Seismic Inversion Correction Using Three-Dimensional Residual Fit
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Solution Overview
Problem
Seismic inversion data is prone to inaccuracies due to noise, environmental factors, and assumptions about subsurface properties, leading to unreliable reservoir characterization and well placement in hydrocarbon exploration.
Innovation Solution
Combining seismic inversion data with localized wellbore measurements using an inverse distance squared interpolation method to correct seismic inversion volumes, enhancing accuracy by integrating precise wellbore data to refine seismic interpretations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If seismic inversion data is used to characterize subsurface reservoirs, then spatial coverage is provided, but accuracy and reliability are reduced due to noise and environmental factors
Solution Approach 1:
The patent combines seismic inversion data with wellbore measurement data to create a corrected seismic inversion volume. The wellbore data, which provides accurate localized measurements, is merged with the broader seismic inversion data through an interpolation process, thereby improving the overall accuracy while maintaining spatial coverage.
Solution Approach 2:
The patent uses an interpolation model as an intermediary to bridge the gap between wellbore measurements and seismic inversion data. This intermediary process distributes residual values from wellbore data throughout the seismic volume, correcting inaccuracies while preserving the spatial information from the original seismic data.
2Reliability
If wellbore measurement data is used to correct seismic inversion data, then accuracy is improved, but the complexity of data processing increases
Solution Approach 1:
The patent applies local quality correction by using wellbore measurement data only at specific locations where wells are present, while the corrected values are then distributed to surrounding areas through interpolation. This approach maintains high accuracy at well locations while systematically improving the broader region without requiring complete reprocessing of all data.
Solution Approach 2:
The patent transforms the correction process from a simple point-to-point adjustment to a three-dimensional volume correction by distributing residual values throughout the seismic inversion volume. This dimensional approach allows accurate point measurements to influence a broader spatial region, improving accuracy without proportionally increasing processing complexity.
3Device complexity
If seismic data alone is used for reservoir characterization, then processing is simpler, but the ability to detect hydrocarbon deposits is reduced
Solution Approach 1:
The patent implements a feedback mechanism where wellbore measurement data is used to correct and refine the seismic inversion data. The residual values from comparing wellbore and seismic data are fed back into the seismic inversion volume through interpolation, continuously improving the detection capability while maintaining a relatively simple processing framework.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Improves the correlation between wellbore measurements and seismic data, increasing the accuracy of subsurface feature representation and enhancing the likelihood of hydrocarbon deposit detection, thereby optimizing well placement and reservoir modeling.
Implementation Method 1
generating residual seismic volume data by transforming the residual values, the transforming comprising an interpolation of the residual values between the plurality of wells using an inverse distance squared function
Data Source
AI summary
A method for determining a seismic inversion volume of a subsurface. The method includes obtaining seismic data of subsurface that includes multiple wells, generating an inverted seismic volume based on the seismic data, and obtaining wellbore measurement data from multiple wells in the subsurface. The method further includes determining residual values representing a difference between values of the wellbore measurement data and the inverted seismic volume data at each of the wellbore sites, generating residual volume data by transforming the residual values, the transforming comprising an interpolation of the residual values between each of the wellbore sites using an inverse distance squared function, and generating corrected seismic volume data based on a difference between values of the residual seismic volume data and the inverted seismic volume data.