Wells – Means for perforating – weakening – bending or separating pipe... – Cutter rotates circumferentially of pipe
Patent
1986-10-15
1991-02-12
Neuder, William P.
Wells
Means for perforating, weakening, bending or separating pipe...
Cutter rotates circumferentially of pipe
294 8632, 294 8634, E21B 1064
Patent
active
049916491
ABSTRACT:
An oil well packer retriever has a packer miller (6) which has a series of fin-like blades radiating from a central tube string (2). The blades are faced with tungsten carbide and in use these mill away the packer allowing it to drop by gravity. A packer catcher (7) catches and retains the fallen packer for removal from the well. The weight of the packer held by the catcher (7) bears on a shear collar (8) which is secured to the central string (2) by one or more shear bolts the combined strength of which is known. Should the shear stress on the collar (8) exceed that which has been preselected by the number and/or material of the shear bolts, the bolts shear releasing the collar (8) which drops out of engagement the catcher (7) allowing the retriever to be withdrawn from the packer. The packer retriever can under normal conditions mill out and extract several packers without redressing the blades and replacing the catcher.
REFERENCES:
patent: 2096525 (1937-10-01), Neilson
patent: 2904114 (1959-09-01), Webb et al.
patent: 3019840 (1962-02-01), Kennard
patent: 3108637 (1963-10-01), Lee et al.
patent: 3114416 (1963-12-01), Kammerer
patent: 3282358 (1966-01-01), Carothers
patent: 3352593 (1967-11-01), Webb
patent: 4191255 (1980-03-01), Rives
Composite Catalog published by World Oil, 1976, vol. 1.
Composite Catalog published by World Oil, 1976, vol. 2.
Baker Service Tools Catalog, 10/1981.
LandOfFree
Oil well packer retriever does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Oil well packer retriever, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Oil well packer retriever will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-14025