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A Displacement Field Residual Motion Correction Method and Device

A technology of displacement field and dynamic correction, applied in seismic signal processing and other directions, to achieve the effect of improving accuracy, imaging quality and resolution

Active Publication Date: 2018-07-17
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology

[0004] This disclosure proposes a displacement field residual motion correction method and device, which are used to solve the problem of residual motion correction in pre-stack migration imaging gathers, so as to meet the requirements of AVO analysis, seismic attribute extraction and pre-stack elastic parameter inversion

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Embodiment Construction

[0018] Preferred embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although preferred embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0019] In seismic data processing, due to the difference in signal-to-noise ratio of data, the existence of anisotropy problems, the limitations of conventional static correction and dynamic correction, the processed common imaging point gathers still have the problem of residual dynamic correction, which cannot meet the requirements of follow-up. job requirements.

[0020] Such as figure 1 As shown, this embodiment discloses a displacemen...

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Abstract

The present invention belongs to the geophysical exploration seismic data processing field and discloses a displacement field residual dynamic correction method and device. The displacement field residual dynamic correction method includes the following steps that: the trace gather of prestack seismic data is obtained; a near-deviation distance trace is selected from the trace gather and is adopted as a model trace; superposition traces with different deviation distances in the trace gather are obtained; the displacement fields of the superposition traces corresponding to each deviation distance relative to the model trace are calculated; and the calculated displacement fields are applied to the corresponding deviation distances, so that the residual dynamic correction of the deviation distances can be carried out. With the displacement field residual dynamic correction method and device of the invention adopted, the flattening of the lineups of the traces can be realized, the imaging quality and resolution of seismic data can be improved, and the accuracy of prestack AVO analysis and elastic parameter inversion can be improved.

Description

technical field [0001] The invention relates to the field of geophysical exploration seismic data processing, and more specifically, to a displacement field residual motion correction method and device. Background technique [0002] Due to the difference in the quality of seismic data, the limitations of static correction methods, the accuracy of velocity calculation, and the existence of anisotropy, prestack migration imaging gathers often have the problem of residual dynamic correction. Without leveling, the purpose of in-phase stacking cannot be achieved, which reduces the resolution of seismic data and affects the imaging accuracy, which brings difficulties to AVO analysis and pre-stack elastic parameter inversion. At present, there are many methods to solve the residual motion correction. In the early stage, the residual motion correction was treated as a local random static time shift through coherent, high-precision superposition technology or radial filtering technol...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01V1/36
Inventor 庞海玲高鸿朱成宏张春涛徐蔚亚赵艳平王晓燕
Owner CHINA PETROLEUM & CHEM CORP
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