Adaptive homopoty conjugate gradient method for inversion of two-dimensional wave equation with well log constraint

The inversion problem of wave equation has a wide range of applications in many areas.It faces non-linear,ill-posed difficulty and needs a huge amount of computation.Due to the characteristics of the inversion problem of wave equation,the 2-D wave equation model is considered.A joint inversion to the velocity parameter of the model is given by using the joint inversion technique of seismic data and well-log information and associating the homotopy conjugate gradient method with the logging restriction,which achieves the whole distributed information of the velocity parameter.Consequently,the wave equation inversion has stronger anti-noise capability and higher calculation accuracy.