Oil well testing apparatus

Details Oil well testing apparatus Oil well testing apparatus

1976-06-01

1977-11-15

Leppink, James A.

Wells

Valves, closures or changeable restrictors

Longitudinally movable operator

175318, E21B 4100

Patent

active

RE0294713

ABSTRACT:
A ball valve type, full opening bore, oil well formation tester utilizes a J-slot mechanism and vertical tool string manipulations to open and close a substantially unrestricted axial bore through the testing tool to allow formation fluid flow through the tool at the command of the tool operator.

REFERENCES:
patent: 3283835 (1966-11-01), Kellner
patent: 3332495 (1967-07-01), Young
patent: 3351133 (1967-11-01), Clark, Jr. et al.
patent: 3405764 (1968-10-01), Nutter
patent: 3435897 (1969-04-01), Barrington
patent: 3442328 (1969-05-01), Nutter
patent: 3446280 (1969-05-01), Nutter
patent: 3494421 (1970-02-01), Dollison
patent: 3499487 (1970-03-01), Barrington
patent: 3703104 (1972-11-01), Tamplen
patent: 3703193 (1972-11-01), Raulins
patent: 3837403 (1974-09-01), Mott
patent: 3850242 (1974-11-01), Crowe

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