EP 0244317 A1 19871104 - Device for drilling wells with lateral branches.
Title (en)
Device for drilling wells with lateral branches.
Title (de)
Vorrichtung zum Herstellen von Bohrungen mit Abzweigungen.
Title (fr)
Perfectionnements aux dispositifs de forage de puits ramifié.
Publication
Application
Priority
FR 8606256 A 19860430
Abstract (en)
[origin: US4800966A] A device for drilling lateral boreholes from a cased parent well comprises selecting and coupling means adapted to cooperate with a deflection unit placed within the parent well. The selecting and coupling means are mounted at the lower end of an extension unit formed by interassembled tubular elements. The upper end of the extension unit is rigidly fixed to a suspension swivel within the wellhead and at least one slip joint is interposed between two tubular elements. The internal diameter of each tubular element is such that a drilling packer can be housed within the tubular elements.
Abstract (fr)
Dispositif de forage de puits ramifie comprenant des moyens de sélection et de raccordement (3) constitués par des éléments tubulaires (5, 6a, 6b, 28) et dont l'extrémité supérieure est solidaire de moyens de suspension (29), un joint coulissant (8) étant interposé entre deux éléments (6a, 6b) le diamètre de chacun des éléments (5, 6a, 6b, 28) étant tel qu'une garniture de forage (60) puisse être logée dans lesdits éléments tubulaires.
IPC 1-7
IPC 8 full level
E21B 7/06 (2006.01); E21B 7/08 (2006.01); E21B 17/00 (2006.01); E21B 17/07 (2006.01); E21B 41/00 (2006.01)
CPC (source: EP US)
E21B 7/061 (2013.01 - EP US); E21B 17/00 (2013.01 - EP US); E21B 17/07 (2013.01 - EP US); E21B 41/0035 (2013.01 - EP US)
Citation (search report)
- [AD] US 4396075 A 19830802 - WOOD EDWARD T [US], et al
- [AD] US 4415205 A 19831115 - REHM WILLIAM A [US], et al
- [AD] EP 0136935 A1 19850410 - ELF AQUITAINE [FR]
- [A] US 4444276 A 19840424 - PETERSON JR DEWEY L [US]
- [A] GB 2060804 A 19810507 - BAKER INT CORP
- [A] GB 1114849 A 19680522 - JOY MFG CO
Designated contracting state (EPC)
DE FR NL SE
DOCDB simple family (publication)
EP 0244317 A1 19871104; EP 0244317 B1 19890111; AU 586332 B2 19890706; AU 7210287 A 19871105; CA 1276624 C 19901120; DE 3760035 D1 19890216; ES 2005195 A6 19890301; FR 2598175 A1 19871106; FR 2598175 B1 19880722; GB 2189828 A 19871104; GB 2189828 B 19891129; GB 8710161 D0 19870603; IT 1203946 B 19890223; IT 8720209 A0 19870422; NO 177762 B 19950807; NO 177762 C 19951115; NO 871788 D0 19870429; NO 871788 L 19871102; OA 08590 A 19881130; US 4800966 A 19890131
DOCDB simple family (application)
EP 87400968 A 19870427; AU 7210287 A 19870427; CA 536068 A 19870430; DE 3760035 T 19870427; ES 8701236 A 19870427; FR 8606256 A 19860430; GB 8710161 A 19870429; IT 2020987 A 19870422; NO 871788 A 19870429; OA 59113 A 19870429; US 4433387 A 19870430