Wire-Guided Automatic Pay-Off for Tangle-Free Directional Drilling
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Solution Overview
Problem
The manual rewiring and loose state of guide wires during the drilling process in horizontal directional drilling rigs lead to tangling, breakage, and high labor costs, especially under complex geological conditions, affecting drilling accuracy and efficiency.
Innovation Solution
A wire-guided automatic pay-off device installed on a horizontal directional drilling rig, comprising a conductive ring assembly, brush assembly, winding device, and guide device, which maintains the guide wire in a tight state and enables automatic pay-off, reducing manual intervention and joint impacts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If manual pay-off method is used, then device complexity is low, but productivity is low and reliability is low due to tangling and breakage
Solution Approach 1:
The guide wire system performs self-tensioning automatically through the winding device and guide device mechanism, eliminating the need for manual intervention to maintain wire tension and prevent tangling during the drilling process
Solution Approach 2:
The patent replaces manual mechanical pay-off operations with an automated mechanical system consisting of the winding device, guide device, and guide wire assembly that automatically manages wire tension and positioning
2Reliability
If guide wire is kept loose during drilling, then ease of operation is high, but reliability is low due to breakage from mud impact
Solution Approach 1:
The system automatically maintains guide wire tension through the winding device and guide device mechanism, eliminating the need for manual tensioning operations while preventing wire breakage from mud impact
Solution Approach 2:
The guide wire is pre-tensioned and positioned through the guide device before drilling begins, ensuring the wire remains in a tight state throughout the drilling process and is ready to handle mud impact without breaking
3Productivity
If manual rewiring is performed at each drill pipe addition, then device complexity is low, but productivity is low and time is lost
Solution Approach 1:
The guide wire system automatically repositions and re-tensions itself through the winding device and guide device mechanism when drill pipes are added, eliminating the need for manual rewiring operations and reducing construction time
Solution Approach 2:
The guide wire maintains continuous tension and positioning through the automated winding and guide device system, ensuring uninterrupted signal transmission and drilling operation without time loss from manual rewiring between drill pipe additions
Data Source
AI summary
Disclosed are a wire-guided automatic pay-off device and method. The wire-guided automatic pay-off device is installed on a horizontal directional drilling rig and comprises a conductive ring assembly, a brush assembly, a winding device, a guide device and a guide wire. The conductive ring assembly fixed to a main shaft of a carriage assembly rotates together with the main shaft, the brush assembly fixed to a body of the carriage assembly does not rotate with the main shaft, and a conductive end of the brush assembly is in contact with the conductive ring assembly. The guide wire wound on the winding device has one end connected to the conductive ring assembly and the other end passing through the guide device, penetrating into a central hole in a drill pipe from a rear end of the drill pipe.