Drilling Equipment Resonance Speed Avoidance
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Solution Overview
Problem
Drilling equipment in wellbore operations often experiences vibrations due to resonance, leading to mechanical stresses, wear, and potential failures, which can result in economic losses and delays.
Innovation Solution
A system that determines operating parameters for wellbore operations by analyzing resonance speeds of drilling equipment, using a computing device to generate plots that identify resonance speed points and a stable region of operation, thereby selecting parameters that avoid resonance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If drilling equipment operates at high speeds to increase productivity, then drilling efficiency improves, but the equipment may enter resonance conditions causing vibrations and mechanical failures
Solution Approach 1:
The system performs preliminary determination of resonance speeds for the drilling equipment before actual drilling operations begin. By calculating and identifying critical resonance speeds in advance, the system creates a lookup table or database of unsafe operating speeds. This preliminary action allows operators to plan drilling parameters that avoid resonance conditions entirely, preventing vibrations and mechanical failures before they can occur during high-speed drilling operations.
Solution Approach 2:
The system continuously monitors actual drilling operations and compares real-time operating speeds against the predetermined resonance speed database. When the system detects that current operating parameters approach resonance conditions, it provides feedback to automatically adjust drilling speeds or other parameters to stay within safe operating ranges. This closed-loop feedback mechanism maintains both high productivity and equipment reliability by dynamically avoiding resonance zones.
2Reliability
If drilling parameters are carefully controlled to avoid resonance speeds, then equipment wear and failures are reduced, but operational complexity increases due to parameter determination and monitoring requirements
Solution Approach 1:
The system automatically determines resonance speeds based on equipment specifications and operating conditions without requiring manual calculation or expert intervention. The control system performs the complex parameter determination, resonance speed calculation, and safe operating range identification autonomously. Operators simply need to input basic equipment parameters, and the system self-generates the resonance avoidance guidelines and automatically adjusts operating parameters, thereby reducing operational complexity while maintaining high reliability.
Solution Approach 2:
The system transforms the complex problem of resonance avoidance by changing the operational parameters from continuous variable control to discrete category selection. Instead of requiring operators to manually control speeds within continuous ranges, the system categorizes operating conditions and provides discrete safe speed recommendations from predetermined sets. This parameter transformation simplifies the operational interface and decision-making process while effectively avoiding resonance conditions.
3Object-affected harmful factors
If resonance speeds are determined and avoided through computational analysis, then vibrations and mechanical stresses are reduced, but additional time is required for parameter determination and plot generation
Solution Approach 1:
The system performs computational analysis of resonance speeds and generates operating parameter recommendations in advance, before actual drilling operations begin. By calculating resonance speeds, generating avoidance plots, and determining safe operating ranges during the planning phase, the system eliminates the need for time-consuming real-time computations during drilling. This preliminary computational action reduces vibrations and mechanical stresses without causing time loss during critical drilling operations.
Solution Approach 2:
The system performs more comprehensive computational analysis than strictly necessary by generating detailed plots and considering multiple operating scenarios. This excessive action includes creating visual representations of resonance zones, analyzing various drilling conditions, and providing extensive parameter recommendations. While this appears to increase time investment, the comprehensive nature of the analysis ensures that all potential resonance issues are addressed upfront, preventing time loss and operational disruptions during actual drilling.
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
This approach reduces the likelihood of operating at resonance conditions, leading to less wear and tear on equipment, lower operational costs, and reduced risk of drilling system malfunctions.
Implementation Method 1
A mechanical system can be under mechanical resonance, or at a resonance speed, when a frequency of operation of equipment, such as drilling machinery, equals a natural frequency of the system.
Implementation Method 2
Drilling equipment may be affected by vibrations during a drilling operation, which may cause the drilling equipment to malfunction or otherwise perform sub-optimally.
Data Source
AI summary
Drilling parameters for a wellbore operation can be determined based on resonance speeds. For example, a system can receive real-time data for a drilling operation that is concurrently occurring with receiving the real-time data. The system can determine, for a drilling depth, a rotations-per-minute (RPM) value corresponding to a resonance speed based on a weight-on-bit (WOB) value and the real-time data. The system can generate a plot of the WOB value and the RPM value corresponding to the resonance speed. The system can determine drilling parameters for the drilling operation based on the plot. The drilling parameters can exclude, for the WOB value, the RPM value corresponding to the resonance speed.