Borepath Analyzer for Horizontal Directional Drilling Interference
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Solution Overview
Problem
Horizontal directional drilling operations face interference issues due to external signals at specific frequencies, disrupting communication between underground beacons and surface receivers, which hinders accurate tracking and steering of the drill bit along the desired borepath.
Innovation Solution
A method and system that analyze interference at multiple frequencies along the borepath to determine a preferred frequency for communication, allowing the beacon to emit signals at the least interfered frequency, and a tracker with antennas and a processor to detect and process these signals for precise location determination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single frequency is used for beacon communication, then the communication system is simple, but external interference at that frequency disrupts tracking accuracy
Solution Approach 1:
The system changes the frequency parameter dynamically by analyzing interference levels at multiple frequencies and selecting the optimal frequency for communication, thereby maintaining tracking accuracy while managing system complexity
Solution Approach 2:
The beacon and tracker switch between different frequencies dynamically based on interference conditions, moving from a static single-frequency system to a dynamic multi-frequency system that adapts to environmental conditions
2Reliability
If multiple frequencies are analyzed to find the least interfered frequency, then communication reliability improves, but the system complexity and measurement time increase
Solution Approach 1:
The system performs preliminary frequency analysis before drilling operations begin, identifying the least interfered frequency in advance, which reduces real-time complexity while maintaining communication reliability
Solution Approach 2:
The beacon and tracker automatically perform frequency analysis and selection without requiring external intervention, reducing operational complexity while improving communication reliability
3Measurement precision
If frequency analysis is performed at multiple locations along the borepath, then the preferred frequency selection improves, but the time and resources required for setup increase
Solution Approach 1:
The system performs frequency analysis at multiple locations along the borepath to ensure accurate frequency selection, accepting the additional setup time as necessary for operational reliability during 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
Enhances communication efficiency between the beacon and tracker, reducing interference and enabling accurate tracking and steering of the drill bit, thereby improving the accuracy and efficiency of horizontal drilling operations.
Implementation Method 1
The tracker comprises a first antenna to detect the beacon signal
Data Source
AI summary
A tracker used to analyze a desired borepath prior to horizontal directional drilling operations. The tracker analyzes an amount of interference present at a plurality of different frequencies at multiple locations along the borepath and maps a plot of the interference at the different frequencies. The lower the point on the plot, the less interference present at that frequency at the location analyzed. The tracker summarizes the overall interference along the desired borepath for the different frequencies analyzed and will recommend a preferred frequency. An operator may program the beacon prior to boring operations to emit a beacon signal at the preferred frequency. The operator may also tune the tracker to receive the preferred frequency. The tracker and beacon may then communicate during boring operations at the preferred frequency in order to detect the position of the beacon underground relative to the tracker.