Wireless-Activated Sealing Plug for Flexible Wellbore Removal
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Solution Overview
Problem
Existing methods for removing and reinserting sealing plugs in oil and gas recovery operations are either expensive and labor-intensive or limited by predetermined removal times, lacking a simple and inexpensive solution for indeterminate removal.
Innovation Solution
A sealing plug design featuring a detonation cord and initiator system, activated by a wireless signal, which allows for the plug to be removed and reinserted at any time using a conventional work string and actuator, with optional consumable components that burn away upon activation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a timing device with explosive is implanted in the plug to actuate removal after predetermined time, then the plug can be removed automatically, but the operator cannot extend the life of the plug beyond the predetermined time
Solution Approach 1:
The plug incorporates a dynamic timing mechanism where a timer can be reset multiple times, allowing the removal time to be extended or adjusted based on operational needs. This transforms the static predetermined time into a flexible, adaptable parameter that can be modified dynamically.
Solution Approach 2:
The system allows changing the time parameter by resetting the timer multiple times. This enables the removal timing to be adjusted from a fixed value to a variable parameter that can be extended or modified according to operational requirements.
2Ease of operation
If a rig is used to drill-out or pull the sealing plug from the well, then the plug can be removed, but the process is expensive and labor intensive
Solution Approach 1:
The plug incorporates its own removal mechanism through a timer and explosive charge that are part of the plug itself. This self-contained system eliminates the need for external sophisticated drilling rigs or complex pulling equipment, simplifying the removal process.
Solution Approach 2:
The patent replaces complex mechanical removal systems (drilling rigs, pulling equipment) with a simpler chemical mechanism (explosive charge) that is already integrated into the plug, thereby reducing equipment complexity and cost.
3Reliability
If a sealing plug is inserted to prevent production fluid flow, then the well is sealed, but the plug must be removed for replacement or repair of the closure device
Solution Approach 1:
The plug is pre-equipped with a timer and explosive charge during manufacturing, so that when removal is needed, the operator simply needs to reset the timer and wait for the predetermined time. This preliminary preparation eliminates the need for complex removal equipment and simplifies the overall 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 the sealing and subsequent removal of the plug in a simple and cost-effective manner, allowing for flexible operation without the need for sophisticated equipment or predetermined timelines.
Implementation Method 1
A sealing plug design featuring a detonation cord and initiator system, activated by a wireless signal
Implementation Method 2
optional consumable components that burn away upon activation
Data Source
AI summary
A method for removing a sealing plug from a casing or a wellbore according to which a sealing plug is adapted to expand into engagement with the casing or the wellbore. A wireless signal is sent to the plug to cause the plug to lose its structural integrity and fall to the bottom of the wellbore.