高级检索

陕西省上古生界煤成气资源成藏规律研究

Study on reservoir formation law of Upper Paleozoic coal-derived gasresources in Shaanxi Province

  • 摘要: 基于鄂尔多斯盆地煤成气开发理论与经验,为摸清陕西省煤成气赋存规律及有利区域,研究了陕西省上古生界烃源岩特征、煤成气成分和生储盖等条件,分析了陕西及周边成熟煤成气田勘探区的研究成果。结果表明:陕西省上古生界烃源岩厚度大,显微煤岩组分以镜质组、半镜质组和惰质组为主,烃源岩变质程度较高,生储盖条件较好,具备大量生烃的条件。将烃源岩厚度、镜质组最大反射率Ro,max、生气强度、埋藏深度等作为判断陕西省煤成气藏开发潜力的经验参数,指出志丹—子长一线以南至黄陵以北的区域具有发现较好的煤成气藏的潜力。

     

    Abstract: Based on the development theory and experiences of the coal-derived gas in Ordos Basin,in order to find out the reservoir formation law and favorable regions of the coal-derived gas in Shaanxi Province,a study was conducted on the features of the Upper Paleozoic hydrocarbon resource rocks in Shaanxi Province,the coalbed methane composition and the reservoir cover as well as other conditions and an analysis was conducted on the study achievements of the mature coal-derived gas exploration areas in Shaanxi Province and the surrounding regions.The results showed that the Upper Paleozoic hydrocarbon resource rocks in Shaanxi Province was high in thickness and the macerals were mainly the vitrinite,semi-vitrinite and inertinite.The metamorphic degree of the hydrocarbon resource rocks was high,the reservoir cover condition was good and the condition could have high hydrocarbon generation condition.The thickness of the hydrocarbon resource rock,methane generation intensity,deposition depth and others would be the experiment indexes to judge the development potential of the coal-derived gas in Shaanxi Province.The paper pointed out that the region from the south along the Zhidan-Zichang Line to the north of Huangling would have a good potential of the coal-derived gas reservoir.

     

/

返回文章
返回