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Fast-Track 2D Seismic Processing While Drilling to Ameliorate Foothills Exploration and Optimize Well Trajectory: An Example from the Central Kurdistan Region of Iraq

  • François SapinEmail author
  • Hassan Allouche
  • Grégoire Sterbecq
  • Bertrand Chevallier
  • Boerre Eriksen
Chapter
Part of the Frontiers in Earth Sciences book series (FRONTIERS)

Abstract

Complex mechanical stratigraphy and misplaced formation tops often make petroleum exploration of foothills domains extremely challenging. As a consequence, proper seismic imaging, as well as good geological knowledge, are mandatory to optimize a well trajectory that is suited for all the targeted objectives Although the stratigraphy of the Kurdistan Region of Iraq, is relatively simple, the tightening of the structures often leads to the activation of internal mechanical discontinuities and a shift of the main objectives. As a result, as is typically the case in foothills, side-tracked wells have to be carefully planned. In this case study, the first leg of the well demonstrated that the current seismic image was structurally incorrect and would not allow penetration of the deepest objectives. As consequence side-track was planned. A fast-track processing on the closest 2D line was performed to correct the dips of the drilled formations. The output helped optimize the side track trajectory and to drill ahead with better constraints.

Keywords

Foothills Seismic imaging Seismic interpretation 

Notes

Acknowledgments

The authors would like to thanks Marathon Oil Company for agreeing to the publication of this paper. We also are grateful to the Kurdistan Region of Iraq Ministry of Resources for their authorization to publish this paper. We would like to express our deepest thanks to the research team of Sulaimaniya University (Dr. S.H. Ahmed, Dr. S.H.S. Hassan, Dr. I.M.J. Mohialdeen, Dr. F.A. Ameen, Dr. D.H.M. Ameen, Dr. I.M. Ghafor, Dr. F.M. Qader, Dr. A.K.S. Bety, Dr. D.F. Hamamin, Dr. Amanj and Dr. G.A. Hamasur), Dohuk University (Mr. H.S. Shaban and Dr. N.T. Shamoun) and Geological Survey of Sulaimaniya (Dr. N.M. Kadir and Dr. S.F. Ahmad) who helped us greatly in our field campaigns with their knowledgeable advices and enthusiasm.

We are also thankful to our reviewers and editor whose constructive remarks and comments helped a lot to improve this paper.

References

  1. Agard P, Omrani J, Jolivet L, Mouthereau F (2005) Convergence history across Zagros (Iran): constraints from collisional and earlier deformation. Int J Earth Sci 94(3):401–419CrossRefGoogle Scholar
  2. Agard P, Omrani J, Jolivet L, Whitechurch H, Vrielynck B, Spakman W, Monié P, Meyer B, Wortel R (2011) Zagros orogeny: a subduction-dominated process. Geol Mag 148(5–6):692–725CrossRefGoogle Scholar
  3. Allen M, Jackson JA, Walker R (2004) Late Cenozoic reorganization of the Arabia-Eurasia collision and the comparison of short-term and long-term deformation rates. Tectonics 23:16pGoogle Scholar
  4. Allouche H, Sapin F, Chevallier B, Brosille E (2015) Seismic imaging in western Zagros and impact on hydrocarbon exploration: a case study from Kurdistan Region of Iraq. In: Proceedings of Abu Dhabi international petroleum exhibition and conference. Society of Petroleum EngineersGoogle Scholar
  5. Ameen BM, Karim KH (2008) New sedimentologic and stratigraphic characteristics of the upper boundary of the Qamchuqa Formation (Early Cretaceous) at Northwest of Erbil, Kurdistan Region. NE Iraq Iraqi Bull Geol Mining 4:1–13Google Scholar
  6. Ameen MS (1991) Possible forced folding in the Taurus Zagros belt of northern Iraq. Geol Mag 128:561–584CrossRefGoogle Scholar
  7. Ameen MS (1992) Effect of basement tectonics on hydrocarbon generation, migration and accumulation in Northern Iraq. AAPG Bull 76:356–370Google Scholar
  8. Aqrawi AA, Goff JC, Horbury AD, Sadooni FN (2010) The petroleum geology of IraqGoogle Scholar
  9. Bahroudi A, Talbot CJ (2003) The configuration of the basement beneath the Zagros basin. J Pet Geol 26:257–282CrossRefGoogle Scholar
  10. Buday T, Jassim SZ (1987) The regional geology of Iraq, vol 2, tectonism, magmatism and metamorphismGoogle Scholar
  11. Civello S, Janiseck JM, Strobbia C (2015) 2D seismic lines reprocessing test using common reflection surface technique. In: Proceedings of offshore mediterranean conference and exhibition, March 25–27th, Ravenna, ItalyGoogle Scholar
  12. Dell’Aversana P, Colombo D, Buia M, Morandi S (2003) Velocity/interface model building in a thrust belt by tomographic inversion of global offset seismic data. Geophys Prospect 51:23–25CrossRefGoogle Scholar
  13. Fontaine J-M, Monod O, Braud J, Perincek D (1989) The Hezan units: a fragment of the south Neo-Tethyan passive continental margin in SE Turkey. J Petrol Geol 12:29–50CrossRefGoogle Scholar
  14. Hinsch R, Krawczyk CM, Gaedicke C, Giraudo R, Demuro D (2002) Basement control on oblique thrust sheet evolution: seismic imaging of the active deformation front of the Central Andes in Bolivia. Tectonophysics 255:23–39CrossRefGoogle Scholar
  15. Hudson JA (1967) Scattering surface waves from a surface obstacle. Geophys J 13:441–458CrossRefGoogle Scholar
  16. Jaiswal P, Zelt CA (2008) Unified imaging of multichannel seismic data: combining travel time inversion and pre-stack depth migration. Geophysics 73:269–280CrossRefGoogle Scholar
  17. Jaiswal P, Zelt CA, Bally AW, Dasgupta R (2008) 2-D traveltime and waveform inversion for improved seismic imaging: Naga Thrust and Fold Belt, India. Geophys J Int 173:642–658CrossRefGoogle Scholar
  18. Jassim SZ, Buday T (2006a) Tectonic framework. In: Jassim S, Goff JC (eds) Geology of Iraq. pp 45–55Google Scholar
  19. Jassim SZ, Buday T (2006b) Units of the unstable shelf and the zagros suture. In: Jassim SZ, Goff JC (eds) Geology of Iraq. pp 45–55Google Scholar
  20. Karim KH, Surdashy AM (2005) Tectonic and depositional history of upper Cretaceous Tanjero formation in Sulaimaniya area, NE-Iraq. J Zankoy Sulaimaniya Univ 8:47–61Google Scholar
  21. Le Begat S, Chauris H, Devaux V, Nguyen S, Noble M (2004) Velocity model estimation for depth imaging: comparison of three tomography methods on a 2D real data set. Geophys Prospect 52:427–438CrossRefGoogle Scholar
  22. Luján M, Storti F, Balanyá JC, Crespo-Blanc A, Rossetti F (2003) Role of décollement material with different rheological properties in the structure of the Aljibe thrust imbricate (Flysch Trough, Gibraltar Arc): an analogue modelling approach. J Struct Geol 25(6):867–882CrossRefGoogle Scholar
  23. Marsden D (1993) Static corrections-a review, part 2. leading Edge 12(1):43–49CrossRefGoogle Scholar
  24. Mitra S (2002) Fold-accommodation faults. AAPG Bull 86:671–693Google Scholar
  25. Mouthereau F, Lacombe O, Verges J (2012) Building the Zagros collisional orogen: timing, strain distribution and the dynamics of Arabia/Eurasia plate convergence. Tectonophysics 532–535:27–60CrossRefGoogle Scholar
  26. Palaz I, Marfurt KJ (1997) Carbonate seismology: an overview. In: Palaz I, Marfurt KJ (eds) Carbonate seismology. Geophysical development Series 6, pp 1–8Google Scholar
  27. Poblet J, McClay K (1996) Geometry and Kinematics of single-layer detachment folds. AAPG Bull 80:1085–1109Google Scholar
  28. Schott B, Koyi HA (2001) Estimating basal friction in accretionary wedges from the geometry and spacing of frontal faults. EPSL 194:221–227CrossRefGoogle Scholar
  29. Tarrass I, Giraud L, Thore P, Aye F (2010) Modeling of seismic waves propagation in presence of topography. In: Proceedings of SEG annual meeting, October 17–22, Denver, United Sates of AmericaGoogle Scholar
  30. van Bellen RC, Dunnington HV, Wetzel R, Morton DM (1959) Lexique stratigraphique international, III, Asie, fasc. 10a, Iraq. Centre National de la Recherche Scientifique, Paris, pp 333Google Scholar
  31. Vergés J, Saura E, Casciello E, Fernàndez M, Villaseñor A, Jiménez-Munt I, García-Castellanos D (2011) Crustal-scale cross-sections across the NW Zagros belt: implications for the Arabian margin reconstruction. In: Lacombe O, Grasemann B, Simpson G (eds) Geodynamic evolution of the Zagros. Geol Mag 148:739–761Google Scholar
  32. Wiltschko D, Eastman D (1983) Role of basement warps and faults in localizing thrust fault ramps. In: Hatcher JRD, Williams H, Zietz I (eds) Contribution to the tectonics and geophysics of mountain chains. Memoir 158. Geological Society of America, Boulder, CO, pp 117–190Google Scholar
  33. Woodward NB, (1988) Primary and secondary basement controls on thrust sheet geometries. In: Schmidt CJ, Perry Jr W. (eds) Interaction of the rocky mountain foreland and the cordilleran thrust belt. Memoir 171. Geological Society of America, Boulder, CO, pp 353–366Google Scholar
  34. Wu WJ, Lines L, Burton A, Lu HX, Zhu J, Jamison W, Bording RP (1998) Prestack depth migration of an Alberta Foothills data set-the Husky experience. Geophysics 63:392–398CrossRefGoogle Scholar
  35. Yan LL, Lines LR (2001) Seismic imaging and velocity analysis for an Alberta Foothills seismic survey. Geophysics 66:721–732CrossRefGoogle Scholar
  36. Yilmaz Ö, (2001) Seismic data Analysis, vol 2 In: Doherty SM. (ed) SEGGoogle Scholar

Copyright information

© Springer International Publishing AG 2017

Authors and Affiliations

  • François Sapin
    • 1
    Email author
  • Hassan Allouche
    • 1
  • Grégoire Sterbecq
    • 1
  • Bertrand Chevallier
    • 1
  • Boerre Eriksen
    • 2
  1. 1.Total E&P Exploration Mena Hub-DubaiDubaiUnited Arab Emirates
  2. 2.Marathon Oil CompanyHoustonUSA

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