f 3D Globally Optimized Seismic Inversion

A globally optimized seismic inversion method is used for inversion of a 3D seismic data cube front the producing Dan Field, Danish Central Graben. As the inversion method is globally optimized no seismic interpretation is carried out prior to the inversion. Only 5 control parameters and the acoustic impedance log are used to setup the seismic inversion, The 1.400 by 1.525 km seismic data tube consisting of 3,416 traces is inverted from 1.6 to 2.2 sec. TWT. This interval covers chalk deposits and the seismic reflection pattem exhibits prominent lateral variation. The vertical well M-8x with both sonic log and density log is located within the datatube.