1. PETREL INTRODUCTION G&G
SCHLUMBERGER

2. Objective Data Interpretation and Analysis using Petrel
– 2D Seismic data visualization and interpretation
– Interpretation of structure (e.g. faults)
– Stratigraphic correlation
– Velocity modeling
Materials (Courtesy: 2011 IBA team University of Alabama)
13,385 km2 study area
15 2-D time migrated seismic lines (1981 vintage)
7 wells (2 TD in basement)
Well seismic ties >32 km

3. Petrel Key Benefits
3D visualization
Well correlation
Classification and Estimation (Artificial Neural Net)
Creation of synthetic seismograms
Seismic attributes
Geobody Interpretation
2D & 3D seismic interpretation and modeling
Seismic volume rendering and extraction
3D mapping
3D grid modeling for geology and reservoir simulation
Velocity Modeling (Domain Conversion)
Well log upscaling
Facies Modeling
Petrophysical Modeling
Data Analysis
Uncertainty Analysis
Optimization
Workflow editor
Fracture Modeling
Volume Calculation
3D well design
Streamline simulation
ECLIPSE Simulation
Simulation post-processing
Remote Simulation Run submission
Plotting

5. Explorer Panes

6. Explorer Panes

7. Project Coordinate System
File  New Project

8. Select Project Coordinate System
Helpful website to get an overview on Geodetic Datum

9. Import Seismic Data

10. Import Seismic Data

11. Import Base Map
Bitmaps (bmp, jpg, tiff) can be imported and visualized in Map Window
Save a map from Google Earth
Insert new folder in the input pane  Rename as map  Right click  Import on Selection
Right click on the image Settings Settings input Lat-Long data

12. Import Well Logs

13. Import Well Logs (3 steps)
1. Well head
An ASCII file (EXCEL file saved as .txt-tab dilimited) must be created with following required attributes
Well Name
X coordinate
Y coordinate
Kelly Bushing (Elevation datum)
Bottom Depth
TD (True vertical Depth)

14. Depth Reference/Depth Datum
Objective Q/A
Search “Schlumberger Oilfield Glossary” in Google
website :
Search for following terminologies
a. Depth Reference or Depth Datum
b. Kelly Bushing
c. Rig Floor
d. Measured Depth
e. True Vertical Depth
Figure Courtesy

16. Import Well path/deviation

17. Import Well Logs

18. Seismic Data Visualization
Right click on seismic line 
Create Interpretation Window
The seismic interpretation window gives you a classic 2D view of the seismic data. Inline, crossline, composite lines and any type of random lines, can be displayed in the interpretation window. All interpretation tools are available in this window and the view can be zoomed, stretched and squeezed in either direction.

19. Seismic Data Visualization: Composite Lines
<--Start new composite line to draw more than one composite lines

20. Seismic Data Visualization: Composite Lines
1. Check following seismic lines
1981 D-81_Amplitude, 1981 B-81_Amplitude, 1981 A-81_Amplitude,
_Amplitude, _Amplitude
2. Select orthogonal view
3. Select composite section
4. Select the lines to be added into the composite section (become bold white), double click when you are done with adding lines
5. Composite folder will be created automatically in the input pane 2 3 4 5

21. Seismic Data Visualization: Convert to 2D seismic line

22. Seismic Data Interpretation

23. Horizon picking
Right click on _Amplitudes  Create interpretation window
Insert  New folder 
Right click
Insert seismic horizon
New horizon will be added “Seisimic Horizon 1” and be activated (bold) 
Click on  choose from the following options
Interpret Grid Horizons [H]
Seeded 3D autotracking [Shift +A]
Guided autotracking [G]
Manual interpretation [U]
Seeded 2D autotracking [A]

25. Fault picking Two ways to interpret faults:
Classical interpretation (drawing fault segments) in the seismic interpretation
- flexibility of traditional interpretation
- clarity of fault planes triangulated in 3D
Fault modeling directly on the seismic in 3D process
- ready for gridding as soon as the interpretation is complete.
- interpreter is forced to solve problems regarding fault hierarchy and connections
- no need for reinterpretation before fault modeling