Drilling Telemetry Noise Reduction via Tunable Vibrations
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Solution Overview
Problem
Current drilling technologies face challenges in efficiently communicating downhole sensor data to the surface due to slow data transfer rates, especially as drilling speed increases, leading to potential slowdowns in drilling operations and limitations in data resolution and reliability.
Innovation Solution
A system that uses tunable frequency vibrations generated by an anvil plate and encoder plate mechanism to enhance data communication, allowing for faster drilling and more accurate formation evaluation by modulating vibrations to optimize drilling frequency and reduce static friction, while also employing active noise cancellation techniques to improve signal clarity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If drilling speed is increased to improve productivity, then drilling efficiency improves, but data transfer rate becomes insufficient leading to communication delays
Solution Approach 1:
The patent uses mechanical vibrations generated by the drilling system itself as a communication medium. Sensors detect vibration patterns that encode downhole data, and these vibration signals are transmitted through the drill string to surface receivers. This converts the mechanical energy already present in the drilling system into a dual-purpose tool that both drills and communicates, eliminating data transfer delays while maintaining high drilling speeds.
2Measurement precision
If active noise cancellation is applied to reduce acoustic noise, then signal clarity improves, but system complexity increases
Solution Approach 1:
The system uses the drilling system's own structural components (drill string, drill bit) as both the noise source and the transmission medium. The vibrations that would normally be considered noise are directly utilized as the communication signal carrier. This self-service approach eliminates the need for separate active noise cancellation systems, as the 'noise' is repurposed into useful communication signals, thereby improving signal clarity without adding system complexity.
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 enables faster drilling speeds, improved data transfer rates, and enhanced formation evaluation, reducing the need for slower drilling to gather logging information and minimizing the risk of equipment damage from high heat and vibration.
Implementation Method 1
a first accelerometer for detecting a first acoustical wave generated by the top drive of a drilling rig
Implementation Method 2
An active noise blocking system generates the anti-wave responsive to the detected first acoustical wave and the detected second acoustical wave and applies the anti-wave to the first acoustical wave
Data Source
AI summary
A system and method for controlling the frequency or amplitude of vibrations during drilling of a well. A system for generating mechanical vibrations may generate a control signal to cause two plates to impact one another with a first frequency or amplitude. The frequency or amplitude may be selected to steer the direction of drilling. In addition, a second control signal may be generated to cause the two plates to impact with a second frequency or amplitude to steer the direction of drilling, such as when the wellbore has deviated from the target path of a well plan. The control signals may be associated with one or more geological formations.