Wells – Processes – Perforating – weakening – bending or separating pipe at an...
Patent
1986-08-14
1988-06-07
Novosad, Stephen J.
Wells
Processes
Perforating, weakening, bending or separating pipe at an...
E21B 43112
Patent
active
047490390
ABSTRACT:
Method and apparatus by which a gun firing head is maintained free of debris. An upper tubing string runs downhole in a cased borehole to a packer device. A jet gun, having a firing head located at the upper end thereof, is connected to a lower tubing string. A vent assembly is connected in series relationship within the lower string, and underlies the packer device. A barrier is contained within the lower tubing in underlying relationship to the vent and isolates the tubing interior immediately above the gun from contact with well fluids. A gun firing device is run from the surface, downhole through the packer device, and penetrates the barrier to gain access to the gun firing head, whereupon the gun is detonated, thereby perforating the casing and penetrating the payzone. Production occurs back through the perforations, up through the lower annulus, into the vent, and up the lower tubing string, through the packer, and up through the upper tubing string to the surface of the earth where the production is gathered.
REFERENCES:
patent: 2760408 (1956-08-01), Taylor
patent: 4040485 (1977-08-01), Vann et al.
patent: 4299287 (1981-11-01), Vann et al.
patent: 4330039 (1982-05-01), Vann et al.
patent: 4538680 (1985-09-01), Brieger et al.
Brieger Emmet F.
Colle, Jr. Edward A.
George Flint R.
Jones Hilton B.
Vann Roy R.
Bui Thuy M.
Duzan James R.
Halliburton Company
Novosad Stephen J.
LandOfFree
Gun firing system using fluid filled pressure balance tubing does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Gun firing system using fluid filled pressure balance tubing, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Gun firing system using fluid filled pressure balance tubing will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-839198