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US 6,206,095 B1Granted
Apparatus for dropping articles downhole
AssigneeBaker Hughes Incorporated
InventorJohn L. Baugh
Life of this patent
Estimating the term…
Abstract
A plug-dropping head in which the objects to be dropped are placed in individual discrete passages. A motor-driven or hand-operated rotating member orients an entrance to a passage going through it to, in series, individual passages in the housing for sequential dropping of objects downhole. A relief port is provided so that as the rotating outlet member moves from one passage in the housing to the next, the relief passage allows continuing flow delivered by the surface pump.
Claims17
An apparatus for dropping at least one object downhole, comprising:
- at least one housing defining a plurality of passages;
- at lease one rotatably mounted outlet member having a passage thereon selectively movable into alignment with said passages in said housing so as to allow an object in a passage in said housing to drop.
Dependencies are inferred from the claim text.