Self-Powered Flow Modulator for Drilling Data Transmission
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing oil and gas well drilling systems face challenges with complex and costly power supply for measurement while drilling techniques, as battery-powered or turbine-powered flow modulators are limited in power and increase system complexity.
Innovation Solution
A self-powering flow modulator with a rotor and stator design that generates power through alternation when coupled with an alternator, allowing for encoded acoustic signal transmission without external power sources, using a braking system to control rotational speed and modulate frequencies for data encoding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a battery-powered flow modulator is used, then the system can generate acoustic signals for measurement while drilling, but the power supply is limited and requires periodic replacement
Solution Approach 1:
The flow modulator is designed to be self-powered by the drilling fluid flow itself. The rotor element rotates freely as drilling fluid passes through, driving an alternator to generate electrical power for the sensors and encoder, eliminating the need for external battery power sources and periodic replacements
2Reliability
If a turbine-powered flow modulator is used, then continuous power supply is achieved, but the system complexity and capital costs increase
Solution Approach 1:
The system uses the kinetic energy of the drilling fluid flow to rotate the rotor element, which directly drives the alternator. This self-service approach eliminates the need for complex turbine mechanisms, external power sources, and extensive support infrastructure, significantly reducing system complexity while maintaining continuous power supply
Solution Approach 2:
The invention extracts the power generation function directly from the flowing drilling fluid itself, rather than requiring a separate turbine system. By taking out the complex turbine mechanism and replacing it with a simple rotor-alternator assembly powered by fluid flow, the system achieves continuous power with reduced complexity
3Power
If a rotor element is allowed to freely rotate, then the flow modulator can generate power, but the rotational speed control becomes challenging for accurate signal encoding
Solution Approach 1:
The system incorporates a braking system that receives feedback from the encoder about the rotor's rotational position and speed. The braking system continuously adjusts the rotor's rotational speed to maintain optimal encoding frequencies, ensuring accurate signal encoding while the rotor remains self-powered by drilling fluid flow
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
Enables reliable, self-sustaining power for drilling system components and enhanced signal strength for accurate data transmission through the drilling fluid, reducing system complexity and costs.
Implementation Method 1
A self-powering flow modulator with a rotor and stator design that generates power through alternation when coupled with an alternator
Implementation Method 2
A braking system is in communication with the encoder, and the braking system is configured to selectively decrease a rotational speed of the rotor element based on the modulation signal
Implementation Method 3
an encoded acoustic signal is emitted from the flow modulator through the drilling fluid
Data Source
AI summary
A drilling system including a sensor configured to monitor at least one drilling parameter, and configured to generate a signal based on the at least one drilling parameter. An encoder is in communication with the sensor, and the encoder is configured to convert the signal into a modulation signal. A flow modulator is configured to channel drilling fluid therethrough. The flow modulator includes at least one stator element and a rotor element configured to freely rotate relative to the at least one stator element as the drilling fluid flows past the rotor element. A braking system is in communication with the encoder, and the braking system is configured to selectively decrease a rotational speed of the rotor element based on the modulation signal such that an encoded acoustic signal is emitted from the flow modulator through the drilling fluid.