CAJ | 학술논문

新一轮的全国煤层气资源评价是迄今为止评价规模最大、范围最广、资源系列最全的一次,其成果已经得到了广泛应用.为此,详细介绍了新一轮全国煤层气资源评价采用的方法,并与我国历次煤层气资源评价进行了对比.新一轮全国煤层气资源评价采用了以体积法为主的评价方法体系,以煤层含气量、可采系数、煤层气资源类别评价标准等为关键评价参数,系统评价了全国42个主要含煤层气盆地(群)、121个含气区带的煤层气资源.评价结果表明:全国埋深2 000 m以浅煤层气地质资源量为36.81×10~(12)m~3,可采资源量为10.87×10~(12)m~3;煤层气资源集中分布在鄂尔多斯、沁水、准噶尔等大型盆地,在层系,深度和地理环境的分布上具有很强的不均衡性,资源品质较好,以Ⅰ、Ⅱ类为主.
신일륜적전국매층기자원평개시흘금위지평개규모최대、범위최엄、자원계렬최전적일차,기성과이경득도료엄범응용.위차,상세개소료신일륜전국매층기자원평개채용적방법,병여아국력차매층기자원평개진행료대비.신일륜전국매층기자원평개채용료이체적법위주적평개방법체계,이매층함기량、가채계수、매층기자원유별평개표준등위관건평개삼수,계통평개료전국42개주요함매층기분지(군)、121개함기구대적매층기자원.평개결과표명:전국매심2 000 m이천매층기지질자원량위36.81×10~(12)m~3,가채자원량위10.87×10~(12)m~3;매층기자원집중분포재악이다사、심수、준갈이등대형분지,재층계,심도화지리배경적분포상구유흔강적불균형성,자원품질교호,이Ⅰ、Ⅱ류위주.
The latest nationwide assessment of coal-bed methane resources is the largest in size and the most complete in re-source series, and the assessment results have been widely applied. The methodologies are introduced in detail and compared with that applied in previous assessments of coal-bed methane resources in China. The latest round of coal-bed resources assess-ment used a method system dominated by volumetric method and various key evaluation parameters including coal-bed methane content, recovery factors, and standards for classification and evaluation of coal-bed methane. A total of 42 major basins (basin groups) containing coal-bed methane and 121 gas-bearing zones methane plays were systematically assessed. The results show that the original coal-bed methane in-place is 36.81 tcm in the coal layers with a burial depth of less than 2000 m, of which 10.87 tcm is ultimately recoverable. The coal-bed methane resources are concentrated in large basins such as Ordos, Qinshui and Junggar. Their distribution in layer series, depth and geographic environment is highly uneven. The resources volume is large and is dominated by type Ⅰ and Ⅱ.