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Abstract

Summary

In this study, distributed fiber optic strain sensing (DFOSS) was employed in a monitoring well with a depth of 750 meters within a Water-Alternating-Gas Injection field. Over 19 months, we monitored water production/ injection from various production layers at different depths and from different production wells at monitoring distances ranging from 1 to 5.5 kilometers. Our findings demonstrate successful strain capture using DFOSS, affirming its capability to monitor pressure communication within a 5.5-kilometer diameter area. This technology holds promise for CO2 storage site applications as a cost-effective tool, especially when deployed between the injector and adjacent faults within the area of review to evaluate faults stability and ensure CO2 injection sites safety.

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/content/papers/10.3997/2214-4609.202475004
2024-08-14
2026-02-08
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References

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