EP 0646698 B1 19970806 - Method of evaluating the damage of rock structures in a well
Title (en)
Method of evaluating the damage of rock structures in a well
Title (de)
Verfahren zur Bewertung der Beschädigung von Gesteinsstrukturen im Bohrloch
Title (fr)
Procédé d'évaluation de l'endommagement de la structure d'une roche entourant un puits
Publication
Application
Priority
FR 9311665 A 19930930
Abstract (en)
[origin: EP0646698A1] Method for evaluating the damage to the structure of a rock (114) surrounding a well (110), comprising the following steps: - injecting into the rock (114), already saturated with a first fluid of a first viscosity, an oil of viscosity greater than the first viscosity, - recording the pressure of the injected oil as a function of time; - analysis of the change in the pressure of the injected oil in order to deduce the zones of different permeability present in the rock (114). <IMAGE>
IPC 1-7
IPC 8 full level
E21B 49/00 (2006.01)
CPC (source: EP US)
E21B 49/008 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB GR IE IT LI NL PT SE
DOCDB simple family (publication)
EP 0646698 A1 19950405; EP 0646698 B1 19970806; AT E156565 T1 19970815; CA 2133297 A1 19950331; CA 2133297 C 20050125; DE 69404796 D1 19970911; FR 2710687 A1 19950407; FR 2710687 B1 19951110; NO 306523 B1 19991115; NO 943614 D0 19940929; NO 943614 L 19950331; OA 09994 A 19960329; US 5477922 A 19951226
DOCDB simple family (application)
EP 94402167 A 19940929; AT 94402167 T 19940929; CA 2133297 A 19940929; DE 69404796 T 19940929; FR 9311665 A 19930930; NO 943614 A 19940929; OA 60566 A 19940930; US 31159194 A 19940923