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Class Information
Number: 166/179
Name: Wells > Packers or plugs
Description: Devices insertable from the top of or well into a well conduit and comprising: (1) Means usually known as a packer and comprising a vertical or longitudinally extending tubular member forming a fluid passage and an annular means projecting from the member and blocking fluid flow either up or down or both in the annular space between the tubular member and the surrounding well conduit, said means comprising structure which goes beyond a mere packing assembly or (2) means usually known as a plug and comprising a means for blocking the flow of fluid either up or down or both in a surrounding well conduit by filling the bore of the conduit.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7431098 |
System and method for isolating a wellbore region |
Oct. 7, 2008 |
| 7422071 |
Swelling packer with overlapping petals |
Sep. 9, 2008 |
| 7404437 |
Annular isolators for expandable tubulars in wellbores |
Jul. 29, 2008 |
| 7392841 |
Self boosting packing element |
Jul. 1, 2008 |
| 7387170 |
Expandable packer with mounted exterior slips and seal |
Jun. 17, 2008 |
| 7387158 |
Self energized packer |
Jun. 17, 2008 |
| 7373991 |
Swellable elastomer-based apparatus, oilfield elements comprising same, and methods of using same in oilfield applications |
May. 20, 2008 |
| 7363986 |
Annular isolators for expandable tubulars in wellbores |
Apr. 29, 2008 |
| 7363975 |
Push/pull belleville stack for use with zertech MTM seal |
Apr. 29, 2008 |
| 7322416 |
Methods of servicing a well bore using self-activating downhole tool |
Jan. 29, 2008 |
| 7320367 |
Annular isolators for expandable tubulars in wellbores |
Jan. 22, 2008 |
| 7316271 |
Deformable member |
Jan. 8, 2008 |
| 7299882 |
Annular isolators for expandable tubulars in wellbores |
Nov. 27, 2007 |
| 7264061 |
Well packer for a pipe string and a method of leading a line past the well packer |
Sep. 4, 2007 |
| 7264047 |
Annular isolators for expandable tubulars in wellbores |
Sep. 4, 2007 |
| 7253745 |
Corrosion-resistant downhole transmission system |
Aug. 7, 2007 |
| 7152689 |
System and method to seal by bringing the wall of a wellbore into sealing contact with a tubing |
Dec. 26, 2006 |
| 7143832 |
Well packing |
Dec. 5, 2006 |
| 7128145 |
High expansion sealing device with leak path closures |
Oct. 31, 2006 |
| 7063164 |
System and method to seal by bringing the wall of a wellbore into sealing contact with a tubing |
Jun. 20, 2006 |
| 7059415 |
Wellbore system with annular seal member |
Jun. 13, 2006 |
| 7000697 |
Downhole measurement apparatus and technique |
Feb. 21, 2006 |
| 6945330 |
Slickline power control interface |
Sep. 20, 2005 |
| 6923263 |
Well sealing method and apparatus |
Aug. 2, 2005 |
| 6719046 |
Apparatus for controlling the annulus of an inner string and casing string |
Apr. 13, 2004 |
| 6588505 |
Methods and associated apparatus for downhole data retrieval, monitoring and tool actuation |
Jul. 8, 2003 |
| 6530574 |
Method and apparatus for expansion sealing concentric tubular structures |
Mar. 11, 2003 |
| 6513601 |
Method for setting a packer in a well bore, and a packer |
Feb. 4, 2003 |
| 6470965 |
Device for introducing a high pressure fluid into well head components |
Oct. 29, 2002 |
| 6311771 |
Plug for use in wellbore operations and apparatus for launching said plug |
Nov. 6, 2001 |
| 6173788 |
Wellpacker and a method of running an I-wire or control line past a packer |
Jan. 16, 2001 |
| 6167963 |
Removable non-metallic bridge plug or packer |
Jan. 2, 2001 |
| 5857520 |
Backup shoe for well packer |
Jan. 12, 1999 |
| 5641019 |
Swab-resistant subterranean well packer |
Jun. 24, 1997 |
| 5611547 |
Elongated seal assembly for sealing well tubing-to liner annulus |
Mar. 18, 1997 |
| 5467822 |
Pack-off tool |
Nov. 21, 1995 |
| 5293934 |
Ground water sampling unit having a fluid-operated seal |
Mar. 15, 1994 |
| 5195583 |
Borehole packer |
Mar. 23, 1993 |
| 5096209 |
Seal elements for multiple well packers |
Mar. 17, 1992 |
| 5092403 |
Packer centralizing device |
Mar. 3, 1992 |
| 5052492 |
Method for sealing an elongated, hollow cavity, and a device for carrying out the method |
Oct. 1, 1991 |
| 5046557 |
Well packing tool |
Sep. 10, 1991 |
| 4951746 |
Latching seal unit |
Aug. 28, 1990 |
| 4862967 |
Method of employing a coated elastomeric packing element |
Sep. 5, 1989 |
| 4852649 |
Packer seal means and method |
Aug. 1, 1989 |
| 4753444 |
Seal and seal assembly for well tools |
Jun. 28, 1988 |
| 4655285 |
Plug for use in hot oil treatment of wells having paraffin deposits and method of use thereof |
Apr. 7, 1987 |
| 4625803 |
Method and apparatus for injecting well treating liquid into the bottom of a reservoir interval |
Dec. 2, 1986 |
| 4589484 |
Deployment system |
May. 20, 1986 |
| 4499947 |
Packer for separation of zones in a well bore |
Feb. 19, 1985 |
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