Grouting well pipe

Details Grouting well pipe Grouting well pipe

1989-05-30

1990-03-20

Novosad, Stephen J.

Wells

Conduit wall or specific conduit end structure

Downhole coupling or connector

166289, 166317, 405236, E21B 33136, E21B 3314

Patent

active

049093231

ABSTRACT:
A grouting well pipe for a water well. The grouting well pipe has a central well pipe with at least one grouting tube attached along its length. The grouting tube is sealed along its lower end and length to prevent clogging of the grout tube during insertion of the grouting well pipe into a water well. The grouting tube has a grout release structure thereon for release of grout into the space between the grouting well pipe and the water well in response to pumping grout at a predetermined pressure into the grout tube. This seals the space effectively from surface contamination entering the well.

REFERENCES:
patent: 2546978 (1951-04-01), Collins et al.
patent: 2572533 (1951-10-01), Steward
patent: 2913051 (1959-11-01), Lister
patent: 3055424 (1962-09-01), Allen
patent: 3110347 (1963-11-01), Howard et al.
patent: 3512365 (1970-05-01), Muller
patent: 3851490 (1974-12-01), Matsushita
patent: 4191492 (1980-03-01), Cobbs

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