低滲煤層氣注熱開采滲透規(guī)律研究
發(fā)布時間:2018-07-28 11:41
【摘要】:為分析低滲高儲煤層注熱開采時的滲透規(guī)律,通過實驗室試驗分析得出了山西許村煤礦3號煤在溫度作用下滲透率發(fā)生巨變的滲透率臨界閾值溫度為350℃;通過理論分析得出了低滲儲層注熱開采的熱-流-固數(shù)學(xué)模型,并基于該模型對熱-流-固耦合作用下低滲儲層注熱開采的滲透規(guī)律進行了數(shù)值模擬研究,研究結(jié)果表明:隨著注熱時間的增加,儲層滲透率也在不斷的增大,當(dāng)注熱時間達到5 h時,儲層滲透率較原始滲透率增加14倍左右,注熱效果明顯,5 h之后,注熱對于儲層滲透率的變化影響不大。
[Abstract]:In order to analyze the permeability law of low permeability and high reservoir coal seam during heat injection mining, the critical threshold temperature of permeability change in Xucun coal mine is 350 鈩,
本文編號:2150023
[Abstract]:In order to analyze the permeability law of low permeability and high reservoir coal seam during heat injection mining, the critical threshold temperature of permeability change in Xucun coal mine is 350 鈩,
本文編號:2150023
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