Centraliser

Details Centraliser Centraliser

2006-07-05

2010-12-28

Neuder, William P (Department: 3672)

Wells

Processes

Assembling well part

C166S207000, C166S241600

Reexamination Certificate

active

07857063

ABSTRACT:
There is disclosed an improved expandable centraliser (20;120;220;320), which may optionally also be adjustable, and a related downhole assembly and a method of completing a well. Previous art has suffered from a number of problems and essentially attempted to mitigate the effect of pipe expansion, i.e. using tension caused in the centraliser body. The centraliser (20;120;220;320) of the invention uses the expansion of the tubing to cause compressive forces, which are exerted over known distances to energise blades of the centraliser by using relative motion caused by said expansion. The expandable centraliser (20;120;220;320) comprises at least one first member (30;130;230;330), and at least one second member (35;135;235;335), wherein, in use, relative circumferential motion of the at least one first and second members (30,35;130,135;230,235;330,335) causes radial motion of at least one portion (40;140;240;340) of the expandable centraliser (20;120;220;320).

REFERENCES:
patent: 2258052 (1941-10-01), Hall
patent: 4630690 (1986-12-01), Beasley et al.
patent: 4842082 (1989-06-01), Springer
patent: 5358040 (1994-10-01), Kinley et al.
patent: 6098717 (2000-08-01), Bailey et al.
patent: 6666267 (2003-12-01), Charlton
patent: 6997254 (2006-02-01), Jenner
patent: 7377325 (2008-05-01), Trinder et al.
patent: 2002/0112853 (2002-08-01), Buytaert
patent: 2003/0164236 (2003-09-01), Thornton
patent: 2003/0230411 (2003-12-01), Richard
patent: 2004/0173349 (2004-09-01), Pointing
patent: 2004/0182571 (2004-09-01), Betts
patent: 2006/0266516 (2006-11-01), Presslie et al.
patent: 2 377 717 (2003-01-01), None
patent: 2381284 (2003-04-01), None
patent: 2403238 (2004-12-01), None
patent: WO 99/25949 (1999-05-01), None
patent: WO 02/02904 (2002-01-01), None
patent: WO 02/04781 (2002-01-01), None
patent: WO 03/001789 (2003-01-01), None
patent: WO 03/006789 (2003-01-01), None
patent: WO 03/012246 (2003-02-01), None
patent: WO 03/078781 (2003-09-01), None
patent: WO 03/078789 (2003-09-01), None

Affiliated with

Also associated with

Rating

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

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4227621