关键词: 中国, 煤层气, 储层, 开发, 技术

Abstract: The commonly used technology for exploitation of coal bed methane (CBM) is not so working for CBM reservoir in China.Six particularities,including poor permeability,low reservoir pressure,poor desorptionability,regionally appeared pulverized coal lenses,etc.,are summarized to characterize China CBM reservoirs.It is pointed out that five items are very important in developing China CBM resources.They are:①enhancing reservoir permeability;②cultivating adequate pressure difference from the production wellbore to far away; ③speeding up gas desorption;④making use of the relief zone;⑤avoiding pulverized coal lenses.To develop various particular CBM reservoirs in China, three technology series are proposed.They are as follows:①relief zone related gas production technology;②multilateral horizontal well pattern plus cavitation technology;③commonly used surface drilling technology.

Key words: China, coalbed methane, reservoir, development technology