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Abstract

Summary

A key challenge to implement DAS in subsea wells is the limited capability of existing DAS interrogators to operate over several kilometres of lead-in cable and wet-mate connector losses. We report here the results from an experiment performed with a new DAS interrogator in a simulated subsea well scenario. We demonstrate that DAS can be adopted to subsea well interrogation utilizing standard single mode optical fibres without any need for specialized or engineered fibre. Even with 10 dB additional loss (one-way) from lead-in fibre and wet-mate connectors, marginal impact on the instrument self-noise is observed.

© EAGE Publications BV
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/content/papers/10.3997/2214-4609.202131025
2021-03-01
2024-04-26

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References

  1. Kiyashchenko, D. et al.
    [2019] 4D DAS VSP for on-demand seismic monitoring in Deepwater.SEG International Exposition and 89th Annual meeting Extended Abstracts, 5285–5289.
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  3. Waagaard, O.H. et al.
    [2020] Real-time phase-recording DAS in 171 km low-loss fiber. Submitted to International Conference on optical Fibre Sensors, OFS 2020.
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  4. SEAFOM
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http://instance.metastore.ingenta.com/content/papers/10.3997/2214-4609.202131025
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DAS interrogation on standard single mode fibres in long tie-back subsea wells
Conference Proceedings 2021, 1 (2021); https://doi.org/10.3997/2214-4609.202131025
/content/papers/10.3997/2214-4609.202131025
/content/papers/10.3997/2214-4609.202131025
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