EP 1144804 A1 20011017 - METHOD FOR DETECTING INFLOW OF FLUID IN A WELL WHILE DRILLING AND IMPLEMENTING DEVICE
Title (en)
METHOD FOR DETECTING INFLOW OF FLUID IN A WELL WHILE DRILLING AND IMPLEMENTING DEVICE
Title (de)
VERFAHREN ZUR ERKENNUNG EINES FLÜSSIGKEITSZUFLUSSES IM BOHRLOCH WÄHREND DES BOHRENS UND VORRICHTUNG ZUR DURCHFÜHRUNG DES VERFAHRENS
Title (fr)
PROCEDE DE DETECTION D'UNE VENUE DE FLUIDE DE FORMATION DANS UN PUITS EN COURS DE FORAGE ET DISPOSITIF POUR LA MISE EN OEUVRE DE CE PROCEDE
Publication
Application
Priority
- FR 9903267 W 19991223
- FR 9816363 A 19981223
Abstract (en)
[origin: WO0039433A1] The invention concerns a method for detecting inflow of fluid in a well while drilling, characterised in that the drilling is carried out using an installation comprising a hollow cylindrical drill string (3) wherein is injected fresh mud, a tubing (5) defining with the drill string (3) an annular space (7) through which the loaded mud rises; it consists in continuously measuring a heat flow; then in continuously calculating on the basis of said quantity the value of a characteristic representing a thermal equilibrium obtained in the absence of a fluid occurrence formation; and in detecting variations in said characteristic, said variations representing a thermal imbalance, resulting from inflow of fluid in the well (1). The invention is particularly applicable in operating oil drilling installations particularly deep at sea.
IPC 1-7
IPC 8 full level
E21B 21/08 (2006.01); E21B 47/10 (2012.01)
CPC (source: EP US)
E21B 47/103 (2020.05 - EP US)
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
WO 0039433 A1 20000706; AT E247222 T1 20030815; DE 69910438 D1 20030918; EP 1144804 A1 20011017; EP 1144804 B1 20030813; NO 20013116 D0 20010621; NO 20013116 L 20010823; NO 320180 B1 20051107; US 6540021 B1 20030401
DOCDB simple family (application)
FR 9903267 W 19991223; AT 99961157 T 19991223; DE 69910438 T 19991223; EP 99961157 A 19991223; NO 20013116 A 20010621; US 86903401 A 20010910