Stratum Rock Component Calculation via Element Capture Spectroscopy Normalization
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Solution Overview
Problem
Current methods for calculating stratum rock component contents in oil-gas exploration are limited by low precision and inefficient data utilization, particularly due to limited information in conventional well logging data and tedious processing of element capture energy spectrum data, with conversion models not ideal for Chinese sedimentary rocks.
Innovation Solution
A method involving normalization processing of element yields from element capture energy spectrum well logging data, establishing a well logging curve response equation set using a pre-established stratum rock interpretation model, and calculating stratum rock component contents using an optimization algorithm to improve precision and adaptability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional well logging data is used to calculate rock component contents, then the calculation process is simple, but the information available is limited and calculation precision is low
Solution Approach 1:
The patent combines conventional well logging data with element capture energy spectrum well logging data to create a composite data set. This merging allows the calculation to utilize both the simplicity of conventional methods and the rich elemental information from energy spectrum data, thereby improving calculation precision while maintaining reasonable process simplicity.
Solution Approach 2:
The patent creates a composite interpretation model that integrates multiple data sources (conventional logging curves and element capture energy spectrum data) similar to how composite materials combine different substances to achieve superior properties. This composite approach enables more accurate rock component content calculation by leveraging the strengths of each data type.
2Measurement precision
If element capture energy spectrum well logging data is processed through 'oxygen closing' conversion, then element yields are converted to weight percentages, but the processing is tedious and conversion models are not ideal for Chinese sedimentary rocks
Solution Approach 1:
The patent extracts and utilizes the raw element yield data from energy spectrum measurements directly, without performing the tedious 'oxygen closing' conversion process. By taking out the essential elemental information in its original form and using it directly in calculations, the method avoids complex processing steps while maintaining accuracy for Chinese sedimentary rocks.
Solution Approach 2:
Instead of converting element yields to weight percentages through traditional 'oxygen closing' methods, the patent inverts the approach by directly using element yield ratios in conjunction with conventional logging data to calculate mineral contents. This inverted methodology bypasses the problematic conversion step while achieving accurate results.
3Ease of operation
If empirical relations between stratum minerals and conventional well logging responses are used, then calculation is straightforward, but data utilization degree is low and calculation precision is limited
Solution Approach 1:
The patent creates a multi-functional calculation framework that simultaneously utilizes conventional well logging data and element capture energy spectrum data. This universal approach allows the system to extract maximum information from both data sources, improving data utilization efficiency while maintaining calculation ease through integrated processing.
Solution Approach 2:
The patent adds another dimension to the calculation by incorporating element capture energy spectrum data alongside conventional logging data. This dimensional expansion enables more comprehensive utilization of available information, transforming the calculation from a single-data-source approach to a multi-dimensional data integration approach that improves both precision and information utilization.
Data Source
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AI summary
Disclosed is a method of acquiring the rock component content in a stratum, the method comprising: on the basis of acquired element capture spectroscopy logging data, performing normalization processing on each element yield in the stratum rock components; on the basis of an element yield curve obtained from the normalization processing and a pre-established stratum rock interpretation model, establishing a logging curve response equation set; and utilizing the established logging curve response equation set and an optimization algorithm, calculating the content of a rock component in a stratum. The method and device can directly process element yield data of element capture spectroscopy logging, and can improve the accuracy of calculating the rock component in a stratum.