EP 1081330 A3 20010502 - Downhole mud diverter tools
Title (en)
Downhole mud diverter tools
Title (de)
Vorrichtungen zur Spülungsumlenkung in einem Bohrloch
Title (fr)
Outils déflecteurs de boue de forage en fond de puits
Publication
Application
Priority
GB 9920731 A 19990903
Abstract (en)
[origin: EP1081330A2] A downhole fluid diverter tool (10) has an axial through-bore (13) and fluid passages (18) extending through its side wall. Normally-closed pressure-actuated valve means (20) are located in the fluid passages whereby a proportion of a flow of drilling fluid passing through the cylindrical body may be diverted through the fluid passages (18) by increasing the fluid pressure in the interior of the tool such that the valve means (10) open. Each valve means (20) includes a piston member (28) housed in the side wall and movable in a direction parallel to said longitudinal axis so as to open and close said fluid passage. Each piston member (28) is slidably located in a bore which extends parallel to the longitudinal axis of the tool, said bore having a concave end surface (36), said fluid passage intersecting said concave end surface, said piston member (28) having a generally convex complementary end surface adapted to seat against said concave end surface so as to close said fluid passage, and said valve means further including bias means for urging said convex end surface of said piston (28) into engagement with said concave end surface (36) of said bore. The valve means (20) comprises a housing adapted to be located in a pocket formed in the exterior surface of the body of the tool (10).
IPC 1-7
IPC 8 full level
E21B 21/10 (2006.01)
CPC (source: EP)
E21B 21/103 (2013.01)
Citation (search report)
- [XY] US 5584352 A 19961217 - BEAVERS ROGER L [US]
- [DY] WO 9604458 A1 19960215 - STEWART ARTHUR DEACEY [GB], et al
- [A] US 3334697 A 19670808 - EDWARDS JACK H, et al
- [A] EP 0322170 A2 19890628 - GAS RES INST [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)
EP 1081330 A2 20010307; EP 1081330 A3 20010502; GB 9920731 D0 19991103; NO 20004367 D0 20000901; NO 20004367 L 20010305
DOCDB simple family (application)
EP 00307400 A 20000829; GB 9920731 A 19990903; NO 20004367 A 20000901