Downhole fluid pumping apparatus and method

Details Downhole fluid pumping apparatus and method Downhole fluid pumping apparatus and method

2006-10-24

2006-10-24

Bagnell, David (Department: 3672)

Wells

Processes

Sampling well fluid

C166S105000, C166S373000, C166S107000, C175S050000, C175S059000, C175S308000, C073S152190

Reexamination Certificate

active

07124819

ABSTRACT:
A downhole fluid pump including a pump chamber, and a piston disposed in the pump chamber so that the piston will move in one selected from a charge stroke and a discharge stroke when the piston is exposed to a differential pressure. The downhole fluid pump may form part of a formation evaluation while drilling tool.

REFERENCES:
patent: 3901314 (1975-08-01), Nutter et al.
patent: 3934468 (1976-01-01), Brieger
patent: 4507957 (1985-04-01), Montgomery et al.
patent: 4591320 (1986-05-01), Pope
patent: 4860581 (1989-08-01), Zimmerman et al.
patent: 4893505 (1990-01-01), Marsden et al.
patent: 4936139 (1990-06-01), Zimmerman et al.
patent: 5377755 (1995-01-01), Michaels et al.
patent: 5411097 (1995-05-01), Manke et al.
patent: 5587525 (1996-12-01), Shwe et al.
patent: 5622223 (1997-04-01), Vasquez
patent: 5791414 (1998-08-01), Skinner et al.
patent: 6192984 (2001-02-01), Schultz
patent: 6230557 (2001-05-01), Ciglenec et al.
patent: 6301959 (2001-10-01), Hrametz et al.
patent: 6343650 (2002-02-01), Ringgenberg
patent: 6516898 (2003-02-01), Krueger
patent: 6568487 (2003-05-01), Meister et al.
patent: 6585045 (2003-07-01), Lee et al.
patent: 6609568 (2003-08-01), Krueger et al.
patent: 6837314 (2005-01-01), Krueger et al.

Affiliated with

Also associated with

Rating

Downhole fluid pumping apparatus and method does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3712813