Electromagnetic Jarring Tool Actuation in Deviated Wells
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Solution Overview
Problem
Conventional jarring tools are not well-suited for delivering multiple impacts in heavy fluid, high-pressure environments or deviated wells, where gravitational forces can affect their operation.
Innovation Solution
An electromagnetic jarring tool with a magnetic hammer and conductive coils that generate an electromagnetic field to actuate the hammer within a chamber, allowing for controlled upward or downward impacts along the tool string, independent of gravitational orientation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional jarring tools are used in heavy fluid, high-pressure environments or deviated wells, then the tools can deliver impacts in these challenging conditions, but gravitational forces adversely affect their operation and reliability
Solution Approach 1:
The patent replaces the conventional gravity-dependent mechanical jarring mechanism with an electromagnetic actuation system. Electromagnets are used to actuate the hammer mechanism, allowing controlled delivery of impacts independent of gravitational orientation. This substitution enables reliable operation in deviated wells and horizontal configurations where gravity cannot provide consistent downward force.
Solution Approach 2:
The invention changes the fundamental operating parameter from gravity-based mechanical force to electromagnetic force. By using electromagnets to generate the actuating force, the system can deliver impacts in any orientation without being constrained by gravitational direction, thereby maintaining reliability across varying well conditions including heavy fluid, high-pressure environments, and deviated wells.
2Adaptability or versatility
If conventional jarring tools rely on gravitational forces, then they can operate with simpler mechanics, but they cannot deliver controlled impacts in deviated wells or horizontal configurations
Solution Approach 1:
The patent substitutes gravity-dependent mechanical actuation with an electromagnetic actuation system. Electromagnets provide controlled force generation that is independent of well orientation, enabling the tool to deliver impacts in vertical, deviated, and horizontal configurations. This increases adaptability to various well orientations while the electromagnetic control provides precise management of the added mechanical complexity.
Solution Approach 2:
The electromagnetic actuation system provides universal functionality across all well orientations. The same electromagnet-based mechanism can deliver controlled impacts in vertical wells, deviated wells, and horizontal configurations, making the tool universally adaptable to any well orientation without requiring different mechanical designs for different applications.
3Ease of operation
If electromagnetic coils are used to actuate the magnetic hammer, then controlled impacts can be delivered in any orientation, but energy consumption increases
Solution Approach 1:
The electromagnetic actuation system uses periodic or pulsed electromagnetic fields to drive the magnetic hammer. Rather than continuous energy input, the system applies electromagnetic force in controlled pulses to deliver discrete impacts. This periodic action provides precise control over impact timing and delivery while reducing overall energy consumption compared to continuous operation.
Solution Approach 2:
The system changes the energy input parameter from continuous mechanical force to pulsed electromagnetic force. By controlling the duration, frequency, and intensity of electromagnetic pulses, the system achieves precise control over impact delivery while optimizing energy consumption. The electromagnetic coils can be activated only when impact is required, reducing wasted energy in continuous operation.
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 and controlled delivery of impacts in challenging well conditions, such as heavy fluid and high-pressure environments, and deviated wells, without mechanical manipulation from the surface.
Implementation Method 1
at least one conductive coil operable to receive a current and generate an electromagnetic field across at least a portion of the chamber
Implementation Method 2
The magnetic hammer is operable to move toward the second end of the chamber in response to the electromagnetic field
Data Source
AI summary
An electromagnetic jarring tool and related systems and methods provide for the use of an electromagnetic system to generate jarring forces within a wellbore. The electromagnetic jarring tool includes a chamber having a first end and a second end, a magnetic hammer disposed within the chamber, and an electromagnet operable to generate an electromagnetic field across at least a portion of the chamber. The magnetic hammer is operable to move toward the second end of the chamber in response to the electromagnetic field to deliver an impact. One or more electromagnets may be included to enhance operation of the tool, and the tool may be actuated by a surface controller that selectively delivers electrical power or a control signal to the tool to specify a mode of operation of the electromagnetic jarring tool.