EP 0171335 B1 19880323 - DRILLING ROD JOINT, ESPECIALLY FOR TRAVERSING THE ZONES OF LOST CIRCULATION
Title (en)
DRILLING ROD JOINT, ESPECIALLY FOR TRAVERSING THE ZONES OF LOST CIRCULATION
Publication
Application
Priority
FR 8412510 A 19840808
Abstract (en)
[origin: US4583603A] A drill pipe joint for insertion in a drill pipe comprises a body having an axial bore therethrough and comprising generally cylindrical upper and lower portions and a widened cylindrical intermediate portion at the upper end of which at least three cutouts are formed for insertion therein of removable attached members each provided with an upwardly directed internal passage connecting the bore to an interchangeable nozzle mounted in the upper end of the passage and situated on a diameter intermediate the outside diameter of the intermediate portion and that of the upper portion of the body. The joint is particularly suitable for passing through a zone in which circulation is lost and is arranged in the drill pipe string above the level of the zone of lost circulation.
IPC 1-7
IPC 8 full level
E21B 17/046 (2006.01); E21B 17/04 (2006.01); E21B 17/10 (2006.01); E21B 17/18 (2006.01); E21B 21/00 (2006.01); E21B 41/00 (2006.01)
CPC (source: EP US)
E21B 17/042 (2013.01 - EP US); E21B 17/10 (2013.01 - EP US); E21B 41/0078 (2013.01 - EP US)
Designated contracting state (EPC)
BE CH DE IT LI NL SE
DOCDB simple family (publication)
EP 0171335 A1 19860212; EP 0171335 B1 19880323; AU 4569885 A 19860213; AU 554099 B2 19860807; CA 1241944 A 19880913; DE 3561962 D1 19880428; ES 295877 U 19870616; ES 295877 Y 19871216; FR 2568935 A1 19860214; FR 2568935 B1 19860905; GB 2162881 A 19860212; GB 2162881 B 19871118; GB 8518104 D0 19850821; JP H0643792 B2 19940608; JP S6153991 A 19860318; NO 169187 B 19920210; NO 169187 C 19920520; NO 853118 L 19860210; US 4583603 A 19860422
DOCDB simple family (application)
EP 85401608 A 19850807; AU 4569885 A 19850801; CA 485854 A 19850628; DE 3561962 T 19850807; ES 295877 U 19850807; FR 8412510 A 19840808; GB 8518104 A 19850718; JP 17495285 A 19850808; NO 853118 A 19850807; US 75825885 A 19850724