A 3D Seismic Excitation Point Optimization Method for Seismic Exploration

Abstract

The invention discloses a three-dimensional seismic excitation point optimization method for seismic exploration. The three-dimensional seismic excitation point optimization method for the seismic exploration comprises the following steps: generating a normal incidence remote-sensing image and a digital elevation model according to received satellite remote sensing data, extracting terrain data, lithology data and humidity data and confirming a compulsory evading area according to the normal incidence remote-sensing image, extracting altitude data, gradient data and fluctuating degree data according to the digital elevation model, optimizing and designing three-dimensional theory excitation points according to a line-by-line and point-by-point manner, labeling excitation points which are in the compulsory evading area as nonenforceable excitation points, confirming motion limiting parameters according to acquisition design rules set in advance, confirming excitation goodness according to the gradient data, the humidity data, the lithology data and the fluctuating degree data, confirming moving goodness according to moving point exciting goodness, theory point exciting goodness and moving distance, comparing the theory excitation points with the upper limit of pre-set exciting goodness, if the theory excitation points are larger than the upper limit, adjustment is not performed, if the theory excitation points are not larger than the upper limit, horizontal offset adjustment and longitudinal offset adjustment are performed, and generating excitation point optimized results according to the adjusted excitation points.

Description

technical field [0001] The invention relates to oilfield seismic exploration technology, in particular to a three-dimensional seismic excitation point optimization method for seismic exploration. Background technique [0002] Seismic exploration on complex surfaces is difficult due to large differences in regional topography and variable near-surface lithology, including data acquisition, low signal-to-noise ratio, static correction, and velocity analysis and imaging. Especially in the complex exploration areas in the west, due to the constraints of landforms and construction conditions, it is difficult to reach, resulting in lost track and shot, or unsatisfactory excitation points, which affects the quality of data collection. [0003] At present, well shot is the only excitation method for seismic exploration in complex mountainous areas. Realizing well shot excitation, reducing shot loss and improving the excitation effect of each well location is the key to ensuring the ...

AI Technical Summary

Problems solved by technology

[0002] Seismic exploration on complex surfaces is difficult due to large differences in regional topography and variable near-surface lithology, including data acquisition, low signal-to-noise ratio, static correction, and velocity analysis and imaging.

Especially in the complex exploration areas in the west, due to the constraints of landforms and construction conditions, it is difficult to reach, resulting in lost track and shot, or unsatisfactory excitation points, thus affecting the quality of data collection

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