枯渇油ガス田におけるCO₂貯留の安全性評価

Unofficial AI-generated summary based on the public title and abstract. Not an official translation.

🔬研究者:Provides a new monitoring technique (NPEMFE) for CO₂ storage integrity, with empirical correlation to reservoir pressure, warranting further investigation in diverse geological settings.

🏢実務担当者:Offers a potential low-cost, real-time monitoring option for CCS sites, but requires pilot testing and integration with existing monitoring protocols.

🏛政策担当者:Highlights the importance of robust monitoring for CCS projects; this method could inform future regulatory guidelines for storage site safety.

Research relevance is determined by the need for safe geological storage of carbon dioxide as part of the implementation of carbon capture, transport and storage (CCS/CCUS) technologies. Study aimed to assess safety of CO₂ storage in depleted oil and gas reservoirs and to justify the feasibility of use of the natural pulsed Earth electromagnetic field (NPEMFE) method for real-time monitoring of reservoir pressure and the identification of potential fluid migration pathways. The research methodology was based on an analysis of the results of experimental geophysical studies conducted at the Dolynskyi oilfield research site in the western region of Ukraine, as well as on the application of spatial correlation analysis to establish relationships between NPEMFE parameters and reservoir pressure. Depleted hydrocarbon fields were considered as promising sites for long-term CO₂ sequestration due to their significant storage capacity, proven leak-tightness and existing production infrastructure. The study established a regular relationship between reservoir pressure and NPEMFE parameters. An inverse relationship was identified, whereby an increase in reservoir pressure is accompanied by a decrease in the intensity of the NPEMFE, whilst a decrease in reservoir pressure increases electromagnetic activity. Study demonstrated that changes in the intensity of the NPEMFE are associated with stress redistribution processes within the rock mass. The anisotropic nature of the spatial distribution of NPEMFE anomalies has been established, reflecting the directions of fluid flow and zones of increased permeability. Correlation analysis has confirmed the existence of a relationship between changes in the natural electric field and formation pressure. A conceptual approach has been developed for organisation of a geophysical monitoring system for CO₂ geological storage sites, based on regular observations of NPEMFE parameters, which can be used for early detection of potential hydrocarbon migration pathways and storage integrity breaches. The practical value of the results obtained is determined by their potential use by specialists in the oil and gas industry, geoecology and geophysical monitoring to monitor the condition of underground CO₂ storage sites, assess the risks of leaks and improve the environmental and technological safety of geological carbon storage

• semanticscholar https://mining-journal.com.ua/web/uploads/pdf/Mining Journal of Kryvyi Rih National University Vol 60, No 1, 2026-46-59.pdffirst seen 2026-09-08 05:17:18 · last seen 2026-09-22 05:05:48