1887
  1. Home
  2. Conferences
  3. Conference Proceedings
  4. IOR 2019 – 20th European Symposium on Improved Oil Recovery
  5. Conference paper

Abstract

Summary

Many mechanisms have been proposed for low salinity waterflooding enhanced oil recovery (EOR) in carbonate rocks over the last decade, and they are still in debate. One suggested mechanism is the dissolution of anhydrite (CaSO4) mineral from a rock material, which generates sulfate ions in-situ, and subsequently acts as a wettability modifier chemically. Another suggested mechanism is the increase in permeability due to mineral dissolution. Primary objective of this work was to verify whether dissolution of anhydrite could be the key low salinity waterflooding EOR mechanism.

Spontaneous imbibition tests were conducted using six rock samples from two carbonate oil reservoirs. The first reservoir rock contains anhydrite, while the second reservoir does not contain anhydrite. If anhydrite dissolution is the key mechanism, then the amount of increased oil recovery due to low salinity brine should correlate with the amount of anhydrite dissolved from the rock. Our experimental results, however, did not suggest such a relationship. Hence, anhydrite dissolution was considered unlikely as the key mechanism of low salinity EOR for the crude-oil, brine and rock (COBR) system used in this study.

© EAGE Publications BV
Loading

Article metrics loading...

/content/papers/10.3997/2214-4609.201900125
2019-04-08
2024-04-25

  • From This Site

    /content/papers/10.3997/2214-4609.201900125
    dcterms_title,dcterms_subject,pub_keyword
    -contentType:Journal -contentType:Contributor -contentType:Concept -contentType:Institution
    10
    5
Loading full text...

Full text loading...

References

  1. Alotaibi, M. B., Nasr-El-Din, H. A., and Fletcher, J. J.
    2011. Electrokinetics of Limestone and Dolomite Rock Particles. Society of Petroleum Engineers. doi:10.2118/148701‑PA
     https://doi.org/10.2118/148701-PA [Google Scholar]
  2. AlQuraishi, A. A., AlHussinan, S. N., and AlYami, H. Q.
    2015. Efficiency and Recovery Mechanisms of Low Salinity Water Flooding in Sandstone and Carbonate Reservoirs. Offshore Mediterranean Conference.
     [Google Scholar]
  3. Al-Shalabi, E. W., and Sepehrnoori, K.
    2015. A comprehensive review of low salinity-engineered water injections and their applications in sandstone and carbonate rocks. Journal of Petroleum Science and Engineering Volume 139, March 2016, Pages 137–161. https://doi.org/10.1016/j.petrol.2015.11.027.
     [Google Scholar]
  4. Al-Shalabi, E. W., Sepehrnoori, K., and Pope, G.
    2015. Geochemical Interpretation of Low-Salinity-Water Injection in Carbonate Oil Reservoirs. Society of Petroleum Engineers. doi:10.2118/169101‑PA
     https://doi.org/10.2118/169101-PA [Google Scholar]
  5. ASTM D6560-17
    , Standard Test Method for Determination of Asphaltenes (Heptane Insolubles) in Crude Petroleum and Petroleum Products, ASTM International, West Conshohocken, PA, 2017.
     [Google Scholar]
  6. Austad, T., Shariatpanahi, S.F., Strand, S., Black, C.J.J., and Webb, K.J.
    2012. Conditions for a Low-Salinity Enhanced Oil Recovery (EOR) Effect in Carbonate Oil Reservoirs, Energy Fuels, 2012, 26 (1), pp 569–575, DOI: 10.1021/ef201435g
     https://doi.org/10.1021/ef201435g [Google Scholar]
  7. Austad, T., Shariatpanahi, S.F., Strand, S., Aksulu, H., and Puntervold, T.
    2015. Low Salinity EOR Effects in Limestone Reservoir Cores Containing Anhydrite: A Discussion of the Chemical Mechanism. Energy Fuels, 2015, 29 (11), pp 6903–6911. DOI: 10.1021/acs.energyfuels.5b01099.
     https://doi.org/10.1021/acs.energyfuels.5b01099 [Google Scholar]
  8. Derkani, M., Fletcher, A., Abdallah, W., Sauerer, B., Anderson, J., and Zhang, Z.
    2018. Low salinity waterflooding in carbonate reservoirs: review of interfacial mechanisms. Colloids and Interfaces, 2 (2). https://doi.org/10.3390/colloids2020020.
     [Google Scholar]
  9. Hiorth, A., Cathles, L.M., and Madland, M.V.
    2010. “The impact of pore water chemistry on carbonate surface charge and oil wettability”, Transport in Porous Media, October 2010, Volume 85, Issue 1, pp 1–21.
     [Google Scholar]
  10. Hopkins, P.
    2017. “Water-Based EOR and Initial Wettability in Carbonates”, PhD Thesis UiS no. 329, University of Stavanger.
     [Google Scholar]
  11. Jiang, H., Chopping, C. G., Forsman, C., and Xie, X.
    2014. Lab Observation Of Low Salinity Waterflooding For A Phosphoria Reservoir Rock. Society of Petroleum. Engineers doi: 10.2118/169546‑MS
     https://doi.org/10.2118/169546-MS [Google Scholar]
  12. JIS K2249
    , Crude petroleum and petroleum products-Determination of density, Japanese Industrial Standards Committee, Tokyo, Japan, 2016.
     [Google Scholar]
  13. JIS K2501
    , Petroleum products and lubricants─Determination of neutralization number, Japanese Industrial Standards Committee, Tokyo, Japan, 2017.
     [Google Scholar]
  14. Mahani, H., Keya, A.L., Berg, S., Bartels, W-B., Nasralla, R., and Rossen, W.R.
    2015. “Insights into the Mechanism of Wettability Alteration by Low-Salinity Flooding (LSF) in Carbonates”, Energy Fuels, 2015, 29 (3), pp 1352–1367. DOI: 10.1021/ef5023847
     https://doi.org/10.1021/ef5023847 [Google Scholar]
  15. Myint, P., and Firoozabadi, A.
    2015. Thin liquid films in improved oil recovery from low-salinity brine. Current Opinion in Colloid & Interface Science. Volume 20, Issue 2, April 2015, Pages 105–114. https://doi.org/10.1016/j.cocis.2015.03.002
     [Google Scholar]
  16. Nasralla, R. A., Sergienko, E., Masalmeh, S. K., van der Linde, H. A., Brussee, N. J., Mahani, H., Alqarshubi, I.
    2014. Demonstrating the Potential of Low-Salinity Waterflood to Improve Oil Recovery in Carbonate Reservoirs by Qualitative Coreflood. Society of Petroleum Engineers. doi: 10.2118/172010‑MS
     https://doi.org/10.2118/172010-MS [Google Scholar]
  17. Ouden. L., Naralla, R., Guo, H., Bruining, H., and Kruisdijk, C.
    2015. “Calcite Dissolution Behaviour During Low Salinity Water Flooding in Carbonate Rock”, 18th European Symposium on Improved Oil Recovery, Dresden, Germany.
     [Google Scholar]
  18. Pingo Almada, M. B., Pieterse, S. G. J., Marcelis, A. H. M., van Haasterecht, M. J. T., Brussee, N. J., and van der Linde, H. A.
    2013. Experimental Investigation on the Effects of Very Low Salinity on Middle Eastern Sandstone Corefloods. Society of Petroleum Engineers. doi: 10.2118/165180‑MS.
     https://doi.org/10.2118/165180-MS. [Google Scholar]
  19. Pu, H., Xie, X., Yin, P., and Morrow, N. R.
    2010. Low-Salinity Waterflooding and Mineral Dissolution. Society of Petroleum Engineers. doi: 10.2118/134042‑MS
     https://doi.org/10.2118/134042-MS [Google Scholar]
  20. Romanuka, J., Hofman, J., Ligthelm, D. J., Suijkerbuijk, B., Marcelis, F., Oedai, S., Austad, T.
    2012. Low Salinity EOR in Carbonates. Society of Petroleum Engineers. doi: 10.2118/153869‑MS
     https://doi.org/10.2118/153869-MS [Google Scholar]
  21. Piñerez Torrijos, I., Risanger, M., Puntervold, T., Strand, S., and Austad, T.
    2017. Impact of Anhydrite on the Low Salinity EOR Effect in Sandstone Material with High Clay Content, Presented at the 19th European Symposium on Improved Oil Recovery, EAGE-The National IOR Center of Norway, Stavanger, Norway. DOI: 10.3997/2214‑4609.201700270.
     https://doi.org/10.3997/2214-4609.201700270 [Google Scholar]
  22. Shariatpanahi, S., Strand, S., and Austad, T.
    2011. Initial Wetting Properties of Carbonate Oil Reservoirs: Effect of the Temperature and Presence of Sulfate in Formation Water. Energy & Fuels 2011 25 (7), 3021-3028. DOI: 10.1021/ef200033h
     https://doi.org/10.1021/ef200033h [Google Scholar]
  23. Uetani, T., Takabayashi, K., Kaido, H., and Yonebayashi, H.
    2017. Laboratory Investigation of Low Salinity Waterflooding using Carbonate Reservoir Rock Samples. Presented at 19th European Symposium on Improved Oil Recovery. Stavanger, Norway. DOI: 10.3997/2214‑4609.201700266
     https://doi.org/10.3997/2214-4609.201700266 [Google Scholar]
  24. Yousef, A., Al-Saleh, S., Al-Kaabi, A., Al-Jawfi, M.
    2011. Laboratory investigation of the impact of injection-water salinity and ionic content on oil recovery from carbonate reservoirs. SPE Reservoir Evaluation & Engineering. 14, 578–93. http://dx.doi.org/10.2118/137634-PA.
     [Google Scholar]
  25. Yousef, A., Al-Saleh, S., and Al-Jawfi, M.
    2012. Improved/enhanced oil recovery from carbonate reservoirs by tuning injection water salinity and ionic content. Presented at the SPE improved oil recovery symposium, Tulsa, OK, USA. http://dx.doi.org/10.2118/154076-MS.
     [Google Scholar]
http://instance.metastore.ingenta.com/content/papers/10.3997/2214-4609.201900125
Loading
Investigation of Anhydrite Dissolution as a Potential Low Salinity Waterflooding Mechanism in Carbonates
Conference Proceedings 2019, 1 (2019); https://doi.org/10.3997/2214-4609.201900125
/content/papers/10.3997/2214-4609.201900125
/content/papers/10.3997/2214-4609.201900125
Loading

Data & Media loading...

Most Cited This Month Most Cited RSS feed

This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error