Document Type : Original Research Paper
Authors
1 Remote Sensing and GIS Group, Department of Earth Sciences, Shahid Beheshti University, Tehran, Iran.
2 Faculty of Geodesy & Geomatics Engineering, K.N.Toosi University of Technology, Tehran, Iran.
3 International Institute of Earthquake Engineering and Seismology, Tehran, Iran.
Abstract
Hydrocarbon fluid extraction from high compactable and low permeable reservoirs resulted in gradual surface deformation that causes significant costs due to overburden failures. However, surveying benchmarks make it possible to compare the repeated leveling measurements at the specific locations, then it is necessary to introduce an effective method that is more real time and cost-effective. Differential SAR interferometry (DInSAR) is a new technology in which satellite images are used for field surface displacement monitoring. In this method, the high resolution images derived from Radar measurements are used for surface deformation rates assessment to improve the management and mitigation of traditional production costs. In this study, surface displacements caused by fluid withdrawal in Aghajari oil field are presented using Radar observations as the InSAR data reveal both subsidence and uplift signals for each production and observation wells distributed over the site. A number of production site inspections in a time series of interferograms reveal that the surface deformation signals developed due to extraction in several months as well as different subsidence or uplift rates and deformation styles occur locally depending on the geological conditions and excavation rates.
Keywords
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