Anomalous amplitude suppression method and apparatus

An abnormal amplitude and amplitude technology, applied in the field of geophysical exploration data processing, can solve the problems of poor consistency, low signal-to-noise ratio of seismic data, poor effect, etc., and achieve the effect of improving suppression effect and effective attenuation

Active Publication Date: 2015-09-23
BC P INC CHINA NAT PETROLEUM CORP +1
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Problems solved by technology

However, in the actual seismic records collected, the absolute value of the amplitude of the abnormal sampling point is often very large compared with other sampling points on the seismic trace, and there are often multiple abnormal sampling points around an abnormal sampling point. The median value calculated by using the method of automatically smoothing the abnormal amplitude may also be a large abnormal ampli

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  • Anomalous amplitude suppression method and apparatus
  • Anomalous amplitude suppression method and apparatus
  • Anomalous amplitude suppression method and apparatus

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[0028] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described The embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0029] The invention provides an abnormal amplitude suppressing method for data processing of actual seismic data, especially the data of huge thick loess mountain area. The seismic data processed in the present invention may include different seismic data records such as common-shot seismic data, common-offset seismic data, common-receiver po...

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Abstract

The invention provides an anomalous amplitude suppression method and an apparatus. The method includes: making random arrangement of trace sequence of seismic traces in seismic data and forming to-be-processed trace gather data; calculating the reference amplitude of sampling points of the to-be-processed trace gather data in a predetermined space-time window; comparing the amplitude of the sampling point with the reference amplitude and determining whether the amplitude of the sampling point is greater than the threshold value set based on the reference amplitude; regarding the amplitude of the sampling point whose determination result is yes as the anomalous amplitude; moving the predetermined space-time window to the next sampling point and determining whether the amplitude of the next sampling point is the anomaly amplitude; and performing amplitude attenuation of the amplitude of the sampling point which is determined to be anomalous amplitude. By employing the embodiments, the interferences of the anomalous amplitude in the seismic data can be effectively suppressed, and the data signal to noise ratio is increased.

Description

technical field [0001] The invention belongs to the field of geophysical exploration data processing, in particular to a method and device for suppressing abnormal amplitude. Background technique [0002] With the non-renewable petroleum resources and the increasing development of human beings, the reserves of petroleum resources in the world are gradually decreasing. In order to find and exploit resources more accurately, the data requirements for pre-stack data such as pre-stack inversion and reservoir prediction are getting higher and higher in the exploration of oil reservoir resources. [0003] In seismic data processing, it is necessary to suppress the interference of abnormal amplitudes in the original records, such as abnormal sampling points, sharp pulses, and strong energy near the shot point, so as to achieve the purpose of uniform longitudinal and lateral energy changes in seismic data. In seismic exploration, especially in the thick loess mountainous area, stro...

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Application Information

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IPC IPC(8): G01V1/36
Inventor 罗文山商昌亮陈超群童庆佳
Owner BC P INC CHINA NAT PETROLEUM CORP
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