is uneven and the output is high and low for different shale reservoirs or different places of the same shale reservoirs. It is necessary to systematically analyze and compare the geology of different shale oil and gas, the relationship between petroleum system and oil and gas enrichment, summarize the main controlling factors of shale oil and gas enrichment, and adopt reasonable exploration and development techniques. Taking typical shale in USA, Argentina and China as an example, based on field and core observation, sample attribute test, reservoir characterization, petroleum system analysis and oil and gas testing, the main controlling factors and existing misunderstanding of shale oil and gas enrichment are explored. The results show that the shale rich in organic matter and brittle minerals is mainly distributed in the non-deep-water sedimentary and tectonic setting far from the source of the orogenic belt, and the rich quartz and high-gamma shale are not the mineral and petrophysical criteria to judge the high quality reservoirs. High quality carbonate shale should be based on rich carbonate and low gamma values. " Shale oil and gas reservoir "is actually a fine grain rich in organic matter in situ self-reservoir or adjacent to the source rocks rich in organic matter fine grain sedimentary reservoir." Natural fractures have both favorable and unfavorable effects on shale oil and gas enrichment. Therefore, the accumulation of shale oil and gas is influenced by sedimentary and tectonic environment, lithofacies and mineral composition, coupling of natural fractures, and the influence of shale on different sedimentary basins is obvious.
【作者单位】：犹他大学能源与地球科学学院;中国地质大学资源学院;中国石油大学非常规天然气研究院;中国石油大学非常规油气与新能源研究院;
【基金】：国家科技重大专项(Nos.2017ZX05035-002,2016ZX05061) 国家自然科学基金项目(No.41472112)
【分类号】：P618.13

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