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Class Information
Number: 166/116
Name: Wells > Central chamber sealed with respect to prepositioned modified surrounding conduit > Surrounding conduit carries packer or plug
Description: Devices in which the surrounding conduit carries a packer or plug as defined in subclass 179.

Patents under this class:

Patent Number Title Of Patent Date Issued
8555958 Pipeless steam assisted gravity drainage system and method Oct. 15, 2013
7849920 System and method for optimizing production in a well Dec. 14, 2010
7819184 Logging plug with high integrity internal seal Oct. 26, 2010
7808631 Stirrer and analyzer Oct. 5, 2010
7654329 Dual-type plug for wellhead Feb. 2, 2010
7650945 Inflatable closure system Jan. 26, 2010
7293437 Gasket and washing machine using the same Nov. 13, 2007
7278493 Auto entry guide Oct. 9, 2007
6957698 Downhole activatable annular seal assembly Oct. 25, 2005
6668932 Apparatus and methods for isolating a wellbore junction Dec. 30, 2003
6631763 Method and system for testing a borehole by the use of a movable plug Oct. 14, 2003
6561269 Canister, sealing method and composition for sealing a borehole May. 13, 2003
6439312 Apparatus and methods for isolating a wellbore junction Aug. 27, 2002
6095245 Well perforating and packing apparatus and method Aug. 1, 2000
5743335 Well completion system and method Apr. 28, 1998
5348092 Gravel pack assembly with tubing seal Sep. 20, 1994
5163515 Pumpdown toolstring operations in horizontal or high-deviation oil or gas wells Nov. 17, 1992
4951746 Latching seal unit Aug. 28, 1990
4921044 Well injection systems May. 1, 1990
4907651 Metal-to-metal packer seal for downhole disconnectable pipe joint Mar. 13, 1990
4869323 Cementing and rotating an upper well casing attached by swivel to a lower casing Sep. 26, 1989
4782896 Retrievable fluid flow control nozzle system for wells Nov. 8, 1988
4641707 Well apparatus Feb. 10, 1987
4628996 Full opening check valve Dec. 16, 1986
4612985 Seal assembly for well tools Sep. 23, 1986
4583592 Well test apparatus and methods Apr. 22, 1986
4424858 Apparatus for recovering gaseous hydrocarbons from hydrocarbon-containing solid hydrates Jan. 10, 1984
4063427 Seal arrangement and flow control means therefor Dec. 20, 1977
3952799 Apparatus for borehole drilling Apr. 27, 1976
3934648 Well tubing system with orienting coupling means Jan. 27, 1976

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