Side pocket mandrel system for dual chemical injection

Details Side pocket mandrel system for dual chemical injection Side pocket mandrel system for dual chemical injection

1983-02-23

1984-11-06

Novosad, Stephen J.

Wells

Means for guiding insertable element laterally of well axis

166244C, 166321, E21B 3706

Patent

active

044806876

ABSTRACT:
In accordance with an illustrative embodiment of the present invention, a system for separate injection of a plurality of chemicals into the production string of a well at substantially the same depth or level includes upper and lower side pocket mandrels having pressure responsive control valves seated in their respective side pockets, a first chemical supply conduit extending from the top of the well to the side pocket of said upper mandrel and then continuing to and through said lower mandrel to an injection point adjacent the lower end of the side pocket in said lower mandrel, and a second chemical supply conduit leading from the top of the well to and through said upper mandrel and then to the side pocket of said lower mandrel, whereby chemicals supplied under pressure to said conduits can flow past said control valves and be injected into the tubing in a manner to treat substantially the entire length thereof above said injection point.

REFERENCES:
patent: 4031955 (1977-06-01), Ledet
patent: 4239082 (1980-12-01), Terral
patent: 4371038 (1983-02-01), Abernathy et al.

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