The Role of Stylolites and its Pattern Attribute on Porosity and Permeability: Evidence from a Lower Cretaceous Carbonate Oil Reservoir, Abadan Plain, SW Iran

Document Type : Research Paper

Authors

1 Department of Geology, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, Iran\Oil and Gas Research Institute, Ferdowsi University of Mashhad, Mashhad, Iran

2 Department of Geology, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, Iran

3 Oil and Gas Research Institute, Ferdowsi University of Mashhad, Mashhad, Iran

Abstract

Stylolites are localized dissolution surfaces commonly found in sedimentary rocks. Stylolites have been extensively studied for their important role in controlling porosity and permeability through dissolution, precipitation, deformation, and fluid transport in rocks. Prevalent views are that they act as permeability barriers, although laboratory studies are scarce. Here, we report on a systematic laboratory study of the influence of stylolites on permeability in carbonates. Our data demonstrate that the studied stylolites do not act as barriers to fluid flow. When a stylolite occurs perpendicular to the flow direction, the permeability follows the same power law porosity-permeability trend as the stylolite-free material. Stylolite surfaces can play an effective role as open pathways in increasing the effective porosity of reservoir rock, and due to the wide amplitude range of stylolites, it is necessary to ensure that the permeability of facies increases. The stylolites have been classified into three main types based on their properties such as genesis, general shape, size, the difference in amplitude, amount of accumulated insoluble material in their seams, discontinuity of their seam material, and, most importantly, to predict their role in conducting fluid flow has been explained. However, the direction of dominant stress that determines the genetic type of stylolites and all the effective parameters in the burial diagenetic stage, including the pressure, temperature, and soluble ion-rich fluids, can increase or decrease the porosity and permeability values by draining or blocking the pathway produced by this process through quality assessment of carbonate host rock reservoir. Ultimately, based on this, stylolites in some facies of the Fahliyan Formation in the Abadan Plain Zone act as a continuous and connected porosity for fluid flow and, according to their amplitude and morphology, stylolites increased the effective permeability and reservoir quality, especially in the mud-supported facies in this formation. However, our data affirm that all conditions, especially the nature of morphology, are the most influential parameters determining the porosity and permeability of the Fahliyan Formation facies.

Keywords

References

  1. Fletcher, R.C., & Pollard, D.D., (1981). Anticrack model for pressure solution surfaces. Geology, 9, 419-424, doi.org/10.1130/0091-7613(1981)9<419:AMFPSS>2.0.CO;2.##
  2. Schultz, R.A., & Fossen, H., (2008). Terminology for structural discontinuities. American Association of Petroleum Geologists Bulletin, 92, 15, doi.org/10.1306/02200807065. ##
  3. Koehn, D., Rood, M.P., Beaudoin, N., Chung, P., Bons, P.D., & Gomez-Rivas, E., (2016). A new stylolite classification scheme to estimate compaction and local permeability variations. Sedimentary Geology, 346, 60-71, doi.org/10.1016/j.sedgeo.2016.10.007. ##
  4. Humphrey, E., Gomez-Rivas E., Neilson, J., Martín-Martín, J.D., Healy, D., Yao, Sh., & Bons, P.D., (2020). Quantitative analysis of stylolite networks in different platform carbonate facies. Marine and Petroleum Geology, 114, 104203, doi.org/10.1016/j.marpetgeo.2019.104203. ##
  5. David, M.E., (2016). Evaluation de la compaction chimique et des paléo-enfouissements des carbonates par l’étude des stylolites sédimentaires - Cas du Bassin de Paris. University pierre et Marie Curie, Paris, 42. ##
  6. Choquette, P.W., & Pray, L.C., (1970). Geologic nomenclature and classification of porosity in sedimentary carbonates, American Association of Petroleum Geologist, Bulletin, 54, 207-250, doi.org/10.1306/5D25C98B-16C1-11D7-8645000102C1865D. ##
  7. Bruna, P.O., Lavenub, A.P.C., Matontic, Ch., & Bertotti, G., (2019). Are stylolites fluid-flow efficient features? Journal of Structural Geology, 125, 270-277, doi.org/10.1016/j.jsg.2018.05.018. ##
  8. Saadatinejad, M.R., & Sarkarinejad, K., (2011). Application of the spectral decomposition technique for characterizing reservoir extensional system in the Abadan Plain, southwestern Iran. Marine and Petroleum Geology, 28 (6), 1205-1217, doi.org/10.1260/0144-5987.30.6. ##
  9. Abeed, Q., Alkhafaji, A., & Littke, R., (2011). Source rock potential of upper Jurassic-lower Cretaceous succession in the Southern Mesopotamian Basin, Southern Iraq. Journal of Petroleum Geology, 34(2), 117-134, doi.org/10.1111/j.1747-5457.2011.00497. x. ##
  10. Abdollahie Fard, I., Braathen, A., Mokhtari, M., & Alavi, S.A., (2006). Interaction of the zagros fold-thrust belt and the arabian-type, deep-seated folds in the abadan plain and the dezful embayment, SW Iran. Petroleum Geoscience, 12(4), 347-362, doi.org/10.1144/1354-079305-706. ##
  11. Soleimani, B., Hassani-Giv, M., & Abdollahie Fard, I., (2017). Formation pore pressure variation of the Fahliyan Formation in the Abadan Plain Basin, SW of Iran. Geofluids, Article-ID, 6265341, 13 p, doi.org/10.1155/2017/6265341. ##
  12. James, G. A., & Wynd, J. G., (1965). Nomenclature of Iranian oil agreement area, American Association of Petroleum Geologists, Bulletin, 49, 2182-2245, doi.org/10.1306/A663388A-16C0-11D7-8645000102C1865D. ##
  13. Rostami, L., Vaziri, S. H., Jahani, D., Solgi, A., Taherpour Khalil Abad, M., Carević, I., & Yahyaei, A., (2019). Neocomian Fahliyan formation carbonates in the oil well X2 (Dorood oil field, Persian Gulf): Biostratigraphic data from benthic foraminifera and algae. Iranian Journal of Earth Sciences, 11(3), 173-182, doi.org/10.30495/IJES.2019.667376. ##
  14. Khodaei, N., Rezaee, P., Honarmand, J., & Abdollahie Fard, I., (2021). Controls of depositional facies and diagenetic processes on reservoir quality of the Santonian carbonate sequences (Ilam Formation) in the Abadan Plain, Iran. Carbonates and Evaporites, 36, 19-43, doi.org/10.1007/s13146-021-00676-y.
  15. Motiei, H., (1993). Geology of Iran, the stratigraphy of Zagros. Geological Survey of Iran publication, Tehran, p. 572 (in Persian). ##
  16. Wennberg, O.P., & Rennan, L., (2017). A brief introduction to the use of X-ray computed tomography (CT) for analysis of natural deformation structures in reservoir rocks. Geological Society London Special Publications, 459(1), SP459.10, p. 20, doi.org/10.1144/SP459.10. ##
  17. Leah, H., Fagereng, Å., Meneghini, F., Morgan, J.K., Savage, H.M, Wang, M., Bell, R., & Ikari, M.J., (2020). Mixed brittle and viscous strain localization in pelagic sediments seaward of the Hikurangi Margin, New Zealand. Tectonics, 39, 1-28, doi.org/10.1029/2019TC005965. ##
  18. Hennessey, S., (2019). Stylolites: A Geologic Structure, An introduction to stylolites. URL: https://storymaps.arcgis.com/stories/f3ddb77bc8584561bf9853f082344a0d. ##
  19. Fossen, H., (2016). Structural Geology. Second Edition ed., Cambridge University Press, 524. ##
  20. Koehn, D., Renard, F., Toussaint, R., & Passchier, C.W., (2007). Growth of stylolite teeth patterns depending on normal stress and finite compaction. Earth and Planetary Science Letters, 257, 582-595, doi.org/10.1016/j.epsl.2007.03.015. ##
  21. Norman, K., (2015). Stylolitization of limestone: a study about the morphology of stylolites and its impacts of porosity and permeability in limestone. Independent project at the department of earth sciences, Uppsala University, Sweden, 24. ##
  22. Alsharhan, A.S., & Sadd, J.L., (2000). Stylolites in lower Cretaceous carbonate reservoirs, United Arab Emirates. In: Alsharhan, A.S., and Scott, R.W., eds., Middle East models of Jurassic-Cretaceous carbonate systems. Society for Sedimentary Geology, Special Publication 69, 185-207, doi.org/10.2110/pec/.00.69.0185. ##
  23. Koepnick, R.B., (1987). Distribution and permeability of stylolite-bearing horizons within a Lower Cretaceous carbonate reservoir in the Middle East: Society of Petroleum Engineers, Formation Evaluation, 2, 137-142, doi.org/10.2118/14173-PA. ##
  24. Al-Juboury, A., Al-Haj, M.A., & Al-Hadidy, A.H., (2021). Sedimentary petrology- chapter: Stylolite in upper cretaceous carbonate reservoirs from northwestern Iraq. Intec open Book Series, 15, doi.org/10.5772/INTECHOPEN.97527. ##
  25. Nygard, R., Gutiereez, M., Gauta, R., & Hoeg, K., (2004). Compaction behavior of argillaceous sediments as function of diagenesis. Marine and petroleum Geology, 21, 349-362, doi.org/10.1016/j.marpetgeo.2004.01.002. ##
  26. Heap, M., Baud, P., Reuschle, Th., & Meredit, Ph.G., (2014). Stylolites in limestones: Barriers to fluid flow? Geology 42, 51-54, doi.org/10.1130/G34900.1. ##
  27. Gomez-Rivas, E., Martín-Martín, J.D., Bons, P.D., Koehn, D., Griera, A., Travé, A., Lorens, M.G., Humphrey, E., & Neilson, J., (2022). Stylolites and stylolite networks as primary controls on the geometry and distribution of carbonate diagenetic alterations.Marine and Petroleum Geology, 136, 105444, 14, doi.org/10.1016/j.marpetgeo.2021.105444. ##
  28. Morad, D., Nader, F.H., Morad, S., Al-Darmaki, F., & Hellevang, H., (2018). Impact of stylolitization on fluid flow and diagenesis in foreland basins: Evidence from an upper Jurassic carbonate gas reservoir, Abu Dhabi, United Arab Emirates: Journal of Sedimentary Research, 88(12), 1345-1361, doi.org/10.2110/jsr.2018.70. ##
  29. Ameen, M.S., Buhidma, I.M., & Rahim, Z., (2010). The function of fractures and in-situ stresses in the Khuff reservoir performance, onshore fields, Saudi Arabia: American Association of Petroleum Geologists, Bulletin, 94, 27-60, doi.org/10.1306/06160909012. ##
  30. Eren, M., (2005). Origin of stylolite related fractures in Atoka bank carbonates, Eddy County, New Mexico, USA. Carbonates and Evaporites, 20, 42-49.
  31. Carozzi, A.V., & Von Bergen, D., (1987). Stylolitic porosity in carbonates: A critical factor for a deep hydrocarbon production. Journal of Petroleum Geology, 10, 267-282, doi.org/ 10.1111/j.17475457. 1987.tb00946. x. ##
  32. Ricketts, B., (2021). Geological Digressions: Mineralogy of carbonates; Pressure solution. URL: https://www.geological-digressions.com. ##

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