Back pressure valve for chemical injection line

Details Back pressure valve for chemical injection line Back pressure valve for chemical injection line

E - Fixed Constructions

21

B

166/31

E21B 43/28 (2006.01)

Patent

CA 1200757

ABSTRACT In a sub-sea gas and oil well it is conventional to pump methanol or other chemicals through a flexible hose running down the well annulus to a chemical injection valve. The invention involves providing an annulus control back pressure valve between the chemical injection hose and the chemical injection valve. The back pressure valve utilizes the annulus pressure to oppose the chemical pressure in the hose, whereby when the chemical pressure in the flexible hose exceeds a predetermined value related to the annulus pressure the back pressure valve is forced open, but when the chemical pressure is below the predetermined value the back pressure valve closes thereby maintaining in the flexible hose a sufficiently high internal pressure to prevent collapse of the hose. Continual collapsing and expanding of the hose is thus eliminated preventing any possible rupture of the hose.

435754

Affiliated with

Also associated with

Rating

Back pressure valve for chemical injection line does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Back pressure valve for chemical injection line, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Back pressure valve for chemical injection line will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1215066