西北地区中下侏罗统煤成烃源岩评价

• 作 者: 刘光祥 潘文蕾 邵海宁
• 机 构: 中国石化无锡实验地质研究所!江苏无锡214151,中国石化无锡实验地质研究所!江苏无锡214151,中国石化合肥石油化探研究所!安徽合肥230022
• 出 处: 石油实验地质
• 发表日期: 2000年03期
• 关键词: 西北地区 有机显微组分 生烃潜力 有机地化特征

西北地区中、下侏罗统煤层广布 ,厚度较大 ;根据对煤的有机显微组分测试及综合统计分析表明 ,在西北地区 ,煤岩尽管并不普遍具备高含量的壳质组 ,但其高含量的富氢基质镜质体却具有普遍规律 ,富氢基质镜质体的含量占有机显微组分达 18%以上 ,具备了煤成烃的物质基础。另外 ,本文提出了煤的有机地化参数类比系数法 ,并对煤生烃潜力进行了评价。结果表明 ,西北地区主要盆地煤具有较好 -好的生烃能力。煤成烃具有广阔的勘探前景

In the northwest area, the Lower Jurassic coal seam is widely distributed and has a large thickness. Based on the organic micro-component test and comprehensive statistical analysis of coal, it is shown that coal and rock, though not generally rich in high content of crustal mass in the northwest, However, the high content of hydrogen-rich matrix vitrinite has a common law, the hydrogen-rich matrix vitrinite content of organic micro-components accounted for more than 18%, with the material basis of hydrocarbon generation. In addition, this paper proposes the method of analogical coefficient of coal organic geochemical parameters, and evaluates the potential of coal hydrocarbon generation. The results show that coal in the main basins in the northwestern China has better-good hydrocarbon generation capacity. Coal formation has broad exploration prospects