Impedance inversion method constrained with crosswell seismic data

Impedance inversion of surface seismic data is an inherently non-unique problem. The conventional seismic inversion resolution is limited to characterize the subsurface reservoirs because of the narrow frequency bandwidth. The high frequency components of crosswell seismic data are rich enough to connect the surface seismic data and the logging curve. Based on the sparse spike inversion assumption, the crosswell seismic data is introduced into the surface seismic impedance inversion flow. The objective function of impedance inversion method is built constrained with the crosswell seismic data and well logging data. The field data inversion result shows that the crosswell seismic data constrained inversion method can improve the resolution of the conventional well-logging constrained inversion method. It is a new way to solve the geology problems with kinds of geophysical data.