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Quantitative characterization method and system for sedimentary facies evolution based on geology and geophysics

A geophysical and quantitative characterization technology, applied in geophysical measurement, seismic signal processing, seismology for well logging, etc., to achieve the effect of quantitative characterization

Active Publication Date: 2021-11-26
INST OF GEOLOGY & GEOPHYSICS CHINESE ACAD OF SCI
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Problems solved by technology

[0005] In order to solve the above-mentioned problems in the prior art, that is, under the constraints of the geological model, the prior art cannot systematically and systematically use geophysical technology to realize the quantitative characterization of the evolution of sedimentary facies. - methods for quantitative characterization of sedimentary facies evolution in geophysics, including:

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  • Quantitative characterization method and system for sedimentary facies evolution based on geology and geophysics
  • Quantitative characterization method and system for sedimentary facies evolution based on geology and geophysics
  • Quantitative characterization method and system for sedimentary facies evolution based on geology and geophysics

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[0057]The application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain related inventions, not to limit the invention. It should also be noted that, for the convenience of description, only the parts related to the related invention are shown in the drawings.

[0058] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and embodiments.

[0059] A quantitative characterization method for sedimentary facies evolution based on geology-geophysics of the present invention, the method comprises:

[0060] Step S10, based on the acquired core samples, well logging and seismic data volume, through core and well logging sequen...

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Abstract

The invention belongs to the field of quantitative characterization of sedimentary facies, particularly relates to a quantitative characterization method and system for sedimentary facies evolution based on geology and geophysics. The invention aims to solve the problem that quantitative characterization of sedimentary facies evolution cannot be systematically and systematically realized by utilizing a geophysics technology under the constraint of a geological model in the prior art. The method comprises the following steps: establishing a high-resolution sequence stratigraphic frame by using a core sample, a logging data body and an earthquake data body, and acquiring a three-dimensional sequence interface on an earthquake data volume; acquiring an approximate ancient landform map of a sedimentary period through combination with a travel time difference representing the terrain height of the sedimentary period; with the high-resolution sequence stratigraphic frame as a model, carrying out logging-seismic combined wave impedance inversion; carrying out stratigraphic slice attribute analysis on a wave resistance body; establishing a sand-to-ground ratio-wave impedance mapping relation; and dynamically and quantitatively representing a sedimentary facies evolution process based on the sand-to-ground ratio-wave impedance mapping relation. According to the method, the dynamic and quantitative characterization of the sedimentary facies evolution process in the high-resolution sequence stratigraphic frame can be realized.

Description

technical field [0001] The invention belongs to the field of quantitative characterization of sedimentary facies, and in particular relates to a method and system for quantitative characterization of sedimentary facies evolution based on geology-geophysics. Background technique [0002] The study of sedimentary facies is one of the important links in the study of zone selection and trap prediction in oil and gas exploration. Sedimentary facies that are conducive to oil and gas accumulation, such as delta front branch channel sand bodies and reefs where conventional oil and gas accumulate, and abyssal-semi-abyssic continental shelf facies where unconventional oil and gas accumulate, or high-quality shale in deep lakes are all important Exploration target. Therefore, how to quantitatively predict and characterize sedimentary facies has always been a key technical issue in the field of oil and gas exploration. [0003] The main sedimentary facies characterization techniques i...

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IPC IPC(8): G01V1/50G01V1/30G01V1/36
CPCG01V1/50G01V1/306G01V1/307G01V1/362
Inventor 张旺梁裳恣单小彩
Owner INST OF GEOLOGY & GEOPHYSICS CHINESE ACAD OF SCI
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