Ground surface displacements and tilt monitoring for reconstruction of reservoir deformations

摘要

Surface deformation generated during hydrocarbon production, and waste or water reinjection, can be used to indirectly monitor subsurface deformation sources. Forward and inverse models previously studied are mostly based on the nucleus of strain approach and are focused on measurements of vertical or horizontal deformations. The main objective of this study was to reconstruct subsurface deformations based on the unidirectional deformation technique and using combinations of tilt values as well as vertical displacements. A new numerical model was therefore developed. In order to stabilize the inverse ill-posed problem, a regularizatioh method was developed in this study.