Annular shaped power charge for subsurface well devices

Details Annular shaped power charge for subsurface well devices Annular shaped power charge for subsurface well devices

1992-03-26

1993-05-18

Melius, Terry Lee

Wells

With explosive or gas generating means in well

166 651, 175 452, 102284, E21B 2304

Patent

active

052112241

ABSTRACT:
An annular shaped gas generating power charge is shown of the type which can be used in a downhole tool in a well. The charge is provided in the form of a longitudinal strip of solid propellant having a length and a width, a leading end which defines a burn area, a trailing end and opposing side edges. The strip is helically wrapped in at least one spiral turn about a central axis so that the opposing edges of the strip abut one another to form an annular shape. The annular shape provides a controlled gas generation rate and can be installed in the setting chamber of a downhole tool to provide a controlled setting action of the elastomeric components of the downhole tool.

REFERENCES:
patent: 3213793 (1965-10-01), Dratz
patent: 3233674 (1966-02-01), Leutwyler
patent: 3496870 (1970-02-01), Fulmer
patent: 3737348 (1973-06-01), Schultz et al.
patent: 4275657 (1981-06-01), Dallet

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