Porosity and rock strength of formation had got by utilizing mathematics model of porosity and rock strength which base on acoustic time have big derivation with actual situation.
现有基于声波时差的孔隙度及岩石强度计算模型反演出的地层孔隙度及岩石强度信息与实际地层偏差较大。
The gas effect on porosity derived from acoustic formation factor formula should not be neglected.
本文通过考察天然气对声波地层因素公式求孔隙度的影响，表明这种影响是不可忽视的。
Acoustic wave is the important basic information to get porosity of formation and develop research about mechanics character of rock.
声波是获取地层孔隙度，开展岩石机械力学性质研究的重要基础资料。
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