Abstract
Gas leakage can cause serious safety risks to offshore engineering facilities and offshore engineering projects. Monitoring the migration of gas in sediments is of great significance to the safety of marine engineering. In this study, we analysed the ability of ring-electrode resistivity probes (REPs) and circular point-electrode resistivity probes (CPEPs) to monitor the migration, accumulation, and release of gas in multilayered sediments (when the particle size of the overlying soil is smaller) using two groups of gas injection experiments with different gas injection pressures. In addition, the ability of REPs to monitor lateral gas migration was analysed by numerical simulations. The experimental results show that the two probes have different monitoring capabilities for different gas migration stages in multilayered sediments. REPs can effectively reflect the different stages of gas migration within the monitoring range according to the variation characteristics of the monitoring results, and they can effectively monitor the pattern, direction, and rate of gas migration. CPEPs are more sensitive, that is, the range of their monitoring results is about 10 times that of the REPs. They can accurately estimate the changes in the gas saturation of the soil around the probe.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
