Vented non-pressurized, uncontaminated well fluid sampler

Details Vented non-pressurized, uncontaminated well fluid sampler Vented non-pressurized, uncontaminated well fluid sampler

1982-03-29

1984-08-07

Novosad, Stephen J.

Wells

Receptacles

With valved or closed top

7386463, 166264, 166 64, E21B 4908

Patent

active

044638043

ABSTRACT:
A method is disclosed for recovering a non-pressurized and uncontaminated fluid sample from deep in a well or the like in an elongated sampler having a sample chamber formed by valves at both ends thereof in a tubular housing for trapping the fluid sample therein comprising, (1) venting the trapped sample fluid from one of the end valves into the well having a vertical portion extending at a predetermined distance above the sample chamber for (1) preventing detrimental pressure to build-up and (2) contamination of the sample fluid during ascent to the surface. A mechanism for carrying out the above method is also disclosed.

REFERENCES:
patent: 1775641 (1930-09-01), Haertl
patent: 2577210 (1951-12-01), Ruska
patent: 2667223 (1954-01-01), Farris
patent: 3047072 (1962-07-01), Peters et al.
patent: 3152644 (1964-10-01), Perkins et al.
patent: 3426847 (1969-02-01), Reardon
patent: 3527298 (1970-09-01), Varty et al.
patent: 4037477 (1977-07-01), Niskin
patent: 4372382 (1983-02-01), Rooney et al.

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