页岩沉积层中无机氮转化为有机氮的化学机理与氮同位素演化

项目名称： 页岩沉积层中无机氮转化为有机氮的化学机理与氮同位素演化

项目编号： No.41472095

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 天文学、地球科学

项目作者： 丁康乐

作者单位： 长江大学

项目金额： 87万元

中文摘要： 基于地质体中有机氮化物成因的复杂性与探索新的页岩油气富集判识指标的必要性，从事化学研究领域的工作者，对非常规油气地学领域遇到的化学问题进行跨学科研究。在接近地质条件下（储层温度、地层压力、沉积水介质等）对页岩沉积层中的无机氮、有机质以及某些矿物进行热模拟实验。利用化学反应的基本原理，研究页岩沉积层中无机氮转化为有机氮的可能性、主要控制因素与氮同位素演化特征，探讨无机氮转化为有机氮过程中的反应机理、反应动力学以及氮同位素演化与页岩油气生成之间的内在联系，从有机-无机相互作用的角度对页岩沉积层中有机氮的成因提出新认识，为高-过成熟页岩烃源岩油气富集判识提供新的研究思路。

中文关键词： 有机氮化物成因；页岩油气；热模拟实验；氮同位素演化；反应机理

英文摘要： In consideration of the complexity of the formation mechanism of organic nitrogen compounds in geologic settings and the necessity of exploring new identifying indices of shale oil and gas accumulation, the related chemists try to conduct interdisciplinary research of chemistry problems derived from unconventional oil and gas geology. Thermal simulation experiments close to the geological conditions (e.g. reservoir temperature, formation pressure, sedimentary water medium, etc.) are planned to be carried out using inorganic nitrogen compounds, organic matter and some minerals derived from shale sediments. Possibilities, major control factors and nitrogen isotope evolution of the conversion of inorganic nitrogen to organic nitrogen in shale sediments are tentatively discussed according to the basic principles of chemical reactions. Reaction mechanism, reaction kinetics and internal relations between nitrogen isotopic evolution and shale oil and gas formations during the conversion of inorganic nitrogen to organic nitrogen in shale sediments are intended to be investigated from the perspective of organic-inorganic interactions, presenting new insights into the origin of organic nitrogen compounds in shale sediments and new research approach for the discrimination of hydrocarbon enrichment in high- to over-mature shale source rocks.

英文关键词： formation mechanism of organic nitrogen compounds;shale oil and gas;thermal simulation experiments;nitrogen isotope evolution;reaction mechanism