Bottom hole assembly

Details Bottom hole assembly Bottom hole assembly

2008-01-08

2008-01-08

Bagnell, David (Department: 3672)

Boring or penetrating the earth

Automatic control

Of advance or applied tool weight

C175S385000, C175S406000

Reexamination Certificate

active

07316277

ABSTRACT:
A bottom hole assembly has a drill bit and an under-reamer on the up-hole side of the drill bit. In one aspect, the assembly further has a compliant element linking the drill bit to the under-reamer, the compliant element allowing displacement of the drill bit relative to the under-reamer in the axial direction of the assembly. In another aspect, the assembly further has a sensor element which is arranged to measure the weight-on-bit and/or the applied torque of the drill bit, and a transmitter for transmitting the weight-on-bit and/or applied torque measurements to the surface.

REFERENCES:
patent: 1803669 (1931-05-01), Grant
patent: 1819358 (1931-08-01), Crum
patent: 3712854 (1973-01-01), Thometz et al.
patent: 4589504 (1986-05-01), Simpson
patent: 4792000 (1988-12-01), Perkin et al.
patent: 4843875 (1989-07-01), Kerbart
patent: 5343964 (1994-09-01), Leroy
patent: 5386724 (1995-02-01), Das et al.
patent: 5476148 (1995-12-01), LaBonte
patent: 6378632 (2002-04-01), Dewey et al.
patent: 6615933 (2003-09-01), Eddison
patent: 6684949 (2004-02-01), Gabler et al.
patent: 6705413 (2004-03-01), Tessari
patent: 2004/0104051 (2004-06-01), Moriarty et al.
patent: 2 147 063 (1996-10-01), None
patent: 2 171 178 (2001-04-01), None
patent: 0 640 743 (1995-03-01), None
patent: 0 640 743 (1995-03-01), None
patent: 265 507 (1927-02-01), None
patent: 1 111 256 (1968-04-01), None

Affiliated with

Also associated with

Rating

Bottom hole assembly does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Bottom hole assembly, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Bottom hole assembly will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2775201