DInSAR for Geomechanical Reservoir Analysis – Application to Reservoir Lagunillas Lower 07, Lake Maracaibo, Venezuela
Abstract
This study applied Differential Interferometry Synthetic Aperture Radar (DInSAR) to monitor subsidence in the Lagunillas Inferior 07 (LGINF-07) reservoir within the Lagunillas Lago Field, in the Lake Maracaibo Basin, Venezuela. Since 1926, geodetic measurements have recorded ground movements in this critical region for the Venezuelan oil industry. DInSAR enabled precise data collection without requiring physical presence in the field, resulting in significant cost and time savings. The results revealed progressive subsidence on the oil platforms located in Lake Maracaibo, belonging to the Lagunillas Lago production unit with an average annual rate of -0.035 meters/year. This data updated an existing geomechanical model, improving understanding of subsidence and anticipating future ground movements. This advancement is crucial for infrastructure planning and the safety of oil operations in the region. The study highlights the effectiveness of DInSAR in environmental management and geological monitoring, with significant implications for the national O& industry.
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References
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