Problems Caused by Microbes and Treatment Strategies The Effect of Nitrate Injection in Oil Reservoirs – Experience with Nitrate Injection in the Halfdan Oilfield

Conference paper

Abstract

This chapter deals with the use of nitrate injection for reservoir souring mitigation in an oilfield with seawater injection in the Danish sector of the North Sea. Nitrate impacts on the activity of sulphate-reducing bacteria (SRB) and biofilm redox potential (Larsen et al., 2007), as a result of which corrosion due to SRB activity will be reduced, souring inhibited and previously formed sulphide removed (Larsen, 2002). One important aspect is that the microbiological reduction of nitrate provides approximately three times more energy to SRB than the reduction of sulphate. Therefore, when both nitrate and sulphate are present, nitrate becomes the preferred electron acceptor and SRB capable of growing on nitrate will dominate. Nitrate provides a competitive advantage to nitrate-utilising bacteria (indicated by the general acronym NUB) during competition for available carbon sources as the NUB are capable of much faster growth than SRB.

Keywords

Horizontal Well Total Bacterial Count Fish Technique Total Bacterial Abundance Nitrate Injection 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgements

Laboratory experiments and field monitoring were sponsored by DUC Partners (A.P. Møller-Mærsk, Shell and Chevron).

References

  1. Albrechtsen T, Andersen SJ, Dons T, Engstrøm F, Jørgensen O, Sørensen FW (2001) Halfdan: developing non-structurally trapped oil in north sea chalk. SPE 71322, 2001 SPE annual technical conference, New Orleans, LAGoogle Scholar
  2. Herbert BN, Gilbert PD, Stockdale H, Watkinson RJ (1985) Factors controlling the activity of SRB in reservoirs during water injection. SPE Paper 13978Google Scholar
  3. Krekeler D, Cypionka H (1994) The preferred electron-acceptor of Desulfovibrio salixigens. Arch Microbiol 161:271–277Google Scholar
  4. Larsen J (2002) Downhole nitrate applications to control sulfate reducing bacteria activity and reservoir souring (Corrosion 2002, Paper No. 02025). NACE International, Houston, TXGoogle Scholar
  5. Larsen J, Dunsmore B, Schwermer C (2007) Investigation into Halfdan water injection biofilm using chemical microsensors (Corrosion 2007, Paper No. 07507). NACE International, Houston, TXGoogle Scholar
  6. Larsen J, Rod MH, Zwolle S (2004) Prevention of reservoir souring in the Halfdan field by nitrate injection (Corrosion 2004, Paper No. 04761). NACE International, Houston, TXGoogle Scholar
  7. Larsen J, Skovhus TL, Agerbæk M, Thomsen TR, Nielsen PH (2006) Bacterial diversity study applying novel molecular methods on Halfdan produced waters (Corrosion 2006, Paper No. 06668). NACE International, Houston, TXGoogle Scholar
  8. Price A, Álvarez LA, Whitby C, Larsen J (2010) Detection of SRP activity by quantification of mRNA for the dissimilatory (bi) sulfite reductase gene (dsrA) by reverse transcription quantitative PCR (Corrosion 2010, Paper No. 10253). NACE International, Houston, TXGoogle Scholar
  9. Reinsel MA, Sears JT, Stewart PS, Mclnerney MJ (1996) Control of microbial souring by nitrate, nitrite or glutaraldehyde injection in a sandstone column. J Ind Microbiol 17:128CrossRefGoogle Scholar
  10. Skovhus TL, Højris B, Saunders AM, Thomsen TR, Agerbæk M, Larsen J (2009) Practical use of new microbiology tools in oil production. SPE Production & Operations 24:180–186Google Scholar
  11. Voordouw G, Nemati M, Jenneman GE (2002) Use of nitrate-reducing, sulfide-oxidizing bacteria to reduce souring in oil fields: interactions with SRB and effects on corrosion (Corrosion 2002, Paper No. 02034). NACE International, Houston, TXGoogle Scholar

Copyright information

© Springer Netherlands 2010

Authors and Affiliations

  1. 1.Maersk Oil and Gas ASCopenhagen KDenmark
  2. 2.Danish Technological Institute, DTI Oil & GasAarhusDenmark

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