Building a 3D Geomechanical Model of a Gas Field for Geohazard Prediction

G-36 BUILDING A 3D GEOMECHANICAL MODEL OF A GAS FIELD FOR GEOHAZARD PREDICTION Abstract 1 Land subsidence triggered earthquakes and wellbore instabilities are some examples of geohazards caused by or related to the production of subsurface natural resources and storage of energy residues in the deep subsurface. The main objective of geomechanical modelling is to effectively predict surface and subsurface deformation and damage due to exploitation/ storage of subsurface natural resources/energy residues. This objective is commonly achieved through a two-dimensional stress analysis which in many cases tends to oversimplify the geological structure and the importance of pre-existing tectonic stresses. We