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Uniformity analysis method of three-dimensional observation system

A technology of observation system and analysis method, applied in the direction of seismic signal processing, etc., can solve the problems that are not given, affect the qualitative analysis results and cannot accurately judge the uniformity of the coverage area, and achieve the effect of choosing science

Active Publication Date: 2011-04-20
CHINA PETROCHEMICAL CORP +1
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Problems solved by technology

[0005] The purpose of the present invention is to overcome the artificial qualitative analysis in the prior art, which does not provide intuitive maps, affects the qualitative analysis results and only performs the calculation of a single surface element and cannot accurately judge the uniformity of the full coverage area, and provides a method from Uniformity analysis method for quantitative 3D observation system at two levels of single bin and full coverage area

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Embodiment Construction

[0025] The present invention is further described in conjunction with the accompanying drawings.

[0026] attached by Figure 4 As can be seen, the present invention comprises the following steps:

[0027] The parameters in the five existing observation system schemes in Table 1 are used to obtain the SPS data.

[0028] Table 1 Schemes of different observation systems

[0029]

[0030] Calculated from the SPS data, the multiple bin attribute data in the seismic acquisition full coverage area of ​​different 3D observation systems are obtained, including the coverage times, offsets and azimuths in each bin, and the offset and azimuth data are obtained from large to small sort.

[0031] The non-uniform coefficient of coverage frequency distribution, the non-uniform coefficient of azimuth distribution, the non-uniform coefficient of offset distance distribution, and the non-uniform coefficient of offset coverage are calculated respectively, and the results in Table 2 are obt...

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Abstract

The invention provides a uniformity quantitative analysis method of a three-dimensional observation system. The uniformity quantitative analysis method is as follows: by calculating non-uniformity coefficient of coverage time distribution, non-uniformity coefficient of geophone offset distribution, non-uniformity coefficient of azimuth angle distribution and non-uniformity coefficient of geophonecoverage, analyzing the distribution uniformity of coverage time, the geophone offset, the azimuth angle and the geophone coverage of the three-dimensional observation system qualitatively and quantitatively from two levels of a single surface element and a plurality of surface elements, instructing the design of the observation system, and providing basis of judgment for the accuracy of acquisition construction, so that the selection of the three-dimensional observation system can be more scientific, reasonable and objective.

Description

technical field [0001] The invention relates to a method for analyzing the uniformity of a three-dimensional observation system, which belongs to the technical field of optimal design of a three-dimensional observation system for petroleum seismic exploration, in particular to a method for quantitatively analyzing the uniformity of a three-dimensional observation system for seismic acquisition. Background technique [0002] High-precision 3D seismic technology is a practical and feasible technical method to solve complex problems such as broken fault blocks, hidden and lithologic oil and gas reservoirs in the face of complex seismic geological conditions at this stage. [0003] The observation system is mainly used to describe the spatial position and logical relationship between shot points and receiver points. It is the primary carrier of high-precision 3D seismic exploration technology, the main factor determining the quality of seismic acquisition data, and the basis of s...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V1/28G01V1/30
Inventor 周明非碗学俭沈万杰符力耘吴树奎张松平杨波邓会平孙伟家
Owner CHINA PETROCHEMICAL CORP
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