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Method and apparatus for seismic imaging processing with enhanced geologic structure preservation

A technology of seismic data and current images, applied in seismic signal processing, seismology, geophysical measurement, etc., can solve problems such as the ill-posed inversion problem that cannot be completely solved

Pending Publication Date: 2021-07-16
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the recent development of new regularization techniques still cannot completely solve the ill-posed nature of the inversion problem

Method used

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  • Method and apparatus for seismic imaging processing with enhanced geologic structure preservation
  • Method and apparatus for seismic imaging processing with enhanced geologic structure preservation
  • Method and apparatus for seismic imaging processing with enhanced geologic structure preservation

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Embodiment Construction

[0038]The present disclosure provides a method involving multiple steps, which can be described and implemented in the context of a general system and computer method executable by a computer. Such computer-executable instructions may include programs, routines, objects, components, data structures, and computer software technologies that can be used to perform particular tasks and process abstract data types. Software implementations of the present disclosure can be coded in different languages ​​for use in various computing platforms and environments. It should be appreciated that the scope and rationale of the present disclosure are not limited to any particular computer software technology.

[0039] Furthermore, those skilled in the art will understand that the present disclosure may be practiced using any one or combination of hardware and software configurations, including but not limited to systems with single and / or multiple computer processors, handheld devices, progr...

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Abstract

The invention provides a method for seismic processing. The method for seismic processing includes steps of seismic signal forward propagation and seismic data back propagation. The subsurface medium image is created after correlating and summarizing forward and backward propagation results. To address migration footprint and noise due to the incomplete data acquisition aperture and migration approximation in the migration operator, the iteration inversion strategy incorporates tensor flow calculated from seismic image. A regularization operator based on structure tensor of image is applied to seismic image inversion.

Description

technical field [0001] The present disclosure generally relates to a method for collecting and processing seismic data and seismic acquisition design. More specifically, the present disclosure provides methods and apparatus for enhancing seismic image enhancement using structure tensors and total variational regularization. Background technique [0002] Seismology is used in exploration, archaeological research and engineering projects that require geological information. Exploration seismic techniques are widely used in oil and gas exploration to identify prospects and types of geological formations. In seismic surveying, seismic waves are sent underground, and the seismic waves reflected from subsurface rock formations back to the surface are recorded by seismic wave receivers, or geophones. Seismic waves are generated by energetic sources, such as small dynamite sources or vibrators on land, or air gun or vibrator sources in marine environments. Multiple energy sources...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V1/28
CPCG01V1/28G01V1/302G01V1/282G01V2210/512G01V2210/614G01V2210/679G01V2210/64G06N3/084G01V2210/67G01V2210/51
Inventor 于建华
Owner CHINA PETROLEUM & CHEM CORP