Wireline Insert Safety Valve Inductive Power Transmission
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Solution Overview
Problem
The use of subsurface safety valves in the oil and gas industry that rely on electrical power poses challenges in transmitting power to wireline insert safety valves due to corrosive and debris-filled downhole environments, which complicates electrical connections and reliability.
Innovation Solution
The implementation of inductive charging coils within sealed electronic compartments of both tubing-retrievable and wireline-run safety valves allows for the transmission of electrical power without exposed metallic contacts, using inductive coupling to energize the wireline insert safety valve and a wireless signal to control its operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If electrical contacts are used to transmit power to the wireline insert safety valve, then electrical power transmission is achieved, but the exposed metallic contacts become vulnerable to corrosion and debris accumulation in the downhole environment
Solution Approach 1:
The patent replaces the mechanical electrical contact system with an electromagnetic induction system. The transmission line includes an induction charging coil that transfers electrical energy wirelessly to a corresponding coil in the safety valve actuator, eliminating exposed metallic contacts while maintaining reliable power transmission through electromagnetic coupling.
Solution Approach 2:
The patent introduces an electromagnetic field as an intermediary between the power source and the safety valve actuator. The induction charging coil generates an electromagnetic field that couples with the receiver coil in the actuator, serving as a non-contact intermediary that transfers energy without requiring direct electrical contact, thus protecting against corrosion and debris.
2Power
If hydraulic power transmission is used for the wireline insert safety valve, then power transmission is achieved, but there is no mechanism for transmitting hydraulic power to the electrically actuated valve
Solution Approach 1:
The patent replaces hydraulic power transmission with electrical power transmission through electromagnetic induction. The induction charging coil receives electrical energy from the surface and transfers it wirelessly to the safety valve actuator, enabling electrical actuation without requiring hydraulic power transmission mechanisms.
Solution Approach 2:
The patent changes the power transmission medium from hydraulic fluid to electrical energy. By converting the actuation system to electrical power delivery through induction, the system becomes adaptable to both electrical and hydraulic control modes, with the induction mechanism providing the primary electrical power transmission 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 solution ensures reliable and corrosion-resistant power delivery to electrically actuated safety valves, maintaining functionality even in harsh downhole conditions and providing a fail-safe mechanism for fluid flow control.
Implementation Method 1
inductive charging is used to deliver actuating power from a TRSV to a WLSV
Data Source
AI summary
Methods and devices for utilizing an electrically-actuated wireline insert safety valve (WLSV) within a wellbore. Power is delivered to an electrically actuated WLSV to actuate the WLSV via inductive charging and without the use of wired contact.