High-resolution seismic inversion method driven by seismic waveforms

A seismic waveform and high-resolution technology, applied in the field of oil and gas geophysical exploration, can solve the problem of low seismic inversion resolution and achieve the effect of high-resolution inversion

Active Publication Date: 2020-12-29
北京中恒利华石油技术研究所
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Problems solved by technology

[0006] The main purpose of the present invention is to provide a high-resolution seismic inversion method driven by seismic waveforms, aiming to solve the technical problem of low seismic inversion resolution existing in the prior art

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  • High-resolution seismic inversion method driven by seismic waveforms
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Embodiment Construction

[0032]It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention.

[0033]The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0034]The present invention proposes an embodiment. In order to organically combine the horizontal high resolution of seismic data and the vertical high resolution of logging data, the present invention proposes a method based on the principle of similarity of seismic waveforms, using ...

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Abstract

The invention discloses a high-resolution seismic inversion method driven by seismic waveforms. Phase control inversion in a real sense is realized through seismic waveform clustering, and phase control is automatic phase control realized by actually-acquired seismic data and is more objective and real; a common structure is obtained through curves in a seismic waveform-wave impedance curve samplegroup to establish a high-frequency initial model, and high-resolution inversion is realized; and meanwhile, in the inversion process, inversion reliability evaluation indexes are established by utilizing correlation coefficients of a well-to-seismic synthesis record and correlation coefficients of a to-be-inverted channel waveform and a selected sample well waveform, and quantitative characterization of the inversion result quality is realized. The high-resolution seismic inversion method driven by the seismic waveforms aims to solve the technical problem of low seismic inversion resolutionin the prior art.

Description

Technical field[0001]The invention relates to the technical field of oil and gas geophysical exploration, in particular to a high-resolution seismic inversion method driven by seismic waveforms.Background technique[0002]Nearly 90% of my country’s oil reserves come from sandstone dominated by continental lake basin sediments. The continental sedimentary sandstones often have the characteristics of multiple provenance, near provenance, short water flow, rapid changes and thin sand bodies. Most of them are thin sandstones or thin interbeds The thickness of a single layer of sandstone is generally only 1-3 meters or even smaller. From the principle of seismic exploration, the maximum stratum thickness that can be predicted by seismic data is often only 20-30m. Therefore, conventional seismic inversion methods cannot meet the requirements of thin sandstone prediction.[0003]In order to solve the problem of thin sandstone prediction, there are mainly two mainstream technical methods. One i...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V1/48G01V1/50G01V1/28G01V1/30
CPCG01V1/282G01V1/306G01V1/48G01V1/50
Inventor 毕建军陈彦虎李志向张旭升纪晓超
Owner 北京中恒利华石油技术研究所
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