Wells – Packers or plugs – With central conduit and fluid port to space outside
Patent
1989-10-16
1991-07-02
Neuder, William P.
Wells
Packers or plugs
With central conduit and fluid port to space outside
166187, 166191, 138 97, E21B 33124, E21B 33127
Patent
active
050278959
ABSTRACT:
An expandable packer is disclosed for repairing a rupture in an underground conduit. The device includes a first packer section formed proximate a first end and having a first inflatable bladder mounted peripherally thereon. A second packer section is formed proximate a second end and has a second inflatable bladder mounted peripherally thereon. A packer discharge coupling is releasably interconnectable with the first section and includes discharge port means. A packer extension section extends between the discharge coupling and the second packer section. There are means for releasably coupling one end of the packer extension section with the second packer section. The discharge coupling includes means for releasably interconnecting the opposite end of the extension section with the discharge coupling. Compressed air or other gas is selectively introduced into the bladders to inflate the bladders so that they sealably engage the conduit. A sealant is then introduced through the discharge ports, into the conduit, and through the rupture to outside the conduit to seal and repair the rupture.
REFERENCES:
patent: 2808852 (1957-10-01), Brant
patent: 3103235 (1963-09-01), Stringham, III
patent: 3618639 (1971-11-01), Daley et al.
Neuder William P.
Noonan William E.
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