EP 0323772 A1 19890712 - Drill string stabilizer with a clutch for rotation.
Title (en)
Drill string stabilizer with a clutch for rotation.
Title (de)
Stabilisator für einen Bohrstrang, der zur Rotation einkuppelbar ist.
Title (fr)
Centreur embrayable en rotation notamment pour garniture de forage.
Publication
Application
Priority
FR 8718088 A 19871223
Abstract (en)
The present invention relates to a device (1) for the centring of a lining, especially for a borehole, comprising at least one centring member (6, 2), relative to which said lining can rotate. This device is characterised in that it comprises progressive means (23, 24) for driving this member (6, 2) in rotation with said lining. <IMAGE>
Abstract (fr)
La présente invention concerne un dispositif centreur (1) de garniture, notamment de forage, comportant au moins un organe centreur (6,2) relativement auquel ladite garniture peut tourner. Ce dispositif se caractérise en ce qu'il comporte des moyens progressifs d'entrainement en rotation (23, 24) de cet organe (6,2) avec ladite garniture.
IPC 1-7
IPC 8 full level
E21B 17/02 (2006.01); E21B 17/10 (2006.01)
CPC (source: EP US)
E21B 17/1064 (2013.01 - EP US)
Citation (search report)
- [A] US 2815930 A 19571210 - STORM LYNN W
- [A] GB 2088440 A 19820609 - MOBIL OIL CORP
- [A] US 4083612 A 19780411 - OLSON WALLACE FRED
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
EP 0323772 A1 19890712; EP 0323772 B1 19920318; DE 3869373 D1 19920423; FR 2625253 A1 19890630; NO 885690 D0 19881221; NO 885690 L 19890626; US 4989679 A 19910205
DOCDB simple family (application)
EP 88403113 A 19881208; DE 3869373 T 19881208; FR 8718088 A 19871223; NO 885690 A 19881221; US 28808688 A 19881222