After analyzing the limitation of the traditional pore pressure prediction methods, a new method based on the effectivepressure theorem and the acoustic velocity model was proposed.
This result showed that effectivepressure was quite obvious when the liquid was moving in low permeating and porous medium.
实验结果表明，流体在低渗透多孔介质中渗流时，受有效压力的影响明显。
3
On the base of large experimental data set, the influence of effectivepressure on rock velocities is analyzed with regression method and the theory of crack closure.