| InSAR time series investigation of land surface deformation in Azar oilfield |
| Paper ID : 1123-SMPR |
| Authors: |
|
Zahra Mirzaii *1, Mahdi Hasanlou2, Sami Samieie-Esfahany3, Mahdi Rojhani4, Parviz Ajourlou1 1School of Surveying and Geospatial Engineering, College of Engineering, University of Tehran 2School of Surveying and Geospatial Engineering, College of Engineering, University of Tehran, Tehran, Iran 3School of Surveying and Geospatial Engineering, College of Engineering, University of Tehran; 4Department of Civil Engineering, Faculty of Engineering, Shahed University; m.rojhani@shahed.ac.ir |
| Abstract: |
| Time-series interferometric synthetic aperture radar (InSAR) has developed as an influential method to measure various surface deformation. One of the generations of time-series InSAR methodologies is Persistent Scatterer Interferometry (PSI) that focus on targets with a high correlation over time. In this study we have measured the surface deformation in Azar oil field utilizing time series analysis. Azar Oil Field is one of Iran's oil fields. This oilfield is located in the east of the city of Mehran, Ilam. The reservoir of this oilfield is shared by Iraq oil field whose name is Badra where oil extraction started in 201409. While Iran started oil exploration in 201709, Iraq has maximized its oil exploration ever since. The Stanford Method for Persistent Scatterers (StaMPS) package has been employed to process 20 ENVISAT-ASAR images collected between 2003 and 2009 and 50 Sentinel-1 satellite images collected between 2014 and 2019. Due to the high depth of oil wells (4,300 kilometres), as well as stone type of the region’s bed in some areas, we want to calculate that magnitude of subsidence. The results show the maximum displacement rate in this area is 20 mm between 2014 and 2019 in the radar line of sight direction but no subsidence took place between 2003 and 2009. Also, since 2017, with the onset of Iran’s oil extraction and the intensification of Iraq's oil exploration, subsidence has taken place with a steeper slope. The displacement of the area before and after this date is modelled with two lines. |
| Keywords: |
| Persistent Scatterers Interferometry, Azar oil field, displacement, Interferometric synthetic-aperture radar (InSAR), oil extraction |
| Status : Conditional Accept (Poster) |
