Wells – Valves – closures or changeable restrictors – Longitudinally movable operator
Patent
1984-09-12
1986-11-25
Novosad, Stephen J.
Wells
Valves, closures or changeable restrictors
Longitudinally movable operator
166373, 166162, 166264, E21B 3412
Patent
active
046243178
ABSTRACT:
A well testing tool includes a housing adapted to be connected to a well test string and having a substantially open bore therethrough. A valve assembly is disposed in the housing and includes a spherical valve member having a substantially open valve bore therethrough and includes upper and lower annular seats engaging the spherical valve member. The valve member is rotatable within the seats between closed and open positions. An actuating assembly is engaged with the valve member for rotating the valve member between its open positions upon relative longitudinal movement between the actuating assembly and the spherical valve member. An upper load transfer mandrel is disposed between the upper seat and the housing for transferring any upward forces caused by upwardly directed pressure differentials across the spherical valve member to the housing by compressional loading of the upper load transfer mandrel. A lower load transfer mandrel is disposed between the lower annular seat and the housing for transferring any downward forces caused by a downward directed pressure differential across the spherical valve member to the housing by compressional loading of the lower load transfer mandrel.
REFERENCES:
patent: 3388745 (1968-06-01), Cole
patent: 3435897 (1969-04-01), Barrington
patent: 3814182 (1974-06-01), Giroux
patent: 3830297 (1974-08-01), Cockrell
patent: 4319634 (1982-03-01), McMahan et al.
patent: 4372392 (1983-02-01), Barrington et al.
patent: 4444267 (1984-04-01), Beck
patent: 4522266 (1985-06-01), Barrington
Bagnell David J.
Beavers Lucian W.
Duzan James R.
Halliburton Company
Novosad Stephen J.
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