Drilling Traction Robot Displacement Sensor for Real-Time Velocity Feedback
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Solution Overview
Problem
Current drilling traction robots lack reliable and real-time measurement devices for downhole drilling velocity and displacement, hindering automation and intelligence in drilling processes, particularly in unconventional oil and gas exploration like shale gas development.
Innovation Solution
A displacement measuring device for drilling traction robots, comprising a support bar, hydraulic systems, displacement sensors, magnetic rings, and a computer-based method for calibrating and processing data to provide accurate and instant velocity measurements, enabling direct and immediate feedback for automatic control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If drilling data from drill floor and top drive is used to calculate drilling velocity, then device complexity is reduced and data acquisition is simplified, but measurement precision deteriorates because only indirect calculation is possible
Solution Approach 1:
The patent replaces indirect mechanical data calculation with direct optical/electromagnetic measurement using displacement sensors. The displacement sensor directly measures the position of the drill string or drilling tool, converting mechanical displacement into electrical signals for precise velocity calculation, thereby eliminating the need for complex indirect calculations from drill floor and top drive data.
Solution Approach 2:
The patent introduces a displacement sensor as an intermediary measurement device between the drill string and the measurement system. This sensor acts as a mediator that directly captures displacement information and transmits it to the control system, enabling accurate velocity measurement without relying on indirect calculations from other drilling parameters.
2Ease of operation
If top rotating driving velocity and top driving velocity are used to calculate downhole velocity, then ease of operation is improved, but measurement precision deteriorates due to theoretical calculation errors and time delay
Solution Approach 1:
The patent replaces theoretical mechanical calculation methods with direct electromagnetic/optical sensing. The displacement sensor provides real-time position data that is directly converted into velocity information, eliminating the time delays and accumulation of errors inherent in theoretical calculations based on top drive velocity and damping characteristics.
Solution Approach 2:
The displacement sensor system is self-contained and provides its own measurement capability without requiring external calculation or conversion from other parameters. The sensor directly measures displacement and the system independently calculates velocity from this direct measurement, making the system self-sufficient and eliminating reliance on theoretical models.
3Device complexity
If indirect measurement through surface rotation system data is used, then device complexity is reduced, but loss of information increases because direct and instant drilling displacement and velocity data cannot be obtained
Solution Approach 1:
The displacement sensor serves as a direct intermediary measurement device installed on or near the drill string, providing real-time position data. This direct measurement intermediary eliminates information loss by capturing displacement and velocity data at the source rather than inferring it from surface rotation system data.
Solution Approach 2:
The patent replaces indirect mechanical inference from surface rotation data with direct electromagnetic/optical measurement. The displacement sensor directly converts mechanical displacement into electrical signals, providing instant and accurate drilling displacement and velocity data without information loss.
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
The solution enables simple, stable, and cost-effective measurement of drilling velocity, facilitating instant data feedback and promoting the automation of drilling traction robots, thus enhancing the exploration and development of unconventional oil and gas resources.
Implementation Method 1
a magnetic ring A (9), a magnetic ring B (15)... displacement sensor A (5)... displacement sensor B (11)
Data Source
AI summary
The invention relates to a displacement measuring device and a velocity measuring method of a drilling traction robot. The measuring device comprises a support bar, a stopper, a hydraulic, a piston of the hydraulic, a displacement sensor, a seal baffle, a waveguide, a magnetic ring, and a magnetic ring support plate. The invention can realize instant measurement and instant feedback of the velocity of the drilling traction robot and can provide data reference for automatic drilling of the drilling traction robot.