Coupling for dual member pipe

Details Coupling for dual member pipe Coupling for dual member pipe

2007-05-15

2007-05-15

Neuder, William P (Department: 3672)

Boring or penetrating the earth

Boring without earth removal

C175S073000, C175S320000

Reexamination Certificate

active

10878482

ABSTRACT:
A coupling assembly to interconnect an inner member and an outer member of a dual member drill string in torque transmitting engagement is disclosed. The coupling assembly is adapted to transmit torque input from both members to a downhole tool. In one embodiment, the coupling assembly comprises a connector sub that fixedly and non-fixedly couples both members. In another embodiment, the coupling assembly comprises a clutch mechanism to interconnect both members when the rotational speed of the outer member exceeds the rotational speed of the inner member. In another embodiment, the coupling assembly comprises a mechanism to couple both members by axial downhole movement of the inner member relative to the outer member. In another embodiment, the coupling assembly comprises a planetary gear system that interconnects both members to provide high torque to the downhole tool at relatively low output speed of the dual member drill string.

REFERENCES:
patent: 3945444 (1976-03-01), Knudson
patent: 4432423 (1984-02-01), Lyons et al.
patent: 4683964 (1987-08-01), Wenzel
patent: 5452967 (1995-09-01), Fuller
patent: 5490569 (1996-02-01), Brotherton et al.
patent: 5924500 (1999-07-01), Puttmann
patent: 6311790 (2001-11-01), Gunsaulis et al.
patent: 6536539 (2003-03-01), Merecka et al.
patent: 6585062 (2003-07-01), Rozendaal et al.
patent: 6659198 (2003-12-01), Camp
patent: RE38418 (2004-02-01), Deken et al.
patent: 6761231 (2004-07-01), Dock et al.
patent: 6848506 (2005-02-01), Sharp et al.
patent: 2003/0132034 (2003-07-01), Sharp et al.
patent: 41 07 834 (1992-09-01), None
patent: 0 674 093 (1995-09-01), None
patent: 842 190 (1960-07-01), None

Affiliated with

Also associated with

Rating

Coupling for dual member pipe does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Coupling for dual member pipe, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Coupling for dual member pipe will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3825396