壳源氦气成藏问题及成藏模式

发布时间：2018-11-29 12:52

【摘要】：氦气作为一种稀有战略资源,在工业和高科技领域应用广泛。目前富氦气藏中被工业利用的氦气资源基本为壳源氦,采自天然气。氦气特殊的气源条件和物理化学性质决定其成藏过程与常规油气有着极大的差别。根据近年来在渭河盆地氦气调查工作中的一些困惑和思考,总结了氦气成藏中亟待探索的3个方面:(1)不同氦源岩的性质及氦源岩的有效性评价;(2)载体气性质及氦气赋存状态对弱源氦气运聚过程中的影响;(3)氦气直径最小,其保存的特殊性。在此基础上初步提出了氦气成藏概念模式,认为有效氦源岩、高效运移通道和合适的载体气藏是氦气成藏的关键。研究结果供业内有兴趣的同行批评指正,为寻找氦气资源提供参考和指导。
[Abstract]:As a rare strategic resource, helium is widely used in industry and high-tech fields. At present, the industrial utilization of helium in helium rich reservoirs is basically shell helium, which is derived from natural gas. The special gas source conditions and physical and chemical properties of helium determine that the accumulation process of helium is very different from that of conventional oil and gas. According to some puzzles and thoughts in the investigation of helium gas in Weihe Basin in recent years, three aspects that need to be explored in helium reservoir formation are summarized: (1) the properties of different helium source rocks and the effectiveness evaluation of helium source rocks; (2) the influence of carrier gas properties and helium storage state on the migration and accumulation of weak source helium gas, (3) the smallest diameter of helium gas and the particularity of its preservation. On this basis, the conceptual model of helium accumulation is put forward preliminarily. It is considered that effective helium source rocks, efficient migration channels and suitable carrier gas reservoirs are the key to helium accumulation. The results are useful for industry-interested peer criticism to provide reference and guidance for seeking helium resources.
【作者单位】：中国地质调查局西安地质调查中心;中国矿业大学(北京)地球科学与测绘工程学院;中国地质调查局资源评价部;
【基金】：国家自然科学基金(41572131) 中国地质调查局矿产资源调查评价项目(121201011000150014,12120113040300)
【分类号】：P618

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