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Oil and gas reservoir inversion method and device based on navigation pyramid decomposition

A technology of pyramid decomposition and oil and gas reservoirs, applied in the field of oil and gas reservoir inversion based on navigation pyramid decomposition, can solve problems such as unsatisfactory geological body identification, and achieve the effect of improving fine description

Pending Publication Date: 2021-08-06
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology

[0005] In order to solve the problem that in the current conventional inversion application of seismic information, the comprehensive information of the entire seismic scale is used, which cannot satisfy the identification of geological bodies of different scales. The embodiment of this application provides a kind of oil and gas reservoir based on navigation pyramid decomposition. Inversion method and device

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  • Oil and gas reservoir inversion method and device based on navigation pyramid decomposition
  • Oil and gas reservoir inversion method and device based on navigation pyramid decomposition
  • Oil and gas reservoir inversion method and device based on navigation pyramid decomposition

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Embodiment 1

[0059] Such as figure 1 As shown, the present application provides a method for inversion of oil and gas reservoirs based on navigation pyramid decomposition, including steps: S101, based on the navigation pyramid algorithm, performing multi-scale decomposition on the original seismic data to obtain multi-scale seismic data; S103, multi-scale seismic data; Scale seismic data are reorganized; S105, well-seismic-horizon data adjustment is performed on the reorganized seismic data; S107, seismic inversion is performed based on seismic data of different scales.

[0060] In view of the complex characteristics of sand body boundaries and fault boundaries in the study area, this application proposes a navigation pyramid algorithm to process seismic data. Through multi-scale decomposition and combination of seismic data, geological body information is extracted from different scales and directions. According to the description of geological body objects To meet the demand, select the ...

Embodiment 2

[0062] Such as figure 2 As shown, the oil and gas reservoir inversion method based on navigation pyramid decomposition in this application includes steps: S101-1, selecting and setting key parameters, and realizing the navigation pyramid method to decompose seismic data through a directionally steerable filter to obtain multi-scale seismic data; S103, reorganize multi-scale seismic data; S105, perform well-seismic-horizon data adjustment on the reorganized seismic data; S107, perform seismic inversion based on seismic data of different scales.

[0063] S101-1 specifically includes: selection and setting of key parameters, key parameters include: low-pass radial filter start and cut-off wave number and smoothing coefficient; the linear enhancement type highlights the discontinuity of the geological body, and the planarity enhancement type highlights What is more important is the continuity characteristics of the geological body; the dimension attribute analysis method filter s...

Embodiment 3

[0071] Such as image 3 As shown, the oil and gas reservoir inversion method based on navigation pyramid decomposition in this application includes steps: S101-1, selecting and setting key parameters, and realizing the navigation pyramid method to decompose seismic data through a directionally steerable filter to obtain multi-scale seismic data; S103-1, for the analysis of macro-geological laws, use large-scale level2, level3, and level4 data as the basic area reconstruction; for the research on the heterogeneity and superimposition patterns of sand bodies inside the reservoir, use small-scale level0, level1 Data-based reconstruction; S105, adjust well-seismic-horizon data on the restructured seismic data; S107, perform seismic inversion based on seismic data of different scales. Each step is described below.

[0072] S101-1, selecting and setting key parameters, and implementing navigation pyramid method to decompose seismic data through a directionally steerable filter to o...

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Abstract

The invention provides an oil and gas reservoir inversion method and device based on navigation pyramid decomposition, and the method comprises the steps: carrying out the multi-scale decomposition of original seismic data based on a navigation pyramid algorithm, and obtaining multi-scale seismic data; carrying out recombination on the multi-scale seismic data; performing well-seismic-horizon data adjustment on the recombined seismic data; and carrying out seismic inversion based on the seismic data of different scales. The seismic inversion method of the navigation pyramid multi-scale decomposition seismic data is originally provided on the basis of quantitative representation originality of different geologic bodies, and the recognition and description of boundary and internal features of the geologic units under different scales are achieved. According to the well-positive joint reservoir inversion method based on the seismic data of different scales, the distribution characteristics of the geologic body can be macroscopically described, the sand body distribution can be microscopically and quantitatively described, and the fine description of the reservoir is improved.

Description

technical field [0001] The invention belongs to the field of oil field exploration and development, and in particular relates to an oil and gas reservoir inversion method and device based on navigation pyramid decomposition. Background technique [0002] Seismic inversion technology is a comprehensive use of seismic, logging, geological and other data to reveal the spatial geometry of underground target layers (reservoirs, oil and gas layers, etc.) It is a process of matching, converting and combining large-area continuous distributed seismic data with high-resolution well point logging data. Therefore, it is also an advantage of seismic inversion to combine vertical high-resolution borehole data with laterally stable high-resolution seismic three-dimensional data to predict the spatial variation of reservoir thickness and the distribution of lithology. [0003] Seismic inversion is widely used in various stages of oil and gas exploration and development. In the exploratio...

Claims

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Application Information

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IPC IPC(8): G01V1/28G01V1/30
CPCG01V1/28G01V1/301
Inventor 陈刚刘金华葛政俊夏步余林波熊家林
Owner CHINA PETROLEUM & CHEM CORP
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