Fluid handling – With holder for solid – flaky or pulverized material to be...
Patent
1977-06-15
1979-01-02
Cohan, Alan
Fluid handling
With holder for solid, flaky or pulverized material to be...
137269, 166 75R, F17D 100
Patent
active
041322436
ABSTRACT:
Apparatus for feeding perforation sealer balls into a stream of well treating fluid being pumped through a fluid flow line into a well, the apparatus having a housing, a tube in the housing for receiving sealer balls, the tube communicating with the fluid flow line for the passage of sealer balls from the tube into the flow line. There is provided a tubular sealer ball magazine that communicates with the tube for the transfer of sealer balls from the magazine into the tube. A plunger is reciprocably mounted in the tube for movement between a retracted position, in which the plunger is clear of the juncture of the magazine with the tube to allow a sealer ball to move into the tube, and an extended position, in which the plunger closes the juncture of the magazine with the tube and also ejects a ball from the tube and into the fluid flow line. In order to counterbalance the outward force imposed on the plunger by the high pressure well treating fluid, means responsive to the pressure of the well treating fluid is provided for applying an inwardly directed counterforce to the plunger that is substantially equal to the outward force. So that the apparatus can be adapted to the feeding of perforation sealer balls of varying sizes, the magazine, the tube, and the innermost portion of the plunger are removable and can be replaced by another magazine, another tube, and another innermost portion. A double-action pneumatic actuating cylinder means is operatively associated with the plunger for reciprocating the same.
REFERENCES:
patent: 2790500 (1957-04-01), Jones
patent: 3011196 (1961-12-01), Glover
patent: 3291217 (1966-12-01), Wakefield
BJ-Hughes Inc.
Cohan Alan
McGuire J. B.
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