US PATENT SUBCLASS 166 / 386
.~.~ Fluid flow control member (e.g., plug or valve)

Current as of: June, 1999
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166 /   HD   WELLS

244.1  DF  PROCESSES {39}
381  DF  .~ Placing or shifting well part {6}
386.~.~ Fluid flow control member (e.g., plug or valve)

DEFINITION

Classification: 166/386

Fluid flow control member (e.g., plug or valve):

(under subclass 381) Process wherein the element comprises a device for regulating or obstructing fluid flow in the central conduit or tubing of the well.

SEE OR SEARCH THIS CLASS, SUBCLASS:

123+, for detachable setting means for a packer or plug with an expanding anchor.

181+, for a detachable setting means for a packer or plug.

373, for a process of operating a valve, closure or changeable restrictor in a well.