US PATENT SUBCLASS 166 / 387
.~.~ With sealing feature (e.g., packer)

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}
387.~.~ With sealing feature (e.g., packer)

DEFINITION

Classification: 166/387

With sealing feature (e.g., packer):

(under subclass 381) Process wherein the element comprises means to block the passage of material into or out of a particular area.

SEE OR SEARCH THIS CLASS, SUBCLASS:

118+, for a packer or plug with an expanding anchor.

179+, for a packer or plug.

284+, for a process for blocking a perforation already in a member in a well by a pellet.