【摘 要】
:
贵州省对江南井田煤层发育多,瓦斯含量高,煤层气资源量大,煤与瓦斯突出危险性高.采用体积法计算贵州省对江南井田主要可采煤层煤层气资源量,在评估前期抽采试验井效果的基础
【机 构】
:
中煤科工集团西安研究院有限公司,陕西西安710054
论文部分内容阅读
贵州省对江南井田煤层发育多,瓦斯含量高,煤层气资源量大,煤与瓦斯突出危险性高.采用体积法计算贵州省对江南井田主要可采煤层煤层气资源量,在评估前期抽采试验井效果的基础上,进行对江南井田煤层气抽采项目设计,并采用折现现金流量法对项目进行经济评价.研究结果表明:对江南井田资源潜力较好,资源量为31.05×108m3,资源丰度为1.56×108 m3/km2,是一个中型储量规模、中等丰度的煤层气田;煤层气井单井产气量高,最高可达1 803.94 m3/d,累计排采10年,综合抽采率为31.26%~32.54%,主采煤层M78含气量可降至8.0~13.5 m3/t,抽采效果显著;开发项目经济评价各项指标良好,税后财务内部收益率为8.22%,略大于行业基准收益率,税后财务净现值91.42万元,大于0,税后投资回收期6.98年,略小于基准投资回收期,地面煤层气开发经济上可行.
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