AI Hydrogen Sulfide Prediction from Mudlogging Data

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Solution Overview

Problem

Current methods lack real-time monitoring and determination of hydrogen sulfide concentration downhole during well drilling, posing health and equipment risks due to its corrosive nature and hazardous effects.

Innovation Solution

A system utilizing mudlogging data and artificial intelligence to predict hydrogen sulfide concentration, which includes a gas extractor, shale shaker, and chromatography instrument, processing data with an AI model to adjust drilling operations and plan well completions and production.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If traditional mudlogging methods are used to monitor gas composition, then basic gas detection is available, but real-time hydrogen sulfide concentration determination and prediction are not achieved

Engineering Contradiction:
Improvehydrogen sulfide concentration determinationVSAvoidreal-time monitoring capability
Core Design Contradiction:
Measurement precisionVSLoss of time

Solution Approach 1:

The patent replaces traditional mechanical/chemical analysis methods with an artificial intelligence model that processes mudlogging data to predict hydrogen sulfide concentration. The AI system analyzes patterns in existing mudlogging data (gas chromatography results, drilling parameters, geological information) to determine H2S levels in real-time, eliminating the need for direct downhole H2S measurement equipment.

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

Solution Approach 2:

The patent uses an intermediary AI model that acts as a mediator between available mudlogging data and hydrogen sulfide concentration determination. The AI model processes multiple input parameters (gas composition, drilling rate, geological data) and translates them into predictive H2S concentration information, enabling real-time monitoring without direct measurement.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Measurement precision

If downhole hydrogen sulfide sensors are deployed, then direct measurement capability is improved, but equipment complexity and cost increase

Engineering Contradiction:
Improvehydrogen sulfide concentration measurementVSAvoiddownhole equipment configuration
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The patent extracts the hydrogen sulfide prediction capability from complex downhole measurement equipment and relocates it to surface-based AI processing. By removing the need for specialized downhole H2S sensors, the system achieves H2S determination using existing mudlogging infrastructure combined with artificial intelligence analysis.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The patent creates a virtual model of hydrogen sulfide concentration through AI prediction based on correlated parameters from mudlogging data. Instead of physically measuring H2S downhole, the system creates an accurate digital representation of H2S levels by analyzing patterns in available data, effectively copying the measurement function through computation.

Inventive Principle:
Principle #26Copying

3Object-affected harmful factors

If real-time hydrogen sulfide monitoring is implemented, then health and safety risks are reduced, but data processing complexity increases

Engineering Contradiction:
Improvehydrogen sulfide exposure riskVSAvoiddata processing system
Core Design Contradiction:
Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The patent implements a self-service system where the AI model automatically processes mudlogging data, identifies patterns indicating hydrogen sulfide presence, and generates real-time concentration predictions without requiring complex external analysis systems. The system serves itself by utilizing existing data infrastructure and computational resources.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The patent establishes a feedback loop where the AI model continuously processes incoming mudlogging data, compares predictions with actual conditions, and adjusts its analysis to improve accuracy. This feedback mechanism enables real-time monitoring and early warning capabilities while managing processing complexity through iterative optimization.

Inventive Principle:
Principle #23Feedback

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

Enables real-time monitoring and adjustment of drilling operations to mitigate health and equipment risks, optimizing wellbore plans and production strategies based on predicted hydrogen sulfide levels.

Implementation Method 1

a gas extractor that separates gas from liquid and solid components of the received mud

Methodology Applied
Scientific EffectPhase separation: Phase Change

Implementation Method 2

a shale shaker that removes the mud cuttings from the received mud

Methodology Applied
Scientific EffectVibration: Vibration

Implementation Method 3

a gas chromatography instrument that determines a chromatogram of the gas separated by the gas extractor

Methodology Applied
Scientific EffectChromatography: Chromatography

Data Source

PatentUS12158070B1Real time artificial intelligence prediction of hydrogen sulfide based on mudlogging data
Publication Date: 2024.12.03 SAUDI ARABIAN OIL CO
  • US12158070B1 patent drawing
  • US12158070B1 patent drawing
  • US12158070B1 patent drawing

AI summary

A method for determining the real-time concentration of hydrogen sulfide from mudlogging data using artificial intelligence, during a drilling operation, and adjusting drilling operations accordingly. The method includes obtaining mudlogging data while conducting a drilling operation and processing the mudlogging data with an artificial intelligence (AI) model to determine a predicted quantity of hydrogen sulfide. The method further includes determining a drilling operation condition based on the predicted quantity of hydrogen sulfide and adjusting, based on the determined drilling operation condition, the drilling operation. The method further includes determining a completions plan and a production plan for operating a well based on the predicted quantity of hydrogen sulfide.