Drill Bit Dysfunction Identification via Torsional Behavior Encoding
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Solution Overview
Problem
Drilling dysfunctions such as high-frequency torsional noise, cutting-induced stick-slip, friction-induced stick-slip, pipe-induced stick-slip, and torsional oscillations lead to energy loss and equipment damage in earth drilling, as existing technologies fail to effectively identify and mitigate these issues in real-time.
Innovation Solution
A system with an embedded force measurement device in the drill bit that includes sensors to measure torsional, axial, and rotational forces, which communicates with a torsional behavior detector to identify drilling dysfunctions by fitting measurement data to predetermined behavior curves, allowing for real-time detection and mitigation of torsional dysfunctions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If real-time identification of drilling dysfunctions is implemented, then drilling efficiency is improved, but device complexity increases
Solution Approach 1:
The system segments the complex task of drilling dysfunction identification into distinct functional modules: sensors for data acquisition, a behavior detector for analyzing torsional behavior, and a dysfunction identifier for diagnosing specific issues. This modular segmentation enables real-time monitoring while managing system complexity through organized functional decomposition.
Solution Approach 2:
The system implements continuous feedback by constantly monitoring drilling parameters, comparing them against predetermined behavior curves, and providing real-time identification of dysfunctions. This closed-loop feedback mechanism enables proactive mitigation of drilling issues, improving efficiency without requiring overly complex manual intervention systems.
2Measurement precision
If comprehensive sensor measurement is implemented, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The sensor system is designed with multi-functionality, where a integrated sensor package simultaneously measures multiple drilling parameters including torque, weight on bit, and rotational speed. This universal measurement approach achieves comprehensive monitoring precision without proportionally increasing device complexity, as single sensor assemblies perform multiple measurement functions.
Solution Approach 2:
The system incorporates predetermined behavior curves and diagnostic criteria before drilling operations begin. These pre-programmed reference standards enable immediate comparison with actual measurements, achieving high measurement precision and rapid dysfunction identification without requiring complex real-time analysis algorithms during drilling operations.
Data Source
AI summary
A method comprises acquiring measurements of a force and a rotational velocity experienced by a drill bit while the drill bit is positioned in a wellbore; and identifying, by at least one processor, a type of dysfunction experienced by the drill bit based on a relationship of the measurement of the force and a measurement of the rotational velocity.