Geostatistics application in spatial analysis of geomechanical properties

Abstract

Geomechanics applications play an important role in both drilling and production of oil and gas field. There are many important properties such as Unconfined compression strength (UCS), Poison ratio (PR), Internal Friction Coefficient (IF) and Porosity (PHIE) need to be estimated properly. To estimate these properties, there are many methods that can be used but geostatistics has more advantages. This research presents geomecanical propertiesfor two offset wells according to experiment relations existing. Then, variogramand spatial continuity will be analyzed. The Ordinary-Kriging (OK) methods will be used to interpolatethe properties in the cross section between two offset wells and then for a planned well. The predicted properties were compared with the actual measured data to find the linear correlation coefficient. Most of these values arenearly 1. As a result, the quality of the modelbuilt could be practically accurate and reliable to predict geomechanical properties for planned wells used in wellbore stability, sanding studies.