E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 17/02 (2006.01) E21B 17/046 (2006.01) E21B 17/06 (2006.01) E21B 34/14 (2006.01)
Patent
CA 2123357
Abstract of the Disclosure A tubular connector for connecting a drilling tool assembly to a drill string for use in CTD operations. The connector has a fluid flow passage therethrough, and comprises: a first part including means for fixing to the drill string and a second part including means for fixing to the drilling tool assembly; inter engaging formations such as splines provided on the first and second parts such that, when engaged, said formations do not prevent relative axial movement of the first and second parts but prevent relative rotation thereof; a threaded collar provided around adjacent end portions of the first and second parts for axial location thereof when connected. The connector can also include a non-return valve assembly located in the fluid flow passage; a pressure actuated piston device in the fluid flow passage for disconnecting the drilling tool assembly from the drill string; and a pressure actuated valve which, when operated, allows fluid communication between the fluid flow passage and an exterior region of the connector.
Schlumberger Canada Limited
Smart & Biggar
LandOfFree
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