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In-Situ Stress State from Inversion of a New Elasto-Plastic Fracture Model
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 65th EAGE Conference & Exhibition, Jun 2003, cp-6-00100
Abstract
P271 IN-SITU STRESS STATE FROM INVERSION OF A NEW ELASTO-PLASTIC FRACTURE MODEL Summary 1 The paper presents an improved inversion method to determine the in-situ stress state from borehole fracturing measurements. A new elasto-plastic fracture model is derived based on laboratory measurements. An improvement in modeling of field data is demonstrated. Introduction The most important way to determine the in-situ state in wells is analysis of fracturing data. This paper presents an improved method. It is a common assumption that the borehole fracturing pressure is governed by the Kirsch equation. Furthermore this non-penetrating model is commonly assumed to define the