On Reconstruction of the Three Displacement Vector Components from SAR LOS Displacements for Oil and Gas Producing Fields

SAR interferometry estimates Line-Of-Sight displacements of natural or man-made reflectors. To estimate all three components (e.g. north, east and up) of the displacement vector, it is necessary to use additional data or physical models of causative sources of the observed displacements. We propose a method to reconstruct the three components of the displacement vector at oil and gas exploration fields, based on an assumption that the registered LOS displacements are caused by a decrease or increase in seam pressure due to hydrocarbon extraction or fluid injection. We present an example of an evaluation of LOS displacements and the reconstruction of the three displacement vector components using SAR images for the Romashkino oil field near Almet’evsk city (Tatarstan Republic, Russian Federation).