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© 2015 BAKER HUGHES INCORPO RATED. ALL R IGHTS RESERVED. TERM S AND CONDIT I ONS O F USE: BY ACCEPTING THIS DOCUMENT, THE RECIP I ENT AGREES THAT THE DO CUM ENT TOGETHER W ITH ALL INFORM ATION I NCLUDED THEREIN IS THE CONFIDENTIAL AND PRO PRIETARY PROPERTY OF BAKER HUGHES INCORPO RATED AND I NCLUDES VALUABLE TRADE SECRETS AND/O R PROPRIETARY INFO RM ATION O F BAKER HUG HES (COLLECTI VELY " I NFORMATIO N") . BAKER HUGHES RETAI NS ALL R IG HTS UNDER COPYRIGHT LAW S AND TRADE SECRET LAW S O F THE UNITED STATES OF AM ERI CA AND OTHER COUNTRIES . THE RECIP IENT FURTHER AGREES THAT THE DO CUM ENT M AY NOT BE D I STRIBUTED, TRANSM ITTED, COPI ED O R REPRODUCED I N W HO LE OR IN PART BY ANY M EANS, ELECTRO NI C , M ECHANI CAL, OR O THERW ISE, W I THOUT THE EXPRESS PRI OR W RITTEN CO NSENT OF BAKER HUGHES, AND M AY NOT BE USED D IRECTLY OR INDIRECTLY IN ANY WAY DETRIM ENTAL TO BAKER HUGHES ’ I NTEREST.
Pipeline PIG Data RecordingFeasibility of a Programmable SOC based Data Recorder.By: Bruce Hewitt
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Outline
■Why Inspect Pipelines■ Pipeline Environment■Magnetic Flux Leakage■ Recorder Functions■Microprocessor Based Implementation■ Programmable System on Chip SOC Implementation
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Why Inline Inspection
■ To Expose hidden Corrosion and Mechanical Damage that is in a pipeline. ■ Repair Prevents Serious Accidents
– Extensive Property Damage– Serious Environmental Damage
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Pipeline Environment-- Pressure-- Navigate Bends at 10km/hr-- Changes in wall thickness-- Valves and Tees
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Pipe Wall
MFL Tool – Backing Bar
Magnet Magnet
Brush Brush
Leakage Flux
Sensor Head
Defect
Principle of Magnetic Flux Leakage
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Recorder Function 1 -- Normalization
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Recorder Function 2 – Misalignment Correction
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Recorder Function 3 -- Block Based Compression
■ Premise – Need “Loss-Less” compression and Corrosion is localized
■ Process Blocks of N samples■ Pass 1 – Calculate histogram of sample variations■ Pass 2 – Encode the samples that have large variations with more bits■ Pass 3 – Encode the samples that have smaller variations with fewer bits
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DSP/Micro Controller Based Implementation
Recorder Processing Functions Recorder Storage
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System on Chip -- SOC
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Custom FPGA Component for Data Recorder
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Custom FPGA Resources
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SOC Based Implementation
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Benefits & Possibilities
■Higher Compliance Tools – Smaller Electronics Package■Inspect Longer Lines – Power needed for Data Processing
reduced by 50% for 36 inch tool■Improve Reliability – Remove 1 level of interconnect■Improve Defect Detection and Characterization – Can
Support higher sample rates■Smaller Traps – Consider a single body tool
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Thank You
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