Ancient landform recovery method for extrusion basin

The invention relates to an ancient landform recovery method for an extruded basin, and belongs to the technical field of exploration and development. The method comprises the steps of obtaining seismic data of a target area, and determining a reference surface; performing tracking interpretation on an unconformity surface and a reference surface in a target stratum by using seismic data to obtain depth data of the top/bottom of the target stratum and a reverse fault of a target area; dividing the target layer into a plurality of fault blocks by taking the reverse fault as a boundary, and calculating thickness data of each fault block; selecting a section and determining the nail block to perform balanced section recovery to obtain the horizontal displacement of other fault blocks relative to the nail block; performing coordinate homing calculation on the thickness data of other fault blocks according to the horizontal displacement; and splicing and mapping the thickness data after coordinate homing to comple