2D SEISMIC DATA INTERPRETATION AND PETROPHYSICAL ANALYSIS OF.final.pptx

Seismic data interpretation

1. 2D SEISMIC DATA INTERPRETATION AND PETROPHYSICAL ANALYSIS OF NANDPUR GAS FIELD MIDDLE INDUS BASIN, PAKISTAN MISBAH AHMAD SUPERVISED BY: DR UROOJ SHAKIR DEPATMENT OF EARTH AND ENVIRONMENTAL SCIENCES BAHRIA UNIVERSITY, ISLAMABAD

2. Contents

3. Introduction to study area

4. Objectives Delineation of subsurface structure with the help of Seismic Data Interpretation. Hydrocarbon potential evaluation based on Petrophysical analysis of Nandpur-02 well.

5. Tectonic map of Pakistan

6. Stratigraphical Coulmn

7. Borehole Stratigraphy of Nandpur-02 Formations Ages Formation Tops Thickness (m) Petroleum play NAGRI Miocene 623 CHINJI Miocene 623 722 SAKESAR Eocene 1345 66 NAMMAL Eocene 1411 181 DUNGHAN Paleocene 1592 34 RANIKOT Paleocene 1626 43 Seal SUJHANDA Paleocene 1669 16 LUMSHIWAL Cretaceous 1685 110 Reservoir Rock CHICHALI Cretaceous 1795 57 Seal Rock SAMANA SUK Jurassic 1852 134 Reservoir Rock SHINWARI Jurassic 1986 108 DATTA Jurassic 2094 28 Source Rock KINGRIALI Triassic 2122 4

8. Data Set Sr no Line name Line type Line Orientation Well name Well logs 1 GO-845-KBR-38 Dip line NW-SE Nandpur-02 Gama Ray Log Caliper log Density log Neutron Log Sonic Log PEF log Resistivity log SP log 2 GO-845-KBR-39 Dip line NW-SE 3 GO-845-KBR-43 Strike line NE-SW 4 GO-845-KBR-45 Dip line NW-SE 5 GO-845-KBR-48 Strike line NE-SW

9. Methodology

10. Seismic Interpretation

11. Seismic Interpretation Workflow

12. Base Map

13. Time-Depth Chart

14. Uninterpreted seismic line GO-845-KBR- 39

15. Uninterpreted seismic line GO-845-KBR- 39

16. Uninterpreted seismic line GO-845-KBR- 43

17. Uninterpreted seismic line GO-845-KBR-4 3

18. Uninterpreted seismic line GO-845-KBR- 38

19. Uninterpreted seismic line GO-845-KBR- 38

20. Uninterpreted seismic line GO-845-KBR- 45

21. Uninterpreted seismic line GO-845-KBR- 45

22. Uninterpreted seismic line GO-845-KBR- 48

23. Uninterpreted seismic line GO-845-KBR- 48

24. Time Contour Maps

25. Lumshiwal Formation

26. Samanasuk Formation

27. Depth Contour Maps

28. Lumshiwal Formation

29. Samanasuk Formation

30. Petrophysical Analysis

31. Petrophysical Analysis Workflow

32. Raw log Curves

33. Petrophysical Analysis Formations Depth of Formation (m) Thickness of Formations (m ) Zones Depth of Zones Thickness of Zones Lumshiwal 1685-1795 110 Zone 1 1789-1794 5 Samanasuk 1852-1986 134 Zone 2 1866-1871 5 Shinawari 1986-2094 108 Zone 3 2072-2081 9 Net Pay - - - - 19m

34. Zone of Interest Criteria Zone of Interest Criteria and Computed Properties GR value should be low Caliper Stable Neutron-Density Crossover MSFL< LLS < LLD Sonic time interval should be less Volume of Shale Density Porosity Sonic porosity Average porosity Effective porosity Resistivity of water Water saturation Hydrocarbon saturation

35. Computed Parameters Parameters Formulas Volume of Shale Density Porosity Sonic Porosity Effective porosity Average Porosity Water Saturation Hydrocarbon Saturation Parameters Formulas Volume of Shale Density Porosity Sonic Porosity Effective porosity Average Porosity Water Saturation Hydrocarbon Saturation

36. Zone 1 (Lumshiwal)

37. Picket Plot of Zone 1

38. Zone 2 (Samanasuk)

39. Picket plot of Zone 2

40. Petrophysical Results ZONES (AVERAGE IN %) Zones V SH PHIA PHIE S WI S WA S HI S HA Zone 1 46.533 29.166 15.1 45.3 41.95 54.7 58.05 Zone 2 6.1 19.3 18.31 19.483 0.26 80.516 80.867 Zone 3 41.25 25.97 14.69 54.38 43.75 45.62 56.25 Average in % 31.29433 24.812 16.03333 39.721 28.65333 60.27867 65.05567

41. Conclusion An all-encompassing seismic investigation with a strong foundation for assessing the Samanasuk and Lumshiwal Formations in the Kabir Wala study region. I draw the conclusion that, based on the interpretation of seismic data in the Kabir wala region, there aren't any normal faults with a small throw, indicating that extensional tectonics is at work there. In order to further validate the structure identified on the seismic section, three horizons, the Lumshiwal Formation of the Cretaceous, the Chichali Formation of the Cretaceous, and the Samanasuk Formation of the Jurrasic age have been marked on a seismic line. Time and depth contour maps have then been generated for these horizons.   The petrophysical properties of the Lumshiwal Formation, Samanasuk Formation and Shinawari Formation were thoroughly investigated. The findings show that the formation may be divided into two different facies: sand and shale. According to the petrophysical study, the zones meet each of the five requirements for a zone of interest. The zones' total net pay thickness is 19 meters (62 feet). Zone 1 has the following percentages: 46.533 %, 15.1 %, and 54.7 % for volume shale, effective porosity and saturation of hydrocarbon, respectively; Zone 2 has the following percentages: 6.1% ,18.31%, and 80.516% for volume shale, effective porosity and Saturation of hydrocarbon. Zone 3 has the following percentages: 41.25 %, 14.69 %, and 45.62 % for volume correspondingly. Zone 2 is more hydrocarbon-bearing than the other two zones, according to the overall analysis.