Innovative Subsea Control Module for Oil Well Blow-Out Preventer Operations
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This project focuses on the design and development of an advanced electronics module for monitoring and controlling a single ram blow-out preventer (BOP) in subsea applications. Key features include solenoid control, continuous monitoring of hydraulic fluid flow and ram position, self-test circuitry, and redundancy. The prototype has been successfully built and tested with Hydril-supplied solenoids. Communication capabilities allow data transmission to the topside computer and integration with other modules, ensuring reliable operation at high pressures of 6700 psi.
Innovative Subsea Control Module for Oil Well Blow-Out Preventer Operations
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Presentation Transcript
HYDRIL SUBSEA CONTROL MODULE FOR OIL WELL BLOW-OUT PREVENTER (BOPs) Team 3B Matt Hewitt – Project Manager Devin Welch – Configuration Manager Paul Jaramillo – Correspondent Nhat Pham – Financial Officer
Project Requirements • Design and build an electronics module to monitor and control the operation of a single ram blow-out preventer (BOP) located sub sea. • Test the module with a set of actual or simulated control system equipment.
Solenoid Control • The electronics module must independently trigger two solenoids when commanded.
Continuous Monitoring • Flow (in GPM) of Hydraulic Fluid • Ram Position via LVDT • These values must be transmitted to the computer on the ship.
Additional Features • Self Test Circuitry • Redundancy • Networkability for single and double ram BOPs • Functional at ambient 6700 psi
Requirements met • Built prototype control module • Tested module with Hydril supplied solenoids • Continuously sampled Flowmeter and LVDT data with A/D chip
Requirement work in progress • Communication with topside computer • Communication with other modules • Incorporate Self Test Circuitry • Incorporate Redundant Circuits • Functionality at 6700 psi
Functional Block Diagram Overview Topside Computer Input Sub sea Sensor Input Sub sea Self-Test Output Control Module Topside Computer Receiver
Functional Block Diagram Inputs to Control Module Hydraulic Flow High Pressure Flow Meter 0 175 GPM Analog Data LVDT Ram Position Measurement Analog Data Power and Control Lines Analog = 52V Digital = 5V Topside Signals and Power
Functional Block Diagram Control Module Flow meter Data Output Data Acquisition and Transmission LVDT Solenoid #1 Coil Output Solenoid Coil Monitoring “Self-Test” Solenoid #2 Coil Output Control Lines Solenoid #1 #1 / #2 Control Logic Solenoid Activation Solenoid Drivers 52V, 1/2A Solenoid #2 ON/OFF
Functional Block Diagram Control Module Outputs Solenoid #1 Control Line Solenoid #1 Solenoid #1 Coil Output Solenoid #2 Control Line Solenoid #2 Solenoid #2 Coil Output Data Transmission Lines Computer Received Output Signals
Digital Circuit Board Data Acquisition Data Out Analog Signal 0-5V A/D Converter Flow meter Control In FPGA Data Out Analog Signal 0-10V A/D Converter LVDT Control In
Solenoid Coil Self-Test DPDT Relay Relay Coil Control Solenoid Driver Power +52V Data Out FPGA FPGA Signal +3.3V Solenoid Coil A/D 0 Control In R 0
FPGA Inputs/Outputs Digital Flow meter Data Flow meter A/D Control Solenoid #1 Control Line Digital LVDT Data LVDT A/D Control Spartan XC3S400 Digital Coil Data Solenoid #2 Control Line Coil A/D Control Topside Computer Control Lines
Solenoid Activation Analog Circuit Board FPGA Control Line #1 Vcc Gnd Solenoid Driver Solenoid #1 Driver Control line FPGA Control Line #2 Vcc Gnd Solenoid Driver Solenoid #2 Driver Control line Vcc=52V
VHDL Structure Two Components: State Machine 16-bit Shift Register Serial In Parallel Out (SIPO)
State Machine Function Table *User Specified Voltage
State Machine Transition State Translation S00 Wait (Initial) S01 Close BOP S10 Open BOP S11 Not Used