The humic source gas is heavier than the sapropelic source gas in the carbon isotope. The methane carbon isotope will become heavier if the Carboniferous source gas is mixed. The C 2 /C 3 index in the ...

针对煤层气开采中煤岩微观力学特性不明的问题，研究人员通过X射线衍射、拉曼光谱和纳米压痕技术，首次系统研究了腐殖煤与腐泥煤及其显微组分（镜质体、惰质体、藻类体）的断裂韧性（Kc）、脆性指数（B）及蠕变参数（E1、η2、n等），发现惰质体力学性能最优且抗蠕变能力最强，藻类体则易 ...

The maceral composition of coal-rock kerogen is predominantly of humic type, with a small amount of sapropelic type. The carbon isotopes of methane (δ 13 C 1) values range from −37.60 to −16.00‰, with ...