Stick Slip Detection via Pressure Wave Analysis
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Solution Overview
Problem
Stick slip conditions during drilling operations cause premature failure of drilling components due to the complex interplay of borehole geometries and geological conditions, making it challenging to predict and mitigate these events effectively.
Innovation Solution
A method and system involving pressure measurement devices and data acquisition systems to detect stick slip conditions by analyzing pressure waves within the drilling fluid, using spectral analysis techniques to identify variations that indicate stick slip, and comparing these to thresholds to control drill string progression and alleviate the conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If pressure measurement devices are disposed at a distance from the operating apparatus, then the measurement devices can detect pressure waves generated by stick slip conditions, but the complexity of the measurement and detection system increases
Solution Approach 1:
The patent uses drilling fluid as an intermediary medium to transmit pressure waves from the stick slip occurrence point to the pressure measurement devices. This allows detection at a distance without direct contact with the stick slip interface, resolving the contradiction by enabling precise detection while maintaining system feasibility through the natural fluid transmission medium already present in drilling operations.
2Productivity
If real-time analysis of pressure measurement data is performed to detect stick slip conditions, then operational efficiency is improved, but the complexity of data processing and analysis increases
Solution Approach 1:
The patent implements real-time feedback by continuously analyzing pressure measurement data and comparing it against predetermined thresholds to detect stick slip conditions. This feedback mechanism enables immediate detection and response to stick slip events, improving operational efficiency while keeping the processing logic relatively simple through threshold-based detection rather than complex algorithms.
3Reliability
If the drill string progression is controlled based on pressure data variations, then component failure is reduced, but the complexity of controlling drilling operations increases
Solution Approach 1:
The patent applies preliminary action by detecting stick slip conditions before they cause significant damage through real-time pressure wave monitoring. By identifying stick slip events early and controlling the drill string progression in response, the system prevents component failure while maintaining relatively simple control logic based on the detected pressure variations and predetermined thresholds.
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 detection and mitigation of stick slip conditions, improving drilling performance by reducing component failure and enhancing operational efficiency through controlled adjustments of drilling parameters.
Implementation Method 1
Measuring one or more pressure waves generated by the operating apparatus within the pressure wave transmission medium with the at least one pressure measurement device
Data Source
AI summary
A method for determining stick slip conditions. The method may include disposing an operating apparatus in fluid communication with a pressure wave transmission medium. At least one pressure measurement device may be disposed at least partially within the pressure wave transmission medium and at some distance from the operating apparatus. One or more pressure waves generated by the operating apparatus may be measured within the pressure wave transmission medium with the at least one pressure measurement device and pressure measurement data may be generated therefrom. The pressure measurement data from the at least one pressure measurement device may be transmitted to a data acquisition system. The pressure measurement data may be analyzed to detect one or more stick slip conditions from one or more variations in the pressure measurement data.