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

PIData Historian

Pumper's LogManual Entry

Meter Data

TankInventories

Marine,Weighed Trucks,

Pipelines &Interplant

Transactions

Lab Data

SigmaFine

Inventory

Yield Accounting

Mass Balance

Data Reconciliation

MeasurementSystemsAnalysis

RoutineReporting

SQL ServerDatabase

Corrected DataReconciled Data

Fina PARWeb Server

Technical Analysis: - Refinery level

- Unit level

FTZ Accounting

Non-routineReporting

DiamondGasoline/Diesel

Truck RackTransactions

Future Potential:Input to Process

Controls Applications

Integrate w/ LP model

Port Arthur Refinery

Rec

eipt

s

Intermediates

Shipm

entsFuel / Flaring

• Boundary Model:

• Results:

– Improved accuracy calculating/predicting liquid recovery

• Verify tank information daily for 131

tanks

–Tank gauges

–Temperatures

–API Gravity

Liquid Recovery, Vol %

Month

Vol

%

SigmaFine implemented as refinery yield model 5-1-99

Weight Loss, Wt %

-1

-0.5

0

0.5

1

1.5

2

Month

Wt %

SigmaFine implemented as refinery yield model 5-1-99

• 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 16000 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:

Category Previous SigmaFine

Personnel involved 2 3Time Required: Single day 4-6 hours 4-6 hours Weekend 4-6 hours 10-12 hours

Transaction Information Hand-written ElectronicMeter to Gauge Comparisons None AvailableCustody Transfer Calculations Internal External

Multiple User Capability Yes No

• 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).