Well tubing protective fluid injection system

Details Well tubing protective fluid injection system Well tubing protective fluid injection system

1975-04-02

1976-02-03

Leppink, James A.

Wells

Packers or plugs

With controllable passage between central conduit and space...

E21B 3312

Patent

active

039359034

ABSTRACT:
A down-the-hole well tubing protective fluid system, with an injection valve in fluid communication with a ported nipple above a packer assembly, for introduction of protective fluid to the tubing bore. The system includes a concentric protective fluid flow path, extended for fluid flow to below the injection nose and through the bore of the packer, and packer tail pipe for introduction of protective fluid into the well-producing flow path below the packer, to provide protection for the packer assembly, inside and outside, below the packer seal, the injection nose, and the injection valve tail pipe. When the injection tail pipe nose is installed to extend below the lower end of the packer tail pipe, the turbulence caused by production fluid entering the tail pipe nose carries diluted chemical fluid mix up, and around, the outside of the packer tail pipe.

REFERENCES:
patent: 2389985 (1945-11-01), Justice et al.
patent: 3044553 (1962-07-01), Bradley
patent: 3583481 (1971-06-01), Vernotzy
patent: 3853177 (1974-12-01), Mott

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