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1. (WO1997019251) DOWNHOLE ARRANGEMENT FOR DOWNHOLE SAMPLING IN OIL WELLS
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1997/019251 International Application No.: PCT/FR1996/001856
Publication Date: 29.05.1997 International Filing Date: 22.11.1996
Chapter 2 Demand Filed: 16.06.1997
IPC:
E21B 49/08 (2006.01)
E FIXED CONSTRUCTIONS
21
EARTH OR ROCK DRILLING; MINING
B
EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
49
Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
08
Obtaining fluid samples or testing fluids, in boreholes or wells
Applicants:
SCIENCE SUPPORT SERVICES [FR/FR]; 6, rue Louis-Blériot F-42330 Saint-Galmier, FR (AllExceptUS)
WILLIAMS, John [FR/FR]; FR (UsOnly)
Inventors:
WILLIAMS, John; FR
Agent:
RICHEBOURG, Michel; Cabinet Michel Richebourg "Le Clos du Golf" 69, rue Saint-Simon F-42000 Saint-Etienne, FR
Priority Data:
95/1406123.11.1995FR
Title (EN) DOWNHOLE ARRANGEMENT FOR DOWNHOLE SAMPLING IN OIL WELLS
(FR) CONFIGURATION DE FOND DE PUITS PETROLIER POUR ECHANTILLONNAGE DE FOND
Abstract:
(EN) A downhole arrangement for oil wells and the like, wherein the fluid flow path to the bottom of the well is extended below the productive horizon, and forced circulation is thereby produced to take advantage of the effects of gravity on the fluid pressure, while phase segregation problems are reduced or eliminated. As a result, substantially enhanced downhole sampling quality is achieved, and said arrangement constitutes an approach that is compatible with any kind of fluid deposit, particularly saturated condensate gases.
(FR) L'invention concerne une configuration de fond de puits pétrolier ou analogue selon laquelle on prolonge le chemin parcouru par le fluide vers le fond du puits au dessous de la couche protectrice; on crée ainsi une circulation forcée pour bénéficier de l'effet de gravité sur la pression du fluide, et ainsi réduire ou éliminer des problèmes de ségrégation de phases. Il en résulte une bien meilleure qualité de l'échantillonnage de fond effectué, et l'invention constitue une approche compatible avec tout type de fluide de gisement, notamment avec les gaz à condensat saturés.
Designated States: NO, US
European Patent Office (AT, BE, CH, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
Publication Language: French (FR)
Filing Language: French (FR)