Test and isolation tool

Details Test and isolation tool Test and isolation tool

1984-06-12

1986-04-01

Levy, Stewart J.

Measuring and testing

With fluid pressure

Leakage

73 491, G01M 328

Patent

active

045789878

ABSTRACT:
A test and isolation tool for wells of expanded utility and reduced manufacturing cost is disclosed. The outside diameter of the tool is significantly reduced and its overall construction is simplified by total elimination of a previously-employed annular piston. In lieu thereof, the outer surface of a mandrel forms one wall of a cylinder chamber for interfitting axially displaceable seal energizing rings which operate as pistons. The interior surface of a skirt portion of one seal energizing ring forms the other wall of the cylinder chamber for the two rings.

REFERENCES:
patent: 3165919 (1965-01-01), Loomis
patent: 3420095 (1969-01-01), Brown et al.
patent: 3503249 (1970-03-01), Dumond
patent: 4152924 (1979-05-01), Mayo
patent: 4373380 (1983-02-01), Mayo

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