Regional Evaluation

Technical Workflow

Process

Generation of Play Component Risk Maps

-Workstation (Petrel, GIS)

-Hand drawn (Transparancy)

-Automatic Extraction (Kriging, Gridding etc)

-Play Component Risk Map Generation

Reservoir Seal

Reservoir Presence

Reservoir Effectiveness

Seal Presence

Seal Effectiveness

Scanning of Transparancy Risk Maps

Exporting of Petrel Risk Maps

Loading of Risk maps to GIS

Georeferencing of Risk Maps in GIS

Multiplication of Risk Maps within GIS

Generation of Final CRS Maps

Trap Charge

Trap Presence Source Presence

Source Quality

Generation/Timing

Migration

Confidence Matrix

Risking Scheme

CR

S / C

CR

SP

lay M

ap

Data Gathering

Public Domain (IHS, Woodmac etc) Company Internal source External Studies

Generation of Table Data Base (Excel, Access etc)

Well Tops

-Well Name

-Field name

-Coordinates

-Well Tops

Reservoir Parameter

-Field Name

-Coordinates

-Formation name

-Play Number

-Subplay (if any)

-Field Average Gross Thickness

-Field Average Net Thickness

-Field Average Porosity

-Field Average Permeability

Well Tests

-Well Name

-Field name

-HC Type

-Flowrates

Georeferencing of

Generation of Data Base

Generation of Property Maps

-Porosity distribution Maps

-Permeability Distribution Maps

-Well Top Depth Maps

-Isopach Maps

-Gross/Net Thickness Maps

-Depositional Environment Code Maps

-Test/Flowrate Maps

- GDE Maps

- Facies Maps

- Property Maps (Poro/Perm etc)

- Seismic Maps

- Structural and Tectonic Maps

- Prospect Maps

- Source Rock Quality Maps

Data

Ga

the

ring &

Pre

para

tion