含气量是进行煤层气资源计算与选区评价的关键。在有效含气量数据太少，不能满足研究工作需要的情况下，根据少量实测含气量数据和煤的等温吸附曲线、储层压力梯度、煤的水分、灰分数据，预测未知区煤层气量，是一种行之有效的方法。实践证明，预测含气量数据与实测含气量数据比较接近，能保证资源量计算及资源评价结果的可靠性。 Gas content is the key to CBM resource calculation and selection evaluation. If the effective gas content data is too small to meet the needs of the research work, a small amount of measured gas content data and coal isothermal adsorption curve, pressure gradient of the reservoir, water and ash content of coal, The effective method. Practice has proved that the predicted gas content data and the measured gas content data are close to ensure the reliability of resource calculation and resource evaluation results.