Blowout Preventer Health Index Prediction via Sensor Analytics

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Solution Overview

Problem

Current systems for monitoring the health and degradation of blowout preventer (BOP) stack components in oil and gas well drilling operations are inadequate, making it difficult to determine when maintenance is needed, which can lead to equipment failure and increased downtime.

Innovation Solution

A monitoring system that includes sensors to collect data on various parameters and a computational platform using predictive analytics to build models, calculate health indices, and predict maintenance needs for BOP stack components, extending their life and reducing operating costs.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If traditional monitoring systems are used for BOP stack components, then the system structure remains simple, but the ability to effectively monitor component health and degradation is insufficient

Engineering Contradiction:
Improvecomponent health monitoring capabilityVSAvoidmonitoring system structure
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The monitoring system is segmented into multiple independent modules: sensors for collecting operational parameters, a computational platform for data processing, and a predictive analytics system for generating maintenance recommendations. This modular structure enables effective health monitoring while maintaining manageable system complexity through clear separation of functions.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

A computational platform acts as an intermediary between the physical BOP stack components and the predictive analytics system. This intermediary processes raw sensor data, applies predictive models, and translates complex data into actionable maintenance insights, bridging the gap between simple sensing and complex decision-making.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Loss of time

If no predictive analytics system is implemented, then the monitoring system remains simple, but the ability to determine maintenance timing is insufficient

Engineering Contradiction:
Improvedowntime between maintenance operationsVSAvoidpredictive analytics system
Core Design Contradiction:
Loss of timeVSDevice complexity

Solution Approach 1:

The predictive analytics system performs preliminary analysis of component degradation trends before actual failure occurs. By continuously monitoring operational parameters and comparing them against predictive models, the system forecasts remaining component life and schedules maintenance proactively, preventing unexpected failures and optimizing maintenance timing.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The system implements a feedback loop where sensor data from BOP stack components continuously informs the predictive analytics model, which then generates maintenance recommendations that are fed back to operators. This closed-loop feedback enables dynamic adjustment of maintenance schedules based on actual component condition rather than fixed intervals.

Inventive Principle:
Principle #23Feedback

3Reliability

If component degradation is not monitored, then the monitoring system remains simple, but equipment failure risk increases

Engineering Contradiction:
Improveequipment failure preventionVSAvoidcomponent degradation detection
Core Design Contradiction:
ReliabilityVSDifficulty of detecting and measuring

Solution Approach 1:

The system replaces traditional mechanical inspection methods with sensor-based electronic monitoring and computational analytics. Sensors continuously measure operational parameters such as pressure, temperature, and actuator position, while the computational platform processes this data to detect degradation patterns that would be difficult or impossible to identify through manual inspection.

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

Solution Approach 2:

The system detects component degradation by monitoring changes in operational parameters over time. By tracking deviations from normal parameter ranges and analyzing trends in parameters such as response time, pressure differential, and actuator position, the system identifies early signs of degradation before they lead to equipment failure.

Inventive Principle:
Principle #35Parameter changes

Data Source

PatentUS10968731B2System and method for monitoring a blowout preventer
Publication Date: 2021.04.06 SCHLUMBERGER TECH CORP
  • US10968731B2 patent drawing
  • US10968731B2 patent drawing
  • US10968731B2 patent drawing

AI summary

A monitoring system includes a processor configured to receive sensor data from one or more sensors positioned about a mineral extraction system, input the sensor data into a model to generate a health index predictive of a future condition of a component of a blowout preventer (BOP) stack assembly of the mineral extraction system, and to provide an output indicative of the future condition of the component of the BOP stack assembly.