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An Investigation of Polymer Mechanical Degradation in Radial Well Geometry

  • Oddbjørn NødlandEmail author
  • Arild Lohne
  • Arne Stavland
  • Aksel Hiorth
Article
  • 27 Downloads

Abstract

It can be challenging to forecast polymer flooding performance at the field, in large part because of the complex non-Newtonian fluid rheology of polymer solutions. In this paper, we apply a model, previously developed to study linear core flooding experiments, to investigate polymer behaviour in radial flow near a vertical injector. The polymer system studied here is very common, HPAM in seawater. One key result is that a grid resolution on the order of millimetres is needed near the wellbore to accurately capture the well pressure, and the amount of mechanical degradation. We also demonstrate that for typical injection rates and permeabilities, the apparent shear thickening and mechanical degradation flow regimes are only relevant to consider within a few metres from the well. For the purposes of full field simulations, a pure shear thinning model should therefore suffice to describe fluid flow outside of the well grid blocks. Approximate analytical expressions are derived to test the numerical model. The steady-state molecular weight far away from the well is shown to scale as \(\propto {Q^{-0.65}\cdot {k^{0.425}}}\), where Q is the injection flow rate, and k is permeability. This scaling makes it possible to collect simulated values onto a single curve and can be used to predict mechanical degradation under different conditions. The results are in broad agreement with observations made of polymer mechanical degradation at the Dalia field. For the case of linear flow, there is an additional length dependency of degradation. The model then predicts an approximate power-law scaling \(M_{\mathrm{w}L}\propto {L^{\omega }}\), with \(M_{\mathrm{w}L}\) being the model molecular weight at a distance L from the inlet, which is consistent with recent laboratory experiments.

Keywords

Polymer flooding EOR Mechanical degradation Non-Newtonian fluids Porous media 

Notes

Acknowledgements

The authors acknowledge the Research Council of Norway and the industry partners, ConocoPhillips Skandinavia AS, Aker BP ASA, Eni Norge AS, Equinor ASA, Neptune Energy Norge AS, Lundin Norway AS, Halliburton AS, Schlumberger Norge AS, Wintershall Norge AS, and DEA Norge AS, of The National IOR Centre of Norway for support.

Supplementary material

References

  1. Åsen, S.M., Stavland, A., Strand, D., Hiorth, A.: An experimental investigation of polymer mechanical degradation at cm and m scale. In: SPE Improved Oil Recovery Conference. Society of Petroleum Engineers (2018)Google Scholar
  2. Bird, R.B., Armstrong, R.C., Hassager, O., Curtiss, C.F.: Dynamics of Polymeric Liquids, 1st edn. Wiley, New York (1977)Google Scholar
  3. Cannella, W., Huh, C., Seright, R.: Prediction of xanthan rheology in porous media. In: SPE Annual Technical Conference and Exhibition. Society of Petroleum Engineers (1988)Google Scholar
  4. Carrayrou, J., Mosé, R., Behra, P.: Operator-splitting procedures for reactive transport and comparison of mass balance errors. J. Contam. Hydrol. 68(3–4), 239–268 (2004)CrossRefGoogle Scholar
  5. Chauveteau, G., Moan, M.: The onset of dilatant behaviour in non-inertial flow of dilute polymer solutions through channels with varying cross-sections. J. Phys. Lett. 42(10), 201–204 (1981)CrossRefGoogle Scholar
  6. Chauveteau, G., Moan, M., Magueur, A.: Thickening behaviour of dilute polymer solutions in non-inertial elongational flows. J. Non-newtonian Fluid Mech. 16(3), 315–327 (1984)CrossRefGoogle Scholar
  7. Clemens, T., Lueftenegger, M., Laoroongroj, A., Kadnar, R., Puls, C.: The use of tracer data to determine polymer-flooding effects in a heterogeneous reservoir, 8 Torton Horizon Reservoir, Matzen Field, Austria. SPE Reserv. Eval. Eng. 19(4), 655–663 (2016)Google Scholar
  8. Delshad, M., Kim, D.H., Magbagbeola, O.A., Huh, C., Pope, G.A., Tarahhom, F.: Mechanistic interpretation and utilization of viscoelastic behavior of polymer solutions for improved polymer-flood efficiency. In: SPE Symposium on Improved Oil Recovery. Society of Petroleum Engineers (2008)Google Scholar
  9. Fletcher, A., Flew, S., Lamb, S., Lund, T., Bjornestad, E., Stavland, A., Gjovikli, N.: Measurements of polysaccharide polymer properties in porous media. In: SPE International Symposium on Oilfield Chemistry. Society of Petroleum Engineers (1991)Google Scholar
  10. Ford, J.A.: Improved Algorithms of Illinois-type for the Numerical Solution of Nonlinear Equations. Technical Report CSM-257, University of Essex, Colchester (1995). https://cswww.essex.ac.uk/NA/na_paper.html
  11. Glasbergen, G., Wever, D., Keijzer, E., Farajzadeh, R.: Injectivity loss in polymer floods: causes, preventions and mitigations. In: SPE Kuwait Oil and Gas Show and Conference. Society of Petroleum Engineers (2015)Google Scholar
  12. Gumpenberger, T., Deckers, M., Kornberger, M., Clemens, T.: Experiments and simulation of the near-wellbore dynamics and displacement efficiencies of polymer injection, Matzen Field, Austria. In: Abu Dhabi International Petroleum Conference and Exhibition. Society of Petroleum Engineers (2012)Google Scholar
  13. Herzer, J., Kinzelbach, W.: Coupling of transport and chemical processes in numerical transport models. Geoderma 44(2–3), 115–127 (1989)CrossRefGoogle Scholar
  14. Howe, A.M., Clarke, A., Giernalczyk, D.: Flow of concentrated viscoelastic polymer solutions in porous media: effect of MW and concentration on elastic turbulence onset in various geometries. Soft Matter 11(32), 6419–6431 (2015)CrossRefGoogle Scholar
  15. Hundsdorfer, W., Verwer, J.: Numerical solution of advection–diffusion–reaction equations. In: CWI Report NMN9603, Centrum voor Wiskunde en Informatica, Amsterdam, vol. 24, p. 30 (1996)Google Scholar
  16. Lantz, R.: Quantitative evaluation of numerical diffusion (truncation error). Soc. Petrol. Eng. J. 11(03), 315–320 (1971)CrossRefGoogle Scholar
  17. Let, M.S., Priscilla, K., Manichand, R.N., Seright, R.S.: Polymer flooding a \(\sim 500\)-cp oil. In: SPE Improved Oil Recovery Symposium. Society of Petroleum Engineers (2012)Google Scholar
  18. Levitt, D.B., Slaughter, W., Pope, G., Jouenne, S.: The effect of redox potential and metal solubility on oxidative polymer degradation. SPE Reserv. Eval. Eng. 14(03), 287–298 (2011)Google Scholar
  19. Lohne, A., Nødland, O., Stavland, A., Hiorth, A.: A model for non-Newtonian flow in porous media at different flow regimes. Comput. Geosci. 21(5–6), 1289–1312 (2017)CrossRefGoogle Scholar
  20. Lueftenegger, M., Kadnar, R., Puls, C., Clemens, T.: Operational Challenges and Monitoring of a Polymer Pilot, Matzen Field, Austria. SPE Production and Operations (2016)Google Scholar
  21. Maerker, J.: Shear degradation of partially hydrolyzed polyacrylamide solutions. Soc. Petrol. Eng. J. 15(04), 311–322 (1975)CrossRefGoogle Scholar
  22. Maerker, J.: Mechanical degradation of partially hydrolyzed polyacrylamide solutions in unconsolidated porous media. Soc. Petrol. Eng. J. 16(04), 172–174 (1976)CrossRefGoogle Scholar
  23. Manichand, R.N., Let, M.S., Kathleen, P., Gil, L., Quillien, B., Seright, R.S.: Effective propagation of HPAM solutions through the Tambaredjo reservoir during a polymer flood. SPE Prod. Oper. 28(04), 358–368 (2013)Google Scholar
  24. Morel, D., Zaugg, E., Jouenne, S., Danquigny, J., Cordelier, P.: Dalia/camelia polymer injection in deep offshore field angola learnings and in situ polymer sampling results. In: SPE Asia Pacific Enhanced Oil Recovery Conference. Society of Petroleum Engineers (2015)Google Scholar
  25. Nødland, O.M., Lohne, A., Stavland, A., Hiorth, A.: A model for non-Newtonian flow in porous media at different flow regimes. In: ECMOR XV-15th European Conference on the Mathematics of Oil Recovery (2016)Google Scholar
  26. Petzold, L.: Automatic selection of methods for solving stiff and nonstiff systems of ordinary differential equations. SIAM J. Sci. Stat. Comput. 4(1), 136–148 (1983)CrossRefGoogle Scholar
  27. Ryles, R.: Chemical stability limits of water-soluble polymers used in oil recovery processes. SPE Reser. Eng. 3(01), 23–34 (1988)CrossRefGoogle Scholar
  28. SciPy.org: scipy.integrate.LSODA. https://docs.scipy.org/doc/scipy/reference/generated/scipy.integrate.LSODA.html. Accessed 04 Sep. 2018
  29. Seright, R.S., Seheult, J.M., Talashek, T.: Injectivity characteristics of EOR polymers. In: SPE Annual Technical Conference and Exhibition. Society of Petroleum Engineers (2008)Google Scholar
  30. Seright, R., Skjevrak, I.: Effect of dissolved iron and oxygen on stability of HPAM polymers. In: SPE Improved Oil Recovery Symposium. Society of Petroleum Engineers (2014)Google Scholar
  31. Seright, R.S.: The effects of mechanical degradation and viscoelastic behavior on injectivity of polyacrylamide solutions. Soc. Petrol. Eng. J. 23(03), 475–485 (1983)CrossRefGoogle Scholar
  32. Seright, R.: Potential for polymer flooding reservoirs with viscous oils. SPE Reserv. Eval. Eng. 13(04), 730–740 (2010)Google Scholar
  33. Sharma, A., Delshad, M., Huh, C., Pope, G.A.: A practical method to calculate polymer viscosity accurately in numerical reservoir simulators. In: SPE Annual Technical Conference and Exhibition. Society of Petroleum Engineers (2011)Google Scholar
  34. Sheng, J.J., Leonhardt, B., Azri, N.: Status of polymer-flooding technology. J. Can. Petrol. Technol. 54(02), 116–126 (2015)CrossRefGoogle Scholar
  35. Sorbie, K.S.: Polymer-Improved Oil Recovery. Springer, Berlin (1991)CrossRefGoogle Scholar
  36. Spillette, A., Hillestad, J., Stone, H.: A high-stability sequential solution approach to reservoir simulation. In: Fall Meeting of the Society of Petroleum Engineers of AIME. Society of Petroleum Engineers (1973)Google Scholar
  37. Standnes, D.C., Skjevrak, I.: Literature review of implemented polymer field projects. J. Petrol. Sci. Eng. 122, 761–775 (2014)CrossRefGoogle Scholar
  38. Stavland, A., Jonsbroten, H., Lohne, A., Moen, A., Giske, N.: Polymer flooding-flow properties in porous media versus rheological parameters. In: Presented at the 72nd EAGE Conference and Exhibition Incorporating SPE EUROPEC, SPE-131103-MS (2010)Google Scholar
  39. Thomas, A., Gaillard, N., Favero, C.: Some key features to consider when studying acrylamide-based polymers for chemical enhanced oil recovery. Oil Gas Sci. Technol. Revue d’IFP Energies nouvelles 67(6), 887–902 (2012)CrossRefGoogle Scholar
  40. van den Hoek, P.J., Al-Masfry, R.A., Zwarts, D., Jansen, J.D., Hustedt, B., van Schijndel, L.: Waterflooding under dynamic induced fractures: reservoir management and optimisation of fractured waterfloods. In: SPE Symposium on Improved Oil Recovery. Society of Petroleum Engineers (2008)Google Scholar
  41. Wang, D., Han, P., Shao, Z., Hou, W., Seright, R.S.: Sweep-improvement options for the Daqing oil field. SPE Reserv. Eval. Eng. 11(01), 18–26 (2008)Google Scholar
  42. Wang, D., Dong, H., Lv, C., Fu, X., Nie, J.: Review of practical experience by polymer flooding at Daqing. SPE Reserv. Eval. Eng. 12(03), 470–476 (2009)Google Scholar
  43. Wreath, D., Pope, G., Sepehrnoori, K.: Dependence of polymer apparent viscosity on the permeable media and flow conditions. Situ USA 14(3), 263–284 (1990)Google Scholar
  44. Zechner, M., Buchgraber, M., Clemens, T., Gumpenberger, T., Castanier, L.M., Kovscek, A.R.: Flow of polyacrylamide polymers in the near-wellbore-region, rheological behavior within induced fractures and near-wellbore-area. In: SPE Annual Technical Conference and Exhibition. Society of Petroleum Engineers (2013)Google Scholar
  45. Zechner, M., Clemens, T., Suri, A., Sharma, M.M.: Simulation of polymer injection under fracturing conditions—an injectivity pilot in the Matzen field, Austria. SPE Reserv. Eval. Eng. 18(02), 236–249 (2015)Google Scholar

Copyright information

© Springer Nature B.V. 2019

Authors and Affiliations

  1. 1.The National IOR Centre of NorwayStavangerNorway
  2. 2.NORCE Norwegian Research Centre ASStavangerNorway
  3. 3.University of StavangerStavangerNorway

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