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51313-02247-Improving Risk Based Inspection with Molecular Microbiological Methods

Product Number: 51313-02247-SG
ISBN: 02247 2013 CP
Author: Michael Jensen
Publication Date: 2013
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$20.00
$20.00

The South Arne platform is located in the Danish Sector of the North Sea and commenced production from the chalk reservoir in 1999. In late 2008 increasing H2S scavenger consumption raised questions to the souring status of the field and the actual value of the implemented microbial monitoring strategy.

An investigation of the increasing H2S levels and the microbial monitoring program were initiated and molecular microbiological methods (MMM) were thereafter introduced as the preferred technology in the future microbial monitoring program. The improved monitoring program has drawn the attention to numerous optimization possibilities within operation practice and production chemistry application.

Lately the corrosion inspection program corrosion probe monitoring and microbial monitoring program have been aligned to feed appropriate input for a risk based inspection (RBI) program.

This paper describes three field cases with application of the new microbial monitoring program the decisions made based on analysis results and the implementation in the RBI program. The field cases include determination of reservoir souring microbes (sulphate reducing prokaryotes) microbial growth in the seawater injection facilities and microbiologically influenced corrosion (MIC) in the produced water system at the South Arne platform.

The South Arne platform is located in the Danish Sector of the North Sea and commenced production from the chalk reservoir in 1999. In late 2008 increasing H2S scavenger consumption raised questions to the souring status of the field and the actual value of the implemented microbial monitoring strategy.

An investigation of the increasing H2S levels and the microbial monitoring program were initiated and molecular microbiological methods (MMM) were thereafter introduced as the preferred technology in the future microbial monitoring program. The improved monitoring program has drawn the attention to numerous optimization possibilities within operation practice and production chemistry application.

Lately the corrosion inspection program corrosion probe monitoring and microbial monitoring program have been aligned to feed appropriate input for a risk based inspection (RBI) program.

This paper describes three field cases with application of the new microbial monitoring program the decisions made based on analysis results and the implementation in the RBI program. The field cases include determination of reservoir souring microbes (sulphate reducing prokaryotes) microbial growth in the seawater injection facilities and microbiologically influenced corrosion (MIC) in the produced water system at the South Arne platform.

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