Tomographic static correction first-break picking method for high-speed crystallization salt crust covering area

The invention discloses a tomographic static correction first-break picking method for a high-speed crystallization salt crust covering area. The method includes: determining the near-surface structure type of the high-speed crystallization salt crust covering area by employing single-shot record near-surface wave field characteristics, micro-logging data, and forward modeling analysis of a detection area; for the single-shot record obtained by forward modeling of a near-surface model whose low-speed layer is covered by a high-speed layer, avoiding first break of "a high-speed top cap", and picking refraction wave arrival of a high-speed top interface under first break of the high-speed top hat; and finally performing tomographic inversion static correction by employing the picked refraction wave arrival of the high-speed top interface. The method is used for near-surface tomographic static correction first-break picking of the high-speed crystallization salt crust covering areas and near-surface structure type areas whose low-speed layers are covered by high-speed layers such as permanent frozen layers. According to the method, the influence of the high-speed crystallization salt crust covering area near-surface on time travel of seismic wave fields can be correctly solved, the underground structural form is truly reflected, reliable basic data is provided for interpretation personnel, and good effect is provided for actual production.