2D Seismic Interpretation to Understand the Structural Geometry of Cretaceous Sand Packages, Jabo Field, Pakistan


  • M. J. Khan Bahria University, Karachi Campus http://orcid.org/0000-0003-3333-7091
  • M. Umar Bahria University, Karachi Campus
  • M. Khan Bahria University, Karachi Campus
  • A. Das Bahria University, Karachi Campus


This study is focused on interpretation of 2D seismic reflection profiles coupled with borehole logs of
Jabo Field (JF). The seismic interpretation revealed the configuration of basin fill deposits, subsurface
geological structural geometries and their association with tectonic interventions in JF, Lower Indus
Basin, Pakistan. Primarily, the tectonic stresses control the dimensions, geometry and style of
deformation of geological structures which contribute in development of hydrocarbon trapping system.
We have studied the structural geometries of Cretaceous sand packages which serve as a reservoir in oil
& gas prone JF. Isochron and isopach maps were prepared to delineate the geological structure of
Top of Lower Goru (TLG), Top of Middle Sand (TMDS) and Top of Basal Sand (TBSL). TLG forms a
three-way dip closure bounded by a NE-SW trending major fault of the JF; the geological structure
at TMDS level is a two-way fault bounded since to the north and south it is bounded by dipping blocks;
and the structural closure at TBSL level is two-way dip and two-way faults bounded. The structural
closure to the north and south provided by the dipping horizons, from west by Main Fault Line (MFL) of
JF and from east the closure is provided both by Secondary Fault Line (SFL) of the JF and dipping
surfaces of sand packages. Interpretation shows the geological implications of extensional regime in the
study area, dominated by horst and graben structures which are believed to be promising hydrocarbon traps.

Author Biographies

M. J. Khan, Bahria University, Karachi Campus

Department of Earth and Enviornmental Sciences

M. Umar, Bahria University, Karachi Campus

Department of Earth and Enviornmental Sciences

M. Khan, Bahria University, Karachi Campus

Department of Earth and Enviornmental Sciences

A. Das, Bahria University, Karachi Campus

Department of Earth and Enviornmental Sciences


S.A. Abbasi, S.H. Solangi, A. Nazeer, S. Asim, W. Habib and I.A. Solangi, “An overview of structural style and hydrocarbon potential of Jabo Field, Southern Sindh Monocline, Southern Indus Basin, Pakistanâ€, Sindh Univ. Res. Jour, (Science Series), vol. 47, no. 2, pp. 347-354, 2015.

M.B. Dobrin, “Introduction to geophysical prospectingâ€, New York, McGrawHill. Book Company, pp. 375, 1976.

H.N. Al-Sadi, “Seismic explorationâ€, J. Can. Soc. Exploration Geophysicists, vol. 1, pp. 13-43, 1980.

V.N. Quadri and S.M. Quadri, “Exploration anatomy of success in oil and gas exploration in Pakistanâ€, Oil and Gas Journal, vol. 94, no. 20, pp. 1915–94, 1996.

N. Ahmed, P. Fink, S. Sturrock, T. Mahmood and M. Ibrahim, “Sequence Stratigraphy as Predictive Tool in Lower Goru Fairway, Lower and Middle Indus Platform, Pakistanâ€, Annual Technical Conference, pp. 85-93, 2004.

J. Afzal, “Petroleum resource appraisal of Lower Goru Play, Badin Block, Lower Indus Basin, Pakistanâ€, Pakistan J. Hydrocarbon Res., vol. 8, pp. 12-132, 1996.

S. Ahmed, “Study on oil and gas distribution in the Badin Blockâ€, Union Texas Pakistan, Inc., SPE-PAPG, Annual Technical Conference, pp.137-147, 1999.

A. Munir, S. Asim, S.A. Bablani and A.A. Asif, “Seismic data interpretation and fault mapping in Badin Area, Sindh, Pakistanâ€, Sindh University Research Journal (Sci. Series), vol. 46, no. 2, pp.133-142, 2014.

M.J. Khan et al. / The Nucleus 56, No. 2 (2019) 78-85

S. Ahmed, S.H. Solangi, M.S.K. Jadoon and A. Nazeer, “Tectonic evolution of structures in Southern Sindh Monocline, Indus Basin, Pakistan formed in multi-extensional tectonic episodes of Indian Plate, Pakistanâ€, Geodesy and Geodynamics, vol. 9, no. 5, pp. 456-473, 2018.

M.J. Khan, M. Ali and M. Khan, “Gamma ray-based facies modelling of lower Goru formation: A case study in Hakeem Daho Well Lower Indus Basin Pakistanâ€, Bahria Univ. Res. J. Earth Sci. vol. 2, no. 1, pp. 40-45, 2017.

M. Ali, M.J. Khan, M. Ali and S. Iftikhar, “Petrophysical analysis of well logs for reservoir evaluation: A case study of “Kadanwari†gas field, middle Indus basin, Pakistanâ€, Arabian Journal of Geosciences, vol. 12, no. 6, pp. 215- 224, 2019.

C.J. Wandrey, B.E. Law and H.A. Shah, “Sembar Goru/Ghazij composite total petroleum system, Indus and Sulaiman-Kirthar Geologic Provinces, Pakistanâ€, Pakistan and India. No. 2208-C. 2004.

S. Ahmed, S.H. Solangi, I.A. Brohi, Q.D. Khokhar and R.A. Lashari “Study of stratigraphy and structural styles in the subsurface of Southern Sindh Monocline, Pakistan: Using seismic and well dataâ€, Sindh Univ. Res. Jour. (Sci. Ser.), vol. 46, no. 4, pp. 439-446, 2014.

A.A. Memon, “The role of cretaceous rifts on the occurrence of oil in Sindh, Monocline, Pakistanâ€, SPE-PAPG, Annual Technical Conference, pp. 65-74, 1999.

M.F. Mahmood, U. Shakir, M.R. Amjad and A. Taimur, “Structural style and hydrocarbon potential evaluation of Badin Block, Lower Indus Basin, Pakistanâ€. Bahria Univ. Res. Journal of Earth Sci., vol. 2, no. 1, pp. 30-34, 2017.

C. Ebdon, M. Wasimuddin, H.A. Malik and S. Akhter, “Sequence stratigraphy of the B Sand (Upper Sand, Lower Goru Formation) in the Badin area: Implications for development and exploitationâ€, Annual Technical Conference, Islamabad, Pakistan, pp. 179-197, 2004.

F. Campbell, “Fault Criteriaâ€, Geophysics, vol. 30, no. 6, pp. 976-997, 1965.

E.A. Gnos, T. Immenhauser and K. Peter, “Late Cretaceous / Early Tertiary Convergence between Indian and Arabian Plates Recorded in Ophiolites and Related Sedimentsâ€, Tectonophysics, 271, pp. 1-19, 1997.

A. Kemal, A.S.H. Zaman and M. Humayon, “New directions and strategies for accelerating petroleum exploration and production in Pakistanâ€, Proc. of International Petroleum Seminar, Islamabad, Pakistan, Ministry of Petroleum and Natural Resources, pp. 16–57, 1991.




How to Cite

M. J. Khan, M. Umar, M. Khan, and A. Das, “2D Seismic Interpretation to Understand the Structural Geometry of Cretaceous Sand Packages, Jabo Field, Pakistan”, The Nucleus, vol. 56, no. 2, pp. 78–85, Dec. 2019.