Inflatable packer with wide slat reinforcement

Details Inflatable packer with wide slat reinforcement Inflatable packer with wide slat reinforcement

1994-12-22

1997-03-25

Tsay, Frank

Wells

Packers or plugs

Expanded by confined fluid from central chamber, pump or...

166195, E21B 33127

Patent

active

056135556

ABSTRACT:
A slat-type inflatable packer includes a plurality of longitudinal metal slats on the exterior thereof which are partially overlapping to allow expansion of the packer element while providing a barrier against extrusion. In one embodiment each slat has narrow end portions and a wide central portion to provide greatly increased lateral stiffness as well as improved extrusion barrier and slat deployment characteristics, particularly in high expansion ratio packers, and in another embodiment such characteristics are further improved by upper and lower intermediate sections which are wider than such central portion.

REFERENCES:
patent: 3506068 (1970-04-01), Brown et al.
patent: 3604732 (1971-09-01), Malone
patent: 4832120 (1989-05-01), Coronado
patent: 4892144 (1990-01-01), Coone
patent: 4923007 (1990-05-01), Sanford et al.
patent: 4979570 (1990-12-01), Mody
patent: 5280824 (1994-01-01), Eslinger et al.
patent: 5353871 (1994-10-01), Eslinger et al.
patent: 5507341 (1996-04-01), Eslinger et al.

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