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1. (WO2012092131) STRESS IN FORMATIONS FROM AZIMUTHAL VARIATION IN ACOUSTIC AND OTHER PROPERTIES

Pub. No.:    WO/2012/092131    International Application No.:    PCT/US2011/066874
Publication Date: Fri Jul 06 01:59:59 CEST 2012 International Filing Date: Fri Dec 23 00:59:59 CET 2011
IPC: G01V 1/40
E21B 47/00
G01V 1/50
Applicants: BAKER HUGHES INCORPORATED
MOOS, Daniel
Inventors: MOOS, Daniel
Title: STRESS IN FORMATIONS FROM AZIMUTHAL VARIATION IN ACOUSTIC AND OTHER PROPERTIES
Abstract:
The present disclosure is related to methods and apparatuses for acoustic velocity well logging. The method may include estimating a magnitude of a principal horizontal stress in a borehole in a formation. The method may include obtaining a far field stress orientation and making a measurement of near borehole stress orientation. The present disclosure also includes an apparatus configured to be conveyed into a borehole and perform the method. Formation stresses and directions may be estimated.