Provided is a high-precision residual static
correction method with combination between space variation and a plurality of
time windows. The high-precision residual static
correction method with combination between space variation and the
time windows comprises the steps of (1) obtaining an accurate basic static correction value, solving the problem of the
long wavelength, (2) carrying out pre-stack
noise removal to increase the
signal to
noise ratio, (3) carrying out three-dimensional space control on the space of an underground structure to select and determine space-variant
time windows, (4) determining the number of the space-variant time windows and the
time range according to the variation trend of the underground structure, (5) carrying out calculation to obtain models and residual static correction values through different space-variant time windows according to the selected
time range, (6) resolving the residual static correction value, carrying out three-dimensional space splicing on the residual static correction value according to the stacking effect calculated through different space-variant time windows, and (7) resolving the spliced residual static correction value into respective shot points, geophones and a CMP residual static correction value. The integral
signal to
noise ratio of a stacked section obtained through the high-precision residual static
correction method with combination between space variation and the time windows is increased, The whole appearance of the section can be clearer compared with the result obtained through conventional residual static correction of a single time window, local details can be clearer, and the high-precision residual static correction method with combination between space variation and the time windows is especially feasible and effective in a double-complexity area and an area with a low
signal to noise ratio.