Multiple sample annulus pressure responsive sampler

Details Multiple sample annulus pressure responsive sampler Multiple sample annulus pressure responsive sampler

1991-09-24

1993-08-31

Neuder, William P.

Wells

Receptacles

Lateral ports used in well

166264, 166325, E21B 4908

Patent

active

052400727

ABSTRACT:
The invention discloses a multiple sample annulus pressure responsive sampler which allows the collection of samples at different time intervals and at different depth intervals in a wellbore. In one embodiment, the tool contains cylindrical housing means, a power piston, means for biasing the power piston, an oil case, an air case, valve means, valve activation means, and means for sampling the well fluid. In a second embodiment, the valve activating means includes energizing means for energizing an electric motor. In a third embodiment, a rupture disc is used in order to axially move the power piston.

REFERENCES:
patent: 4583595 (1986-04-01), Czernichow et al.
patent: 4665983 (1987-05-01), Ringgenberg
patent: 4721157 (1988-01-01), Berzin
patent: 4856585 (1989-08-01), White et al.
patent: 4903765 (1990-02-01), Zunkel

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