Wells – Processes – Dissolving or preventing formation of solid oil deposit
Reexamination Certificate
2007-06-26
2007-06-26
Gay, Jennifer H. (Department: 3672)
Wells
Processes
Dissolving or preventing formation of solid oil deposit
C166S335000, C166S368000
Reexamination Certificate
active
10641350
ABSTRACT:
A system monitors and controls the injection of additives into formation fluids recovered through a subsea well. The system includes a chemical injection unit and a controller positioned at a remote subsea location. The injection unit uses a pump to supply one or more selected additives from a subsea and/or remote supply unit. The controller operates the pump to control the additive flow rate based on signals provided by sensors measuring a parameter of interest. A one mode system includes a surface facility for supporting the subsea chemical injection and monitoring activities. In one embodiment, the surface facility is an offshore rig that provides power and has a chemical supply that provides additives to one or more injection units. In another embodiment, the surface facility includes a relatively stationary buoy and a mobile service vessel. When needed, the service vessel transfers additives to the chemical injection units via the buoy.
REFERENCES:
patent: 3695047 (1972-10-01), Pogonowski et al.
patent: 3780750 (1973-12-01), Perkins
patent: 4589434 (1986-05-01), Kelley
patent: 4732215 (1988-03-01), Hopper
patent: 4848475 (1989-07-01), Dean et al.
patent: 5025865 (1991-06-01), Caldwell et al.
patent: 6102124 (2000-08-01), Skeels et al.
patent: 6196314 (2001-03-01), Chen
patent: 6281489 (2001-08-01), Tubel et al.
patent: 6292756 (2001-09-01), Lievois et al.
patent: 6467340 (2002-10-01), Gallagher et al.
patent: 6536528 (2003-03-01), Amin et al.
patent: 6539778 (2003-04-01), Tucker et al.
patent: 6575248 (2003-06-01), Zhang et al.
patent: 6640900 (2003-11-01), Smith
patent: 6640901 (2003-11-01), Appleford et al.
patent: 6663361 (2003-12-01), Kohl et al.
patent: 6725924 (2004-04-01), Davidson et al.
patent: 6772840 (2004-08-01), Headworth
patent: 6869251 (2005-03-01), Zou et al.
patent: 2002/0004014 (2002-01-01), Kohl
patent: 2002/0011335 (2002-01-01), Zhang et al.
patent: 2004/0134662 (2004-07-01), Chitwood et al.
patent: 2004/0253734 (2004-12-01), Firmin
patent: 2004/0262008 (2004-12-01), Deans et al.
patent: 2005/0137432 (2005-06-01), Matthews et al.
patent: 2005/0178556 (2005-08-01), Appleford et al.
Aeschbacher, Jr. William Edward
Crow Cindy L.
Means Mitch C.
Ramachandran Sunder
Shaw Christopher Kempson
Baker Hughes Incorporated
Bomar Shane
Gay Jennifer H.
Madan Mossman & Sriram P.C.
LandOfFree
Subsea chemical injection unit for additive injection and... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Subsea chemical injection unit for additive injection and..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Subsea chemical injection unit for additive injection and... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3821975