Pulse Power Drill String Data Encoding via Electrical Discharge
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Pulse power drilling operations face challenges in communication due to high electrical power levels causing fluctuations in electric fields and mechanical oscillations, leading to inefficient data transmission from downhole components, with conventional methods resulting in low data communication rates and potential data loss.
Innovation Solution
Modulating periodic electrical discharges for both drilling and communication purposes, where discharge parameters such as timing, frequency, phase, and amplitude are controlled to encode and transmit data, eliminating the need for additional communication systems and reducing power-intensive components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If high electrical power is transmitted along the pulse power drill string for drilling operations, then drilling effectiveness is improved, but communication from downhole components is inhibited due to electric field fluctuations and mechanical oscillations
Solution Approach 1:
The patent combines drilling and communication functions into a single integrated system. The same pulse power drill string that delivers electrical power for drilling also transmits communication signals. The controller modulates the electrical discharge parameters (timing, frequency, phase, amplitude) to encode data, allowing the drilling system to simultaneously perform both drilling and communication without requiring separate systems
Solution Approach 2:
The pulse power drill string is designed with multi-functionality, serving both as a power transmission medium for drilling and as a communication channel. The electrical discharge system used for drilling is also utilized for data transmission by modulating its parameters, eliminating the need for dedicated communication infrastructure in the harsh downhole environment
2Device complexity
If conventional communication methods are used during pulse power drilling, then communication infrastructure is simple, but data communication rates are low and data loss occurs
Solution Approach 1:
The communication system uses dynamic modulation of electrical discharge parameters including timing, frequency, phase, and amplitude. This dynamic control allows the system to encode multiple bits of information per discharge cycle, significantly increasing the data communication rate compared to static or simple on/off signaling methods
Solution Approach 2:
The system changes multiple parameters of the electrical discharge simultaneously (timing intervals, frequency modulation, phase shifts, amplitude variations) to encode communication data. This multi-parameter modulation approach enables high-rate data transmission through the existing pulse power system without requiring additional infrastructure
3Reliability
If separate communication systems are added to pulse power drill string, then communication capability is improved, but device complexity and maintenance costs increase
Solution Approach 1:
Instead of adding separate communication systems, the patent merges communication functionality into the existing pulse power drill string. The controller that manages electrical discharges for drilling also modulates these same discharges to carry communication signals, eliminating redundant components and reducing overall system complexity
Solution Approach 2:
The pulse power drill string components are designed to perform multiple functions: the electrical discharge system serves both drilling and communication purposes. This multi-functionality reduces the number of separate systems required, lowering complexity and maintenance requirements while maintaining robust communication capability in the harsh downhole environment
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 enhances data communication rates, reduces maintenance costs, and allows for extended operation times by utilizing the drilling process to transmit data efficiently, maximizing the value of downhole sensor data and minimizing data loss.
Implementation Method 1
periodic pulsing of an electrical discharge into the subsurface formation
Implementation Method 2
fluctuations in electric fields
Implementation Method 3
mechanical oscillations
Implementation Method 4
pulse power drilling operations can cause vibrations
Data Source
AI summary
A pulse power drilling system includes a pulse power drill string to be positioned in a borehole formed in a subsurface formation. The pulse power drill string is to drill the borehole based on periodic pulsing of an electrical discharge into the subsurface formation. The pulse power drill string includes a generator to generate electrical power, an electrode to emit the electrical discharge out to the subsurface formation based on the electrical power, and a controller communicatively coupled to the generator and the electrode. The controller is to control at least one discharge parameter of the electrical discharge to encode a data communication within the electrical discharge.