2. Application of 2-D seismic
interpretation in the reservoir
characterization of Meyal Oil Field of
Upper Indus Basin, Pakistan.

3. INTRODUCTION
Study
Area

4. Upper Indus Basin
Study
Area

5. Stratigraphic column of Potwar Basin

6. Stratigraphic column of Potwar Basin

7. OBJECTIVES
• 2D Seismic Interpretation
– Two way time calculation
– Marking of Reflectors
– Contour map Preparation
– Geo seismic section

8. Methodology
• Data Collection
• Analysis of Collected Data
• Picking of Interested Zone
• 2D seismic interpretation (manually)

9. • The data used for present study is obtained from LMKR by
the permission of DGPC.
• By the analysis of data, zone of interest (reservoir) is marked.
• 2D seismic interpretation of the seismic line is determined by
using different techniques.
• Evaluation and description of different parameters such as
Contour map, Marking of reflectors, pinching of strata.

10. Pinching of Jurassic Sands

21. Geoseismic Sections along 97-MYL-04

22. Geoseismic Sections along 801-MYL-07

23. Conclusion
• The exact depth of top Kamlial formation, Muree formation, Sakesar
formation, Ranikot formation, Lockhart formation, Datta formation , Salt
Range and Basement shield have been demarcated in Meyal-17.
• The reflectors interpreted are the Top Eocene Sakesar formation, Paleocene
Ranikot formation and Jurassic Datta formations.
• Major faults identified on the sections are thrust faults and reverse faults
showing Pop-Up structures, which indicate the compressional tectonics.
• Paleocene Ranikot Formation act as a reservoir while the role of a cap rock is
fulfilled by Eocene Sakesar Formation. This arrangement appear best for the
accumulation of hydrocarbons. While the ''Time'' and ''Depth'' contour maps
of Sakesar Formation, Ranikot Formation and Jurassic Formation were
prepared which show anticlinal structure as value of contours decrease
towards the centre. Therefore drilling at the point lying above the peak of the
anticline is recommended to verify the findings of this study.

24. • Meyal is a proven old oil field, so any structure resembling Meyal on the
available seismic sections should have the potential of oil. To the north-east of
Meyal structure a lead is identified on the seismic line 97-MYL-04. A broad
deeper anticline is clearly present there. On the seismic section 97-MYL-04
only eastern plunge of that anticline is present. It should be shallower towards
the west. If the lead turn into prospect and is drillable, it could be a potential
target for the exploration and production companies. Prospectivity at deeper
level is however questionable; Lopatin’s method and the porosity of fractured
at that depth method must be taken into account.
• Pinching of the Jurassic sands in Meyal seismic section encourages other than
the structural traps. Pinching of beds may be the indication of whole sand
package termination and hence forming a stratigraphic pinch out of Jurassic
Sands. On observing 801-MYL-07 it is evident that Jurassic Sands are thinning
towards the east. Where will they exactly terminate? This cannot be answered
on the basis of available data. The trend on the seismic 801-MYL-07 if
extrapolated shows somewhere 7km-15km to the east of 801-MYL-07.

25. Thank-youThank-you