Five-Point Deconvolution for Uranium Ore Quantification
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Solution Overview
Problem
Existing uranium ore quantification methods using γ energy spectrum logging face challenges with subdivision interpretation, energy spectrum stripping, and slow logging speed, lacking integration with subdivision interpretation and being prone to interference factors.
Innovation Solution
A five-point deconvolution method for γ energy spectrum logging that combines subdivision interpretation and element stripping, allowing for rapid non-destructive testing and on-site quantitative interpretation of uranium ore content by constructing mathematical relationships between unit layers, multiple energy zones, and energy spectrum logging curves.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If γ energy spectrum logging is used for uranium ore quantification, then measurement precision is improved by stripping thorium/potassium interference, but logging speed decreases and device complexity increases
Solution Approach 1:
The patent divides the continuous logging process into discrete five-point measurement segments. By collecting data at five specific points (one before and four within each ore body segment) and using deconvolution algorithms, the system achieves both high measurement precision through spectral stripping and maintains practical logging speed by focusing measurements only at critical intervals rather than continuously.
Solution Approach 2:
The patent implements periodic measurement sampling at five-point intervals during logging. The probe periodically stops at predetermined positions to collect spectral data, processes it through deconvolution algorithms to separate uranium from thorium and potassium interference, then continues logging. This periodic action balances the time-consuming spectral analysis with overall logging efficiency.
2Measurement precision
If conventional core sampling and chemical analysis are used, then measurement precision is achieved, but time consumption and cost increase significantly
Solution Approach 1:
The patent replaces the mechanical and chemical processes of core sampling, physical transport to laboratories, and wet chemical analysis with an in-situ gamma spectrum logging system. The probe measures gamma radiation directly in the borehole, uses computer algorithms to analyze spectral data and separate uranium signals from interference, and immediately calculates uranium content without physical sample handling or chemical reagents, dramatically reducing time and cost.
Solution Approach 2:
The patent uses gamma radiation as an intermediary carrier to transmit information about uranium content from the ore body to the measurement instrument. Instead of physically extracting and chemically analyzing samples, the system detects gamma rays naturally emitted by uranium and its decay products, using spectral deconvolution to extract quantitative information, thereby eliminating the lengthy sampling and analysis cycle.
3Productivity
If γ total logging is used for uranium exploration, then logging speed is maintained, but measurement precision decreases due to thorium/potassium interference
Solution Approach 1:
The patent extracts and removes the interfering components (thorium and potassium gamma signals) from the total gamma spectrum through deconvolution algorithms. By mathematically separating the spectral contributions of different radionuclides based on their characteristic energy peaks, the system isolates the uranium signal from the total measurement, achieving high precision uranium quantification while maintaining the efficiency of continuous logging operations.
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
This method enables fast and accurate uranium ore quantification by simultaneously obtaining uranium, thorium, and potassium element contents in each unit layer, improving drilling efficiency, reducing exploration costs, and shortening the uranium quantification cycle.
Implementation Method 1
uses the naturally generated or artificially induced radioactive rays of the strata rock to determine whether there are certain nuclides or elements in the strata
Implementation Method 2
γ spectral logging... measure the γ-ray naturally produced in the strata rock in the borehole, and strip out the interference of thorium/potassium or its energy spectrum
Data Source
AI summary
A five-point deconvolution method for quantification of uranium ores by energy spectrum logging disclosed by the invention refers to: carry out γ spectrum logging along the borehole to obtain logging curves in multiple energy zones, using these logging curves and energy spectrum features, inversion calculate the distribution of uranium content along the borehole; the main features are: first, realize the subdivision interpretation of layered strata; second, realize multi-element stripping for energy spectrum logging; third, realize subdivision interpretation by the five-point deconvolution methods; fourth, on-site uranium ores quantification under fast spectral logging conditions can be realized; the invention also discloses two types of algorithm flows of “first stripping, then subdividing” and “first subdividing, then stripping” and the formula for solving the uranium/thorium/potassium content of the unit layer.