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Uncertainty Visualization Method of Stratigraphic Correlation Based on Multi-source Data Fusion

A technology of uncertainty and formation correlation, applied in seismology, seismology, seismic signal processing, etc. for well logging records, can solve problems such as errors and uncertainties, and reduce uncertainties, save manpower and Time, the effect of improving the accuracy of formation matching

Active Publication Date: 2021-06-01
ZHEJIANG UNIV OF FINANCE & ECONOMICS
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Problems solved by technology

Analysis results such as stratigraphic correlation conducted by experts in complex geological structures are also prone to errors and uncertainties

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  • Uncertainty Visualization Method of Stratigraphic Correlation Based on Multi-source Data Fusion
  • Uncertainty Visualization Method of Stratigraphic Correlation Based on Multi-source Data Fusion
  • Uncertainty Visualization Method of Stratigraphic Correlation Based on Multi-source Data Fusion

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Embodiment Construction

[0061] The method for visualizing uncertainty of formation correlation based on multi-source data fusion of the present invention will be further described below in combination with the accompanying drawings.

[0062] The process of this embodiment is as follows figure 1 As shown, the method generates synthetic seismic records for each well by convolving the reflectivity and wavelet functions; using dynamic time warping (DTW) to normalize the synthetic seismic records and real seismic records, and performing traditional time-depth Transform to match 3D seismic data and log attribute data; establish seismic horizon structure and quantify uncertainty differences between manually marked stratigraphic horizons and seismic horizons; develop an interactive visualization system for stratigraphic correlation uncertainties , design maps to help users observe the uncertainty of stratigraphic correlation between global or local drilling wells, design stratigraphic views to help users exp...

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Abstract

The invention discloses a stratum correlation uncertainty visualization method based on multi-source data fusion, which is used to quantify the difference in stratum structure extracted from three-dimensional seismic wave data and logging attribute data; an uncertainty visualization system is developed; Combining uncertainty models with visual design enables users to further interactively improve formation correlation results; calculates uncertainty for inconsistent formations between 3D seismic wave data and log attribute data; visual representation of uncertainty and The interaction aims to help experts verify and optimize their related results to realize the visual analysis of uncertainty in stratigraphic correlation, which is of great significance for obtaining accurate seismic interpretation; the invention can not only reduce the uncertainty of stratum matching results, but also improve Stratum matching accuracy can also save a lot of manpower and time in the complex geological exploration process, which is helpful for the rapid establishment of geological models and the effective formulation of energy exploitation plans such as oil and coal.

Description

technical field [0001] The invention belongs to the technical fields of petroleum exploration, graphics and visualization, and in particular relates to a visualization method for stratum correlation uncertainty based on multi-source data fusion. Background technique [0002] Due to the complexity of the subsurface geological structure, traditional stratigraphic correlation methods can only be described based on a single data set, which will cause great uncertainty in the process of stratigraphic correlation. Both logging attribute data and 3D seismic wave data can be effectively applied to stratigraphic correlation. Well logging attribute data reflect the relationship between formation properties and depth, and can effectively display the vertical changes of formation lithology and physical properties (S.M.Luthi and I.D.Bryant. Well-log correlation using aback-propagation neural network. Mathematical Geology, 29( 3): 413–425, 1997.). However, stratigraphic correlations bas...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01V1/40G01V1/28G01V1/30G06K9/62
CPCG01V1/40G01V1/282G01V1/306G01V2210/624G06F18/251
Inventor 周志光张汝敏郭智勇刘玉华
Owner ZHEJIANG UNIV OF FINANCE & ECONOMICS
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