Open AccessAn approach to constrain maximum horizontal stress magnitude using wellbore Failure observations from image logs
Author(s) -
Quang Khanh
Publication year - 2017
Publication title -
khoa học công nghệ
Language(s) - English
Resource type - Journals
ISSN - 1859-0128
DOI - 10.32508/stdj.v20ik4.1111
Subject(s) - magnitude (astronomy) , geology , stress (linguistics) , polygon (computer graphics) , wellbore , stress field , geotechnical engineering , petroleum engineering , structural engineering , engineering , physics , finite element method , philosophy , linguistics , astronomy , telecommunications , frame (networking)
The magnitude of the maximum horizontal stress is generally the most challenging term in estimating the full stress tensor. In this paper, an approach to constrain the magnitude of the maximum horizontal stress using the frictional limits to stress and wellbore failure observations (drilling-induced tensile fractures DITFs and/or breakouts BOs) from image logs is presented. This approach is applied to constrain the magnitude of the maximum horizontal stress at some interest depths (3900 m, 4100 m, 4300 m and 4500 m) of the basement reservoirs at the White Tiger field, Cuu Long basin, Vietnam from the program STRESS POLYGON. The occurrence of DITFs and/or BOs proved to be useful in estimating stresses around the wellbore, especially the maximum horizontal stress magnitude.