Three-dimensional seismic data processing method and system

A data processing system and three-dimensional seismic technology are applied in the field of coalfield geophysical prospecting to achieve the effects of improving imaging quality, resolution and signal-to-noise ratio.

Active Publication Date: 2016-11-16
CHINA SHENHUA ENERGY CO LTD +2
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[0004] The purpose of the present invention is to provide a three-dimensional seismic data processing method and system for shallow-buried deep coal seams, which are used to achieve the purpose of improving the exploration accuracy of complex geological structures in shallow-buried deep mines and to solve the imaging problem of shallow-buried deep coal seams

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[0026] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0027] In view of geological problems such as the development of gullies in loess hilly landforms, shallow coal seams, large lateral changes in coal measure strata, and complex underground geological structures, this implementation mode provides a 3D seismic data processing method for shallow buried deep coal seams, such as figure 1 As shown, the method includes: using a variety of static correction methods to coordinate the processing of 3D seismic data, so that the weak reflection signals in the 3D seismic data are superimposed in phase; and / or for the 3D seismic data after static correction, using frequency-wavenumber The three-dimensional cone filter in the ...

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Abstract

The invention relates to the field of coalfield geophysical prospecting, and discloses a three-dimensional seismic data processing method and system. The three-dimensional seismic data processing method comprises the steps that three-dimensional seismic data are processed in a coordinated by using multiple static correction methods so that the weak reflection signals of the three-dimensional seismic data are enabled to be superposed in an in-phase way; and/or surface wave suppression is performed on the three-dimensional seismic data after static correction by using three-dimensional conical filtering based on a frequency-wavenumber domain. The imaging problem of the shallow depth coal seam can be effectively solved by the three-dimensional seismic data processing method and system.

Description

technical field [0001] The invention relates to the field of coalfield geophysical prospecting, in particular to a three-dimensional seismic data processing method and system for shallow buried deep coal seams. Background technique [0002] With the development of coalfield exploration and development, surface and underground seismic geological conditions have become more and more complex, mainly reflected in: (1) surface types are diverse, and low-velocity zones are very different, resulting in low signal-to-noise ratio and low resolution of seismic signals , the continuity of the reflected wave event is poor, and the seismic imaging is poor; (2) Due to the complex underground geological structure, especially the development of faults, the quality of seismic data is affected, resulting in poor quality of seismic data, which increases the difficulty of processing, so that the processing results cannot meet the needs of coal fields. Exploration and development needs. [0003...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V1/36
CPCG01V1/362G01V1/364G01V2210/53
Inventor 杜文凤杨俊哲彭苏萍贺安民潘金何瑞敏勾精为
Owner CHINA SHENHUA ENERGY CO LTD
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