Valves and valve actuation – Fluid actuated or retarded – With mechanical movement between actuator and valve
Patent
1994-04-29
1996-09-03
Walton, George L.
Valves and valve actuation
Fluid actuated or retarded
With mechanical movement between actuator and valve
166324, 251 636, 25131510, 25131516, 25131501, F16K 31122, E21B 2900, E21B 3416
Patent
active
055516653
ABSTRACT:
A ball valve having the capability of cutting coiled tubing extending therethrough. The valve includes a ball rotatably disposed within a housing and adjacent to a seat. Control arms prevent relative longitudinal movement between the ball and seat. The ball defines a pair of slots therein, each slot having a bearing surface. A pair of control pins are disposed on opposite sides of the ball and rotatably disposed in corresponding control frames disposed on opposite sides of the ball. Each control pin has an end with a bearing surface thereon extending into a corresponding slot in the ball so that flat contact is provided between the control pin and the ball. This greater area of contact between the pins and the slots allows a greater load to be transmitted to the ball to provide the shearing load necessary to shear relatively large diameters of coiled tubing which extend through the open valve. The valve is opened and closed by pressure actuation of a piston.
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Allred Wesley R.
Noack Timothy
Halliburton Company
Imwalle William
Kennedy Neal R.
Walton George L.
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