| 摘要 |
A computer-implemented method, system, and article of manufacture for generating images of a subsurface region are disclosed. The method includes obtaining seismic data and an earth model related to the subsurface region, forward propagating a source wavefield through the earth model for a limited time range dependent on a first travel time and a second travel time, backward propagating a receiver wavefield through the earth model for the limited time range dependent on the first travel time and the second travel time, and applying an imaging condition to the forward propagated source wavefield and backward propagated receiver wavefield to generate images related to the subsurface region. The first travel time is a length of time taken by seismic energy to travel from a seismic source to an image point in the subsurface region and the second travel time is a length of time taken by seismic energy to travel from a seismic receiver to the image point in the subsurface region. The limited time range is between the first travel time and the second travel time subtracted from a maximum travel time. |
