Mud flow back valve

Details Mud flow back valve Mud flow back valve

2005-12-20

2005-12-20

Neuder, William (Department: 3672)

Wells

Processes

Placing or shifting well part

C166S321000

Reexamination Certificate

active

06976542

ABSTRACT:
A valve for downhole use allows flow of mud or completion fluids but closes when subjected to produced hydrocarbons. The flow through the valve is through an annular passage that features a sleeve preferably made of rubber. The passage remains open during completion operations, but when hydrocarbons are produced the rubber swells and the passage is closed off. Applications include completions involving long horizontal runs and small inside diameter laterals where access to a sliding sleeve with coiled tubing or a wireline run tool is not practical.

REFERENCES:
patent: 2869475 (1959-01-01), Bobo
patent: 5148825 (1992-09-01), Gil et al.
patent: 5722931 (1998-03-01), Heaven
patent: 6367547 (2002-04-01), Towers et al.
patent: 2002/0174981 (2002-11-01), Boer et al.
patent: PCT/US00/02420 (2000-01-01), None
patent: PCT/GB02/00362 (2002-01-01), None
patent: PCT/GB02/05933 (2002-12-01), None
patent: PCT/EP03/010004 (2003-09-01), None

Affiliated with

Also associated with

Rating

Mud flow back valve does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3523021