Method and apparatus for bottom hole testing in wells

Details Method and apparatus for bottom hole testing in wells Method and apparatus for bottom hole testing in wells

1974-08-05

1976-05-18

Novosad, Stephen J.

Wells

Processes

Sampling well fluid

166169, E21B 4900

Patent

active

039571173

ABSTRACT:
Method and apparatus for bottom hole testing in producing or injection wells under pressure employing a tool adapted to be lowered on a flexible line to sampling depth in a well, the tool including a first section containing a closed sample chamber detachably connected to a second section containing time delay fluid escapement means operable to maintain the closed condition of the chamber until the sampling depth is reached and to then cause entry of a well fluid sample to the chamber followed by its closure to retain the sample and preserve the well pressure at the sampling location, the method including withdrawing the tool from the well, disconnecting the sections to recover the sample chamber independently of the second section, and transferring and opening the chamber for testing of its well fluid content.

REFERENCES:
patent: 2303727 (1942-12-01), Douglas
patent: 2312805 (1943-03-01), Douglas
patent: 2441894 (1948-05-01), Mennecier
patent: 2661802 (1953-12-01), Johnston
patent: 3009518 (1961-11-01), Taylor et al.
patent: 3047072 (1962-07-01), Peters et al.
patent: 3095930 (1963-07-01), Kisling

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