Wireline Depth Positioning With PID Tension Control
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Solution Overview
Problem
Current oil and gas well operations rely on manual control of wireline or slickline conveyance systems, which lack precise depth and tension control, risking incidents that compromise personnel, equipment, and well integrity.
Innovation Solution
An automated system utilizing a programmable logic controller (PLC) with PID control loops to manage motor torque, speed, and tension, integrating depth, speed, and tension feedback for precise control of wireline or slickline operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual control of wireline or slickline conveyance systems is used, then operational simplicity is maintained, but depth and tension control precision deteriorates, risking incidents that compromise personnel, equipment, and well integrity
Solution Approach 1:
The patent implements closed-loop feedback control using encoders to measure drum rotation and calculate wireline depth, load cells to measure tension, and PLCs to process this feedback and adjust motor commands accordingly. This feedback mechanism enables precise automatic control of depth and tension while maintaining operational simplicity through automation.
Solution Approach 2:
The patent replaces manual mechanical control with an automated control system comprising PLCs, encoders, load cells, and motor controllers. This substitution of manual operation with automated electronic control systems achieves precise depth and tension control while reducing operational complexity through programmatic management.
2Manufacturing precision
If automated control systems with multiple sensors and control loops are implemented, then depth positioning accuracy improves, but system complexity increases
Solution Approach 1:
The patent divides the control system into separate functional modules: depth control PLC, tension control PLC, motor control PLC, encoders for position feedback, and load cells for tension feedback. This segmentation allows each component to perform its specific function with high precision while the modular structure manages overall system complexity through clear separation of concerns.
Data Source
AI summary
An embodiment includes a system for automatic depth positioning of wire conveyed operations using proportional-integral-derivative (PID) control loops.