Hydraulic BOP Actuation Testing with Valve Isolation and Sensors
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Solution Overview
Problem
Testing and maintaining the reliability and fault-tolerance of hydraulic actuation systems in blowout preventers is challenging due to the need for full actuation, which is time- and cost-intensive, and poses safety risks if not properly managed.
Innovation Solution
The implementation of electrically-actuated valve assemblies and redundant sensors to control fluid communication, allowing for the testing of hydraulic actuation components without full actuation, and detecting faults such as loss of fluid or electrical communication, enabling the system to actuate the blowout preventer based on sensor data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional full actuation testing is performed on BOP systems, then reliability and fault-tolerance are improved, but time consumption and operational complexity increase significantly
Solution Approach 1:
The hydraulic system is divided into multiple testable segments through the introduction of isolation valves and test manifolds. This allows individual components (pumps, valves, actuators) to be tested independently without requiring full system actuation, thereby reducing testing time while maintaining reliability assessment capability
Solution Approach 2:
A test manifold is introduced as an intermediary device between the hydraulic power unit and the BOP actuators. This manifold provides multiple test ports and isolation valves that enable controlled testing of individual system components without requiring complete system disassembly or full actuation, thus reducing operational complexity and time
2Reliability
If traditional full actuation testing is performed on BOP systems, then reliability and fault-tolerance are improved, but operational complexity and resource requirements increase
Solution Approach 1:
The hydraulic system is divided into multiple testable segments through the introduction of isolation valves and test manifolds. This allows individual components (pumps, valves, actuators) to be tested independently without requiring full system actuation, thereby reducing testing time while maintaining reliability assessment capability
Solution Approach 2:
The test manifold is pre-configured with isolation valves and test ports before actual testing begins. This preliminary setup allows for systematic isolation and testing of individual components without requiring complex real-time decision-making or system reconfiguration during testing, thus reducing operational complexity
3Reliability
If traditional full actuation testing is performed on BOP systems, then system reliability is improved, but safety risks increase due to potential uncontrolled actuation
Solution Approach 1:
The test manifold incorporates isolation valves that can be closed beforehand to prevent uncontrolled hydraulic fluid flow to the actuators. This preliminary isolation acts as a safety cushion, ensuring that even if testing goes awry, the isolated valves prevent catastrophic uncontrolled actuation of the BOP system
Solution Approach 2:
The test manifold serves as an intermediary safety layer between the hydraulic power unit and the BOP actuators. It provides controlled test ports and isolation mechanisms that allow testing to proceed while preventing direct, uncontrolled actuation of the safety-critical BOP devices, thus mitigating safety risks
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 allows for efficient testing and increased fault-tolerance of hydraulic actuation systems, reducing the probability of failure when needed and enhancing safety by enabling component testing without full actuation, thus improving system reliability and reducing maintenance costs.
Implementation Method 1
a pressure source configured to provide fluid to the valve assemblies
Data Source
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AI summary
This disclosure includes systems and methods for actuating hydraulically-actuated devices.