Interferometric Synthetic Aperture Radar (InSAR) Measurement and Its Inversion for Monitoring Steam Assisted Gravity Drainage (SAGD) Process

Khakim, Mokhamad Yusup Nur (2010) Interferometric Synthetic Aperture Radar (InSAR) Measurement and Its Inversion for Monitoring Steam Assisted Gravity Drainage (SAGD) Process. Proceedings of The Bali 2010 International Geosciences Conference and Exposition,, 1 (1). pp. 1-6.

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Abstract

Vertical displacements in bituminous oil sand field associated with steam chamber development undergoing SAGD (Steam Assisted Gravity Drainage) were estimated by using Synthetic Aperture Radar Interferometry (InSAR) technology which can take images of objects at a high spatial resolution under all weather conditions and at all time. To monitor the performance of the SAGD process, the reservoir deformations should be analyzed especially around injection and production wells in reservoir. Developed InSAR processing has been carried out to obtain accurate surface deformations. The unwrapped differential interferogram refinement, stacking technique, and trend removal are applied to attenuate some noises which inherently present in InSAR data. Poor offset estimation occured in geocoding look-up table creation; therefore the Landsat ETM+ was required to refine the look-up table. Maximum estimated vertical displacement rate is around 3.8 cm/year from 2007 to 2008. Based on Okada’s model, an inversion of the surface uplift using genetic algorithms can provide the location of displacement sources. While the least�square method was used to efficiently invert distribution of source opening in subsurface from the surface uplift data. From the genetic algorithms the depth of displacement sources is 297 meters. The maximum vertical displacement at the depth obtained from least-square inversion is 4.5 cm. The results show that the inversion results have a good agreement with that of real data. Moreover, surface deformations from forward modeling are comparable to real data estimated by InSAR. As conclusion, the InSAR technology combined with inversion techniques is powerful tools for monitoring reservoir deformations undergoing SAGD process

Item Type:	Article
Subjects:	#3 Repository of Lecturer Academic Credit Systems (TPAK) > Articles Access for TPAK (Not Open Sources)
Divisions:	08-Faculty of Mathematics and Natural Science > 45102-Physics (S2)
Depositing User:	Mokhamad Yusup Nur Khakim
Date Deposited:	15 Jun 2023 15:46
Last Modified:	15 Jun 2023 15:46
URI:	http://repository.unsri.ac.id/id/eprint/109884

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