low coal rank meaning in Chinese
低煤阶
Examples
- Forming differences between high and low coal rank coalbed methane reservoirs
我国高低煤阶煤层气成藏的差异性 - The differences between high and low coal rank reservoirs are analyzed from such aspects as the conditions of the coalbed methane ' s fountain , the coalbed adsorption capacity , the hydrogeologic and physical property of coal beds , and the reservoir forming process
摘要从煤层气成藏的气源条件、煤层的储集能力、煤层的物性、煤层的水文地质条件和成藏过程等方面，分析了高煤阶煤层气和低煤阶煤层气成藏的差异性。 - Advanced instrument and testing techniques including adopting mercury injection apparatus , specific surface analyses apparatus , porosity - permeability measurement apparatus , isothermal adsorption instrument and drill core flow experiment system , etc . , are also adopted . on the basis of study on gas zoning , known cbm show and its component , generating mechanism of low coal rank cbm are discussed . the author pointed out that generated cbm should consist of primary biogenic methane gas in lignite stage , thermogenic methane gas in long - flame coal to gas / fat coal stage , and deuterogenic biogenic methane gas in coal seam imbedded stage
在本区瓦斯分带、已知煤层气显示及其组分研究基础上，探讨了低煤级煤层气的生成机制，指出生成的煤层气应包括褐煤阶段的原生生物甲烷气、长焰煤?气肥煤阶段的热成因甲烷气和煤层埋藏阶段的次生生物甲烷气三种成因甲烷气体；进而论述了煤储层含气饱和度、临界解吸压力、临储压力比、地解压差等甲烷解吸特征，实测与理论含气量、煤层气资源量与资源丰度等煤储层含气性特征。 - Multi - hierarchical , multimeans , comprehensive and deepened research on the macrofractures , microfractures system and pores system features , capacity of cbm storage and osmosis , adsorption characteristic , as well as physical properties of surrounding rocks of coal reservoirs have been made . furthermore , classifying standard and identifying characteristics for fractures - pores system of low coal rank coal reservoirs in zhungaer basin has been put forward as well . in this process , some routine instrument are used , such as viewing coal mine scene and hand specimen , observing polished section and surface which are made from lump coal and powder coal samples , observing and image analyses under the common microscope ' s transmitted light , reflection light and fluorescence
通过矿井现场、镜下观察统计等常规手段，采用多种先进仪器和测试技术展开对煤储层的裂隙系统与孔隙系统发育特征、储渗性能、吸附特性及煤储层围岩物性特征的多层次、多手段分析，并综合室内外观测及前人成果，提出了煤储层裂隙与孔隙系统的划分标准与识别特征，分别从宏微观尺度、定性与定量层次对裂隙与孔隙系统特征及其与煤储层储渗性能关系的研究。