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Method and device for determining instant phase difference of complex seismic trace

A technique of recovering seismic traces and instantaneous phase, which is applied in the field of oil and gas seismic exploration and interpretation, and can solve problems such as phase attributes that do not correspond to local structures

Active Publication Date: 2019-08-06
CHINA UNIV OF PETROLEUM (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The embodiment of the present application provides a method and device for determining the instantaneous phase difference of the complex seismic trace to solve the problem that the phase attribute determined in the prior art does not correspond to the local structure due to the existence of accumulation

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  • Method and device for determining instant phase difference of complex seismic trace
  • Method and device for determining instant phase difference of complex seismic trace
  • Method and device for determining instant phase difference of complex seismic trace

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Embodiment Construction

[0029] The principle and spirit of the present application will be described below with reference to several exemplary embodiments. It should be understood that these embodiments are given only to enable those skilled in the art to better understand and implement the present application, rather than to limit the scope of the present application in any way. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of this disclosure to those skilled in the art.

[0030] Those skilled in the art know that the embodiments of the present application may be realized as a system, device, method or computer program product. Therefore, the disclosure of the present application can be specifically implemented in the form of complete hardware, complete software (including firmware, resident software, microcode, etc.), or a combination of hardware and software.

[0031] Considering that the phase attribute determined in...

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Abstract

The invention provides a method and device for determining the instant phase difference of a complex seismic trace. The method comprises that a complex seismic trace data volume of a target seismic trace is obtained; according to a preset sliding time window, the complex seismic trace data volume is sampled to obtain local complex seismic trace data volumes; instant phases in each local complex seismic trace data volume are determined; the local instant phase difference of each local complex seismic trace data volume is determined according to the instant phases; and an instant phase difference data volume corresponding to the complex seismic trace data volume of the target seismic trace is determined according to the local instant phase difference of each local complex seismic trace datavolume. The problem that the phase attribute does not correspond to local structure due to accumulation in the prior art is solved, and real local phase variance of the complex seismic data volume canbe determined accurately.

Description

technical field [0001] This application relates to the technical field of oil and gas seismic exploration interpretation, in particular to a method and device for determining the instantaneous phase difference of complex seismic traces. Background technique [0002] The instantaneous phase attribute is one of the "three instantaneous attributes" derived from complex seismic trace technology. Since the instantaneous phase attribute is not affected by the reflection coefficient, it can reflect the weaker reflection interface in geology. [0003] However, since the instantaneous phase attribute is an indirect reflection of the reflection characteristics, it is often difficult to explain the reflection characteristics by using the instantaneous phase attribute. One of the main reasons is that the instantaneous phase is "cumulative". This is because the conventional phase calculation method is to perform Hilbert transform on the entire track data, and then take the arctangent of ...

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Application Information

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IPC IPC(8): G01V1/30
CPCG01V1/307G01V2210/63
Inventor 袁三一苏宇昕王铁一王静涵杨珊王尚旭
Owner CHINA UNIV OF PETROLEUM (BEIJING)