FINA - Port Arthur, Texas Refinery.  SigmaFine Economic Findings.

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Presentation transcript:

FINA - Port Arthur, Texas Refinery

 SigmaFine Economic Findings

Presentation Topics Refinery Overview Typical Product Slate Model Overview SigmaFine Yield System Structure Boundary Model Setup Results –Liquid Recovery and Weight Loss –System Events Yield System Comparison Future Model Plans

Refinery Overview –Located in Port Arthur, Texas –180,000 B/D refinery –Typical crude feedstock origin: Mexico Venezuela Middle East U.S. Gulf of Mexico –Constructing world’s largest single-train steam cracker

Typical Product Slate: –Unleaded Gasolines –Diesel/Jet Fuel –Chemicals Feedstocks –Heavy Oils –LPG

Model Overview : Project Start:July 1998 Boundary Model Construction/Testing:9 months Parallel Testing:1 month Model Activation:May 1999 Model Operation:Real Time (5AM to 5AM)

Sigmafine Yield System Structure Data Sources and Input Import Files Sigmafine Reporting and Analysis Import Script TDC Labware PI Data Historian Pumper's Log Manual Entry Meter Data Tank Inventories Marine, Weighed Trucks, Pipelines & Interplant Transactions Lab Data SigmaFine Inventory Yield Accounting Mass Balance Data Reconciliation Measurement Systems Analysis Routine Reporting SQL Server Database Corrected Data Reconciled Data Fina PAR Web Server Technical Analysis: - Refinery level - Unit level FTZ Accounting Non-routine Reporting Diamond Gasoline/Diesel Truck Rack Transactions Future Potential: Input to Process Controls Applications Integrate w/ LP model

Port Arthur Refinery Receipts Intermediates Shipments Fuel / Flaring Boundary Model:

Results: –Improved accuracy calculating/predicting liquid recovery Verify tank information daily for 131 tanks –Tank gauges –Temperatures –API Gravity

SigmaFine implemented as refinery yield model

Results: –Improved ability to detect product downgrades through tank gauge and meter comparisons –Summary: Identified Events: 4 Reduced Product Downgrade:34000 bbls Monetary Savings: 125 K$

Event #1: –Distillate Product System FCCU light cycle oil to #6 Fuel Oil –Intended disposition: light cycle oil tankage –Reduced downgrade by bbls Incident involved a leaking valve in an inactive piping system. Discovered during model reconciliation comparing the light cycle oil tank gauge against product meter. Operations investigated and found valve leaking through.

Event #2: –Distillate Product System Diesel Fuel to #6 Fuel Oil –Intended disposition: diesel tankage –Reduced downgrade by 5000 bbls Incident involved tank to tank transfer of diesel. Discovered during tank gauge verification of the diesel and #6 Fuel Oil tanks comparing tank gauge changes. Operations investigated and discovered a valve open between the two product systems.

Event #3 : –Distillate Product System Diesel Fuel to #6 Fuel Oil –Intended disposition: finished tankage –Reduced downgrade by 7000 bbls Discovered during verification of tank gauge data and comparing product meter information. Operations investigated and discovered a valve open between the two systems.

Event #4: –Vacuum Gas Oil Product System DMO to #6 Fuel Oil –Intended disposition: FCCU feed system –Reduced downgrade by 6000 bbls Incident involved misalignment of product flow off unit. Discovered during model reconciliation comparing tank gauge to #6 Fuel Oil system meter information. Operations investigated and discovered the misalignment.

Yield System Comparison: CategoryPreviousSigmaFine Personnel involved23 Time Required: Single day4-6 hours4-6 hours Weekend 4-6 hours10-12 hours Transaction InformationHand-writtenElectronic Meter to Gauge ComparisonsNoneAvailable Custody Transfer CalculationsInternalExternal Multiple User CapabilityYesNo

Future Model Plans: –Boundary Model: 1. Incorporate new tank and meter information for the steam cracker project. 2. Incorporate new condensate splitter meter information. 3. Develop process for functionality with SAP.

Future Model Plans: –Unit Level Model: 1. Incorporate new meter information for refinery projects. 2. Implement running on a weekly basis (eventually increase frequency).