通过对寿阳区块马首区段地质条件、煤层赋存特征、煤层气含气性、渗透性、解吸/吸附特征等研究，认为该区段构造简单，岩层覆盖条件较好；水文地质条件简单，地下水缓流或滞流有利于煤层气富集；主采煤层发育基本稳定，埋藏深度适中；煤层气含量较高，主要在6～16m3/t；煤层割理裂隙发育，整体渗透率较高，非均质性较明显；煤储层处于欠压状态、实测含气饱和度较低、原地应力较低，整体上适合进行煤层气开采。在此基础上估算了煤层气资源储量，并优选区段的中、北部为煤层气开发的有利区。%Through studies on geological condition, coal seam hosting features, CBM gas-bearing property, permeability, desorption/ad-sorption characteristics in the Mashou sector, Shouyang block have considered that structures in the sector are simple, covering condi-tion of rock layers better, hydrogeological condition simple, subcritical flow or viscous flow of groundwater is beneficial to CBM enrich-ment;main minable coal seam development basically stable, buried depth moderate, CBM content rather high, mostly 6~16m3/t;devel-oped coal seam cleats and fractures, overall permeability rather high, anisotropy rather obvious;coal reservoir is in underbalanced pres-sure situation, rather low measured gas saturation and in situ stress, on the whole is propitious to CBM exploitation. On this basis, CBM resources and reserves have been estimated and selected middle and north parts as favorable areas to exploit CBM.
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