The result shows that the recovery condition of the CBM well will change with the change of the recovery system, and the permeability of coal reservoirs will also change. 研究結果表明，煤層氣井工作制度的變化會(huì )引起煤層氣井采動(dòng)狀況發(fā)生變化，導致煤儲層滲透率產(chǎn)生波動(dòng)。
The paper mainly introduces the process of estimating the reservoir permeability using the frecquency offset and time lag of Stoneley wave. 本文主要介紹利用斯通利波的頻率偏移和時(shí)間延遲判斷儲層滲透性。
