US PATENT SUBCLASS 166 / 185
.~ With central conduit and fluid port to space outside


Current as of: June, 1999
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166 /   HD   WELLS

179  DF  PACKERS OR PLUGS {17}
185.~ With central conduit and fluid port to space outside {1}
186  DF  .~.~> Port between sealing portions and bypass around


DEFINITION

Classification: 166/185

(under subclass 179) Devices comprising a packer or plug adapted to be supported from the top of the well by a central conduit for insertion thereby into the well, and a port for the passage of fluid between said central conduit and the space outside the conduit adjacent the packer or plug.

(1) Note. The port may be any side opening or a restricted

open end portion of the central conduit.

SEE OR SEARCH THIS CLASS, SUBCLASS:

100, for a lateral probe or port sealed against a well wall.

101, for a packer or plug and pump or plunger means exerting outward pressure.

106, for a packer or plug and an eduction pump. 126+, and 142+, for a packer with a controllable passage between a central conduit and the space below the packer.

131, and 184, for a packer or plug with a controllable passage between a central conduit and the space above the packer.

141, for a packer or plug sealing portion which closes a port between a central conduit and the space outside when unexpanded.