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1 GIS DATA IMPROVEMENT Danielle (Hambrick) Price Paul McChesney, Colonial Pipeline Co. May 17, 2018 ILI BASED PIPELINE GIS IMPROVEMENT AND MAINTENANCE
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GIS DATA IMPROVEMENT
Danielle (Hambrick) PricePaul McChesney, Colonial Pipeline Co.
May 17, 2018
ILI BASED PIPELINE GIS IMPROVEMENT AND MAINTENANCE
WHAT’S THE PROBLEM?
➢ Pipeline GIS data comes from a widely variable mix of spatial data with often unknown accuracy
➢ GIS systems were built from as-built records
➢ GIS systems can be inaccurate for a number of reasons
➢ Inconsistent or inaccurate as-builting practices
➢ Inaccurate or missed data collection in the field
➢ Challenges transferring data between the field and the office resulting in incomplete packages for the GIS team to work from
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HOW CAN WE MAKE IT BETTER?
➢ Ensure new data going into the GIS are complete and accurate
➢ Correct the data already in the GIS
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ENSURE NEW DATA GOING INTO THE GIS ARE COMPLETE AND ACCURATE
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➢ Mobile as-built and inspection data collection
➢ Latitude/Longitude instead of only stationing
➢ More reliable and resilient location information
➢ Project Record Management System
➢ Compile, centralize and validate as-built and TVC documentation
➢ Provides visibility and closeout process
CORRECT THE DATA ALREADY IN THE GIS
➢ Leverage information from ILI data
➢ Valves, Casings, Sleeves, Taps, Tees, Flanges, and Welds are identified
➢ IMU/INS based ILI data gives us spatial locations of features
➢ Provide Latitudes and Longitudes along with Station Values
➢ Compare ILI data to GIS data to determine what features need to be added, removed, or edited
➢ Multiple years/runs of ILI data analyzed increasing confidence for decision making
➢ Through linear referencing and spatial adjustment, even non-IMU ILI Data can be leveraged
➢ High Resolution Imagery increases confidence in location accuracy
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SPATIAL ADJUSTMENT
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BEFORE
AFTER
FME WORKBENCH
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➢ Filters by asset type
➢ Creates linear features for Casings and Sleeves
➢ Groups Assets by proximity
➢ Assigns Confidence Value
➢ Preliminary Analysis of ILI data compared to GIS data
➢ Feature Classes for each asset type are created with a defined schema
DATA SCHEMA
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COMPARING ILI DATA TO GIS DATA
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10DECISION TREE
Danielle (Hambrick) Price, Project Manager
QUESTIONSWWW.GLOBALINFORMATIONSYSTEMS.COM
Email: [email protected]
