Autonomous Wellbore Drone Navigation via Magnetic Casing Patterns
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Solution Overview
Problem
The oil and gas industry faces challenges in efficiently navigating and positioning downhole tools within wellbores due to limitations in wireline cable speed and durability, which can lead to time-consuming operations and potential damage from friction, necessitating a method to minimize or eliminate wireline use while accurately determining tool location and depth.
Innovation Solution
A wellbore positioning system that includes a magnetized casing element with a unique magnetic pattern encoded along its length, allowing an untethered drone to detect and determine its position within the wellbore using ultrasonic transceivers and magnetic field changes, enabling autonomous navigation without the need for wireline cables.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If wireline cable is used to lower and retrieve equipment in the wellbore, then equipment delivery and retrieval are enabled, but operational time increases significantly and cable damage occurs due to friction
Solution Approach 1:
The patent removes the wireline cable from the system entirely, replacing it with an autonomous drone that can navigate the wellbore independently. This extraction eliminates the friction-related damage and time-consuming cable operations while maintaining the core function of equipment delivery and retrieval.
Solution Approach 2:
The patent replaces the mechanical wireline cable system with an autonomous drone using magnetic navigation and wireless communication. The drone uses magnetic patterns encoded on the wellbore casing for positioning instead of mechanical cable feeding, substituting a complex mechanical tethered system with a more efficient autonomous system.
2Productivity
If wireline cable speed is increased to reduce operational time, then productivity improves, but cable damage from friction and forces increases
Solution Approach 1:
The patent removes the wireline cable from the system entirely, replacing it with an autonomous drone that can navigate the wellbore independently. This extraction eliminates the friction-related damage and time-consuming cable operations while maintaining the core function of equipment delivery and retrieval.
Solution Approach 2:
The patent replaces the mechanical wireline cable system with an autonomous drone using magnetic navigation and wireless communication. The drone uses magnetic patterns encoded on the wellbore casing for positioning instead of mechanical cable feeding, substituting a complex mechanical tethered system with a more efficient autonomous system.
3Measurement precision
If wireline cable is used for positioning equipment, then location monitoring is enabled, but the system complexity and time consumption increase
Solution Approach 1:
The patent replaces the mechanical wireline cable system with an autonomous drone using magnetic navigation and wireless communication. The drone uses magnetic patterns encoded on the wellbore casing for positioning instead of mechanical cable feeding, substituting a complex mechanical tethered system with a more efficient autonomous system.
Solution Approach 2:
The autonomous drone performs its own navigation, positioning, and data collection without requiring a wireline cable for tethering or power. The drone independently detects magnetic patterns, determines its location, and transmits data wirelessly, making the system self-sufficient and reducing overall complexity.
4Ease of operation
If wireline cable operations are performed, then equipment deployment is enabled, but debris is generated in the wellbore
Solution Approach 1:
The patent removes the wireline cable from the system entirely, replacing it with an autonomous drone that can navigate the wellbore independently. This extraction eliminates the friction-related damage and time-consuming cable operations while maintaining the core function of equipment delivery and retrieval.
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 solution enables precise and efficient navigation of downhole tools, reducing operational time and minimizing debris in the wellbore, while providing accurate location and velocity data for improved wellbore operations.
Implementation Method 1
A wellbore positioning system may include a magnetized casing element with a unique magnetic pattern encoded along its length
Data Source
AI summary
A wellbore positioning system includes a first wellbore casing element bearing a first magnetic pattern that encodes first information associated with the wellbore or a drone. The first wellbore casing element is configured for placement down-hole in the wellbore. The first wellbore casing element extends along a central axis and defines an axially oriented passage. Also, the system includes an untethered drone configured for relative movement in the passage of the first wellbore casing element. The drone is configured to detect the first magnetic pattern and determine a position of the drone within the wellbore based on the first information.