Petrel is a software platform used in the exploration and production sector of the petroleum industry. It allows the user to interpret seismic data, perform well correlation, build reservoir models, visualize reservoir simulation results, calculate volumes, produce maps and design development strategies to maximize reservoir exploitation. Risk and uncertainty can be assessed throughout the life of the reservoir.Although some other oil servicing companies hire the services of this software, Petrel is developed and built by Schlumberger.

1. PETREL SOFTWERE
LEARNING O BJECTIVE
 Launch petrel
 Data Import and Export and editing input Data
 Base Map
 Seismic sections
 Wells, Well logs, Well tops, Velocity data(from cheak shot), and 3D seismic.
 Well Tie
 Picking interested Horizon
 Structure ( marking Fault ,fault Polygon)
 Mis-Tie
 Two -way time Map
 Velocity maps
 Depth contour map
 Time contour map

2. Launch petrel

3. Data Import and Export and editing
input Data
• Open in 2D ,3D and interpretation window

4. Click on
folder and
select the
new seismic
main folder

5. Right click on
seismic folder
and select
import on
selection….
And load
SEG-Y file.

6. • Seismic data loading in the form of SEG-Y format

7. Base Map:
Shot point location

8. • Wells, Well tops loading
select the new well folder.

11. • Right click on folder and select the new well
tops folder

13. Well tops

14. • Check Shot survey:
• A type borehole seismic data designed to measure the seismic travel
from the surface to a known depth. P-wave velocity of the formation
en-counted in a well bore can be measured directly by lowering a
geophone to each formation of interest, sending out a source of
energy from the surface of the earth and recording the resultant
signal
• From this survey .we will have velocity & depth,we estimate the time
&plot result in Time Depth scale

16. • Synthetic Seismogram
• It is a result of one of many form of forward modeling to predict the seismic
response of the earth. A more narrow definition used by seismic interpretation is
that a synthetic seismogram ,commonly called a synthetic it is direct one –
dimensional model of acoustic energy travelling through the layer of the earth .
• The synthetic seismogram is generated by convolving the reflected derived from
digitized acoustic and density logs with the wavelet derived from seismic data .
• The synthetic seismogram (often called simply the “synthetic”) is the primary
means of obtaining this correlation. Velocity data from the sonic log (and the
density log, if available) are used to create a synthetic seismic trace

17. Synthetic
Seismogram

18. • Well tie:
• seismic line by a well so that seismic events may be correlated with subsurface
(log) information. The planning of well ties must consider the migration of seismic
data where dip is present, so that the desired well tie is achieved properly.

19. Picking interested Horizon
• Picking is a reflected on a seismic section .it involves deciding
what wiggles from trace to trace are from the same reflection

20. • Well head loaded
• Well top :formation top of the well.to determind the top of Horizon