Automated Rock Cuttings Analysis via Image Processing

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Solution Overview

Problem

Current methods for analyzing rock cuttings in the oil and gas industry are human-dependent, time-consuming, and labor-intensive, limiting the efficiency and accuracy of subsurface characterization.

Innovation Solution

A system and method that utilize an analysis and control system to automatically analyze images of rock cuttings, extracting features and determining lithology classification through image similarity and geological information analysis.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If manual analysis methods are used for rock cuttings, then human expertise can be applied to interpret complex geological features, but the analysis process becomes time-consuming and labor-intensive

Engineering Contradiction:
Improveaccuracy of subsurface characterizationVSAvoidturnaround time of interpretation
Core Design Contradiction:
Measurement precisionVSLoss of time

Solution Approach 1:

The patent replaces manual mechanical analysis with an automated image processing system that uses computer vision algorithms to extract features from rock cutting images. The system automatically performs segmentation, feature extraction, and lithology classification, eliminating the need for manual human analysis while maintaining or improving accuracy through consistent application of computational algorithms.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The system creates a digital representation of rock cuttings through high-resolution imaging, then analyzes this digital copy using automated algorithms. This allows multiple analyses to be performed on the same sample without physical manipulation, and enables rapid comparison against reference databases of known lithologies.

Inventive Principle:
Principle #26Copying

2Productivity

If automated image analysis systems are implemented, then analysis speed and productivity are improved, but the complexity of the system increases

Engineering Contradiction:
Improveefficiency of rock cuttings analysisVSAvoidcomplexity of analysis system
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The analysis system is divided into distinct functional modules: image acquisition, segmentation module that separates rock cuttings from background, feature extraction module that identifies key characteristics, and classification module that determines lithology. This modular segmentation reduces overall system complexity by making each component independent and manageable.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The system employs a multi-functional analysis platform that can handle various types of rock cuttings images, different lithology classifications, and multiple feature extraction methods through a unified architecture. This universal approach consolidates what would otherwise require multiple separate systems into a single integrated solution.

Inventive Principle:
Principle #6Universality (Multi-functionality)

3Measurement precision

If comprehensive feature extraction is performed on rock cutting images, then measurement precision and classification accuracy are improved, but the quantity of data to be processed increases

Engineering Contradiction:
Improveaccuracy of cutting properties determinationVSAvoidvolume of image data
Core Design Contradiction:
Measurement precisionVSQuantity of substance

Solution Approach 1:

The system extracts only the most relevant features from rock cutting images, such as color characteristics, texture patterns, shape parameters, and mineralogical indicators. By selectively extracting only the critical features needed for lithology classification rather than processing all image data, the system maintains high accuracy while reducing data volume.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The system performs feature extraction at multiple levels of detail, starting with coarse-scale features for initial classification and progressively analyzing finer details only when needed. This partial action approach processes the minimum necessary data to achieve accurate classification, avoiding unnecessary computation on excessive data.

Inventive Principle:
Principle #16Partial or excessive action

Data Source

PatentUS20250027410A1System and method for estimating rock particle properties based on images and geological information
Publication Date: 2025.01.23 SCHLUMBERGER TECH CORP
  • US20250027410A1 patent drawing
  • US20250027410A1 patent drawing
  • US20250027410A1 patent drawing

AI summary

Systems and methods are provided to analyze rock cuttings and measure physical lithological features of the rock cuttings. An image analysis workflow is provided, which includes multiple computational modules to automatically estimate relevant geological information from rock cuttings. Reference data, manual descriptions, and well log values are associated and used to determine rock properties of the rock cuttings. A software is developed for the image analysis, and results are displayed in various views.