Method for acquiring anisotropic parameter delta field of TTI (Transmission Time Interval) medium and application thereof

The invention discloses a TTI medium anisotropy parameter delta field obtaining method and application thereof, and belongs to the technical field of petroleum and natural gas exploration. The invention provides a method for obtaining a TTI medium anisotropy parameter delta field by carrying out true earth surface full-process anisotropy speed iteration from an empirical constant delta 0. The acquisition method can be applied to seismic migration imaging speed modeling. According to the TTI medium anisotropy parameter delta field acquisition method provided by the invention, the influence of the accuracy of the real earth surface TTI pre-stack depth migration speed on the accuracy and rationality of delta field calculation is considered, and the speed iteration capability and the calculation precision are improved; by applying the method, the seismic section imaging effect and the well-seismic coincidence rate can be obviously improved. The TTI medium anisotropy parameter delta field obtaining method and appl