Identification of stress in formations using angles of fast...

Details Identification of stress in formations using angles of fast... Identification of stress in formations using angles of fast...

E - Fixed Constructions

21

B

E21B 47/00 (2006.01) G01V 1/00 (2006.01)

Patent

CA 2712271

Cross-dipole measurements are obtained in a borehole. By estimating a direction of polarization of the fast shear mode at low and high frequencies and comparing the estimated distances, a cause of anisotropy is established. Formation stresses and directions may be estimated.

L'invention concerne des mesures de dipôles croisés dans un trou de forage. En estimant la direction de polarisation du mode de cisaillement rapide à des fréquences faible et élevée et en comparant les distances estimées, une cause d'anisotropie est établie. Des contraintes et des directions de formation peuvent être estimées.

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