(19)
(11)
EP 0 695 427 A1
(12)
(43)
Date of publication:
07.02.1996
Bulletin 1996/06
(21)
Application number:
95909840.0
(22)
Date of filing:
17.02.1995
(51)
International Patent Classification (IPC):
G01N
15/
08
( . )
G01N
33/
24
( . )
G01N
27/
72
( . )
G01V
3/
26
( . )
(86)
International application number:
PCT/FR1995/000188
(87)
International publication number:
WO 1995/022809
(
24.08.1995
Gazette 1995/36)
(84)
Designated Contracting States:
DE FR GB IT NL
(30)
Priority:
22.02.1994
FR 19940001965
(71)
Applicants:
COMPAGNIE GENERALE DE GEOPHYSIQUE
F-91341 Massy Cédex (FR)
Pozzi, Jean-Pierre
F-92190 Meudon (FR)
(72)
Inventors:
POZZI, Jean-Pierre
F-92190 Meudon (FR)
MARTIN, Jean-Pierre
92250 La Garenne-Colombes (FR)
(74)
Representative:
Flavenot, Bernard
Société ABRITT 17, rue du Docteur Charcot La Norville
F-91290 Arpajon
F-91290 Arpajon (FR)
(54)
METHOD AND DEVICE FOR EVALUATING THE PERMEABILITY OF A ROCK MEDIUM