山西南部上古生界煤层含气性研究Ⅱ.推断区及预测区煤层含气性预测
THE STUDIES ON GAS-BEARING CHARACTERISTICS OF THE UPPER PALEOZOIC COAL SEAMS IN THE SOUTHERN SHANXI,CHINA Ⅱ. PREDICTION OF GAS-BEARING SEAMS IN THE INFERRED AND PREDICTED AREAS
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摘要: 采用含气梯度法、煤级-灰分-含气性类比法及地质条件综合分析法,对山西南部推断区和预测区上古生界主煤层的含气性进行了预测:沁水盆地深部预测区西翼的武乡-安泽一带含气性较好,具有进一步勘探的前景;盆地西南部的沁水-翼城一带含气性较差,基本上失去了煤层气勘探的价值;临汾盆地含气性可能较好,但煤层埋藏较深,勘探开发困难。Abstract: the gas bearing characteristtics of the Upper Paleozoic main seams in the referred and predicted areas of the southern Shanxi were predicted using the methods such as gas content gradient,coal rank/ash yield/gas content analogy and comprehensive geological analysis.It was shown that there might be well gas bearing conditions in the predicted Wuxiang Anze area of the western deep Qinshui basin where there would be the potential of the CBM exploration,that there might be poor in the referred or predicted Qinshui Yicheng area of the southwestern Qinshui basin where there would hardly be the potential;and that there might be relatively good in the Linfeng basin but the CBM exploration and development might be hard due to the deep burial of the seams.