Magnetic Safety Valve Latching With a Single Well Control Line
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Solution Overview
Problem
Existing subsurface safety valves (SSSVs) require separate power sources for tubing retrievable safety valves (TRSV) and wireline retrievable safety valves (WLRSV), leading to increased complexity and cost in operations, especially in deepwater and environmentally sensitive wells where servicing and replacement are frequent.
Innovation Solution
A WLRSV design with a first portion including an electromagnetic assembly and a fluid isolation sleeve, a second portion with a magnetic target and bore flow management actuator, and a third portion with a mechanical connecting apparatus, allowing a single primary control line to switch power between TRSV and WLRSV using a switch system, reducing the need for additional control lines.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate power sources are used for TRSV and WLRSV, then each valve can be independently controlled, but the complexity and cost of operations increase
Solution Approach 1:
The electromagnetic assembly is designed to serve dual functions: controlling both the TRSV and WLRSV through a single control line. The system can switch between tubing retrievable and wireline retrievable safety valve operations using the same electromagnetic actuation mechanism, eliminating the need for separate power sources and control lines for each valve type.
2Device complexity
If a single control line is used to switch power between TRSV and WLRSV, then complexity and cost are reduced, but the ability to independently control each valve is limited
Solution Approach 1:
The system employs dynamic switching capability where the single control line can be electronically reconfigured to actuate different valve types as needed. The electromagnetic assembly can dynamically switch between controlling TRSV and WLRSV operations, providing operational flexibility without requiring permanent dedicated control lines for each valve type.
3Reliability
If frequent servicing and replacement are required in deepwater wells, then operational reliability is maintained, but the cost and complexity increase due to separate power sources
Solution Approach 1:
The electromagnetic assembly and single control line system is designed to accommodate both TRSV and WLRSV operations, creating a universal control platform. This reduces installation costs and simplifies operations during frequent servicing and replacement activities in deepwater wells, while maintaining the ability to reliably control either valve type as needed.
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
Simplifies operations by enabling a single control line to manage both TRSV and WLRSV, reducing complexity, cost, and minimizing the need for additional control lines, especially during contingency operations.
Implementation Method 1
the one or more magnetic targets configured to magnetically engage with the electromagnetic assembly when the electromagnetic assembly is in an energized state to axially fix the bore flow management actuator in the first subsequent state
Data Source
AI summary
Provided is a safety valve, a well system, and a method. The safety valve, in one aspect, includes a first portion. The safety valve, according to this aspect, further includes a second portion, the second portion including a bore flow management actuator configured to slide from a first initial state to a first subsequent state to move a valve closure mechanism between a first closed state and a first open state. The safety valve, according to this aspect, further includes an axially fixed magnetic target portion and a third portion, the third portion including a mechanical connecting apparatus having one or more magnetic targets associated therewith, the one or more magnetic targets configured to magnetically engage with the axially fixed magnetic target portion via a magnetic flux to axially fix the bore flow management actuator in the first subsequent state.