Ferromagnetic Fluid Temporary Wellbore Barrier
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Solution Overview
Problem
Current methods for zonal isolation in wellbores, such as using mechanical devices, are costly, time-consuming, and difficult to remove, and cannot effectively create barriers within both tubing strings and annuli.
Innovation Solution
A ferromagnetic fluid is used to create a temporary barrier within a wellbore by being retained via a magnetic field, allowing for zonal isolation without the need for mechanical devices and enabling easier removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If mechanical devices are used for zonal isolation, then reliable barriers can be created, but installation is costly and time-consuming
Solution Approach 1:
The patent replaces mechanical barrier devices with a magnetic field-based system. A magnetic barrier is created using ferromagnetic particles suspended in fluid that are held in place by a magnetic field generated by a magnetic generator, eliminating the need for mechanical insertion and removal devices
Solution Approach 2:
The patent changes the state of the barrier from solid mechanical structures to a controllable magnetic field configuration. The magnetic field strength can be adjusted to create or dissolve the barrier as needed, providing rapid deployment and removal capabilities
2Reliability
If mechanical devices are used for zonal isolation, then barriers can be created, but removal is difficult
Solution Approach 1:
The patent replaces mechanical barrier devices with a magnetic field-based system. A magnetic barrier is created using ferromagnetic particles suspended in fluid that are held in place by a magnetic field generated by a magnetic generator, eliminating the need for mechanical insertion and removal devices
Solution Approach 2:
The patent creates a dynamic barrier system where the magnetic field can be activated to form the barrier and deactivated to remove it. This dynamic control allows the barrier to be easily deployed and removed on demand without physical manipulation
3Adaptability or versatility
If mechanical devices are used for zonal isolation, then barriers can be created in tubing strings, but they cannot effectively create barriers in annuli
Solution Approach 1:
The patent creates a universal barrier system that can be applied in multiple wellbore configurations. The magnetic barrier can be formed in tubing strings, annuli between tubing and casing, or other wellbore geometries by simply positioning the magnetic generator appropriately, providing multi-functional capability
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 method reduces installation time, eliminates the need for mechanical devices, and allows for effective zonal isolation in both tubing strings and annuli, with the temporary barrier being easily removable when no longer needed.
Implementation Method 1
A ferromagnetic fluid is used to create a temporary barrier within a wellbore by being retained via a magnetic field
Implementation Method 2
Temporary wellbore barrier using ferromagnetic fluid
Data Source
AI summary
A ferromagnetic fluid can be used to provide a temporary barrier in a wellbore. A magnetic sub can generate an electromagnetic field within the wellbore. The ferromagnetic fluid is retained at a desired location within the wellbore by the electromagnetic field. Ferromagnetic particles in the fluid can clump together or settle to form the temporary barrier. A zonal isolation fluid such as a metallic fluid, a cement composition, or a curable resin composition can be introduced on top of the temporary barrier. The zonal isolation fluid can solidify to form a permanent or semi-permanent barrier to provide zonal isolation of different zones of the subterranean formation.