A Consistency Processing Method for Different Natural Main Frequency Detectors Based on Spectrum Shaping

A processing method and spectrum shaping technology, applied in seismic signal processing, etc., can solve the problem that the consistency of processing results is difficult to be guaranteed, and achieve good amplitude, cost saving, and quality improvement

CN103675909BActive Publication Date: 2016-05-04CHINA PETROLEUM & CHEM CORP +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2016-05-04

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Abstract

The invention discloses a spectral-shaping-based consistency processing method of a different-natural-dominant-frequency detector. The method includes the following steps: 1) data inputting; 2) preprocessing; 3) shot record editing: multi-shot records of the same physical position of two data are selected and top cutting and bottom cutting editing processing, which reserves the part of effective waves, is performed and abnormal track and field values are removed; 4) comprehensive spectral analysis: comprehensive spectral analysis is performed respectively on shot records of different natural dominant frequencies which undergo the editing processing; 5) solving spectral-shaping proportionality factors: according to two comprehensive frequency spectrums and direction which needs to be adjusted, amplitude proportionality factors corresponding to the different frequencies are obtained through analysis; 6) shot-record spectral shaping: the solved spectral-shaping proportionality factors are used to perform spectral shaping on all shot records which need to be adjusted so as to obtain a shot record which is consistent with a target shot record; 7) outputting: the shot record which undergoes the spectral shaping is output. The spectral-shaping-based consistency processing method has a great application prospect in improvement of consistence processing of the different detector natural dominant-frequency records.
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Description

technical field

[0001] The invention relates to the field of geophysical exploration seismic data processing, in particular to the consistent processing of natural main frequency data of different geophones. Background technique

[0002] Consistency processing of seismic data is one of the key issues in continuous seismic data processing and time-lapse seismic data processing. Due to the old and new seismic data collected in different periods, sometimes the natural main frequency of the geophones used in the construction before and after the construction is different. In order to save costs, do not use the same natural main frequency detector for repeated acquisition, it is required to solve the adverse effects of different natural main frequency detectors on the processing results in the data processing. Since there is no known difference between the seismic responses of different natural dominant frequency geophones, it becomes a difficult problem in continuous slice proc...

Examples

Embodiment Construction

[0031] The present invention is further described below in conjunction with embodiment. The scope of the present invention is not limited by these examples, and the scope of the present invention is set forth in the claims.

[0032] (1) Spectrum shaping technology

[0033] According to the objective law of good stability of the comprehensive spectrum recorded in the pre-stack multi-shot effective wave area, the multi-shot records in the same area are used to obtain the spectrum difference and scale factor of different natural main frequency detector data, and the two are made through spectrum shaping. The recorded amplitude and frequency converge.

[0034] (2) Technical implementation steps

[0035] The technical implementation process is as Figure 1-Figure 10 As shown, the experiment shows that the application of the technology of the present invention has obtained a profile with good consistency, and the steps are as follows:

[0036] 1. Data input: including raw data, ...