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Class Information
Number: 166/134
Name: Wells > Packers or plugs > With expanding anchor > Support and holddown expanding anchors
Description: Devices in which the expanding anchor comprises two distinct means, one being adapted to anchor the device against downward movement, and the other adapted to anchor the device against upward movement.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7392841 |
Self boosting packing element |
Jul. 1, 2008 |
| 7389823 |
Retrievable bridge plug |
Jun. 24, 2008 |
| 7387170 |
Expandable packer with mounted exterior slips and seal |
Jun. 17, 2008 |
| 7377328 |
Expandable anchor |
May. 27, 2008 |
| 7373973 |
Packer element retaining system |
May. 20, 2008 |
| 7341110 |
Slotted slip element for expandable packer |
Mar. 11, 2008 |
| 7308945 |
Packing tool and method |
Dec. 18, 2007 |
| 7231987 |
Deep set packer with hydrostatic setting actuator |
Jun. 19, 2007 |
| 7225870 |
Hydraulic tools for setting liner top packers and method for cementing liners |
Jun. 5, 2007 |
| 7216700 |
Torsional resistant slip mechanism and method |
May. 15, 2007 |
| 7198110 |
Two slip retrievable packer for extreme duty |
Apr. 3, 2007 |
| 7124831 |
Resin impregnated continuous fiber plug with non-metallic element system |
Oct. 24, 2006 |
| 7096938 |
Slip energized by longitudinal shrinkage |
Aug. 29, 2006 |
| 7082991 |
Slip spring with heel notch |
Aug. 1, 2006 |
| 7077212 |
Method of hydraulically actuating and mechanically activating a downhole mechanical apparatus |
Jul. 18, 2006 |
| 7051805 |
Expandable packer with anchoring feature |
May. 30, 2006 |
| 7040409 |
Safety valve for oil wells |
May. 9, 2006 |
| 7036602 |
Retrievable bridge plug |
May. 2, 2006 |
| 6976534 |
Slip element for use with a downhole tool and a method of manufacturing same |
Dec. 20, 2005 |
| 6959759 |
Expandable packer with anchoring feature |
Nov. 1, 2005 |
| 6926086 |
Method for removing a tool from a well |
Aug. 9, 2005 |
| 6880642 |
Well abandonment plug |
Apr. 19, 2005 |
| 6796376 |
Composite bridge plug system |
Sep. 28, 2004 |
| 6779600 |
Labyrinth lock seal for hydrostatically set packer |
Aug. 24, 2004 |
| 6712153 |
Resin impregnated continuous fiber plug with non-metallic element system |
Mar. 30, 2004 |
| 6708770 |
Drillable bridge plug |
Mar. 23, 2004 |
| 6708768 |
Drillable bridge plug |
Mar. 23, 2004 |
| 6695051 |
Expandable retaining shoe |
Feb. 24, 2004 |
| 6691788 |
Retrievable packer having a positively operated support ring |
Feb. 17, 2004 |
| 6666276 |
Downhole radial set packer element |
Dec. 23, 2003 |
| 6651750 |
Shear release packer and method of transferring the load path therein |
Nov. 25, 2003 |
| 6598672 |
Anti-extrusion device for downhole applications |
Jul. 29, 2003 |
| 6578633 |
Drillable bridge plug |
Jun. 17, 2003 |
| 6564871 |
High pressure permanent packer |
May. 20, 2003 |
| 6550540 |
Mechanical anchor setting system |
Apr. 22, 2003 |
| 6491108 |
Drillable bridge plug |
Dec. 10, 2002 |
| 6481497 |
High temperature high pressure retrievable packer with barrel slip |
Nov. 19, 2002 |
| 6378606 |
High temperature high pressure retrievable packer with barrel slip |
Apr. 30, 2002 |
| 6354372 |
Subterranean well tool and slip assembly |
Mar. 12, 2002 |
| 6315041 |
Multi-zone isolation tool and method of stimulating and testing a subterranean well |
Nov. 13, 2001 |
| 6305477 |
Apparatus and method for maintaining relatively uniform fluid pressure within an expandable well tool subjected to thermal variants |
Oct. 23, 2001 |
| 6302217 |
Extreme service packer having slip actuated debris barrier |
Oct. 16, 2001 |
| 6241017 |
Caged slip system and release methods |
Jun. 5, 2001 |
| 6237687 |
Method and apparatus for placing a gravel pack in an oil and gas well |
May. 29, 2001 |
| 6234249 |
Device for use with a retrievable bridge plug |
May. 22, 2001 |
| 6213204 |
High load, thin slip system |
Apr. 10, 2001 |
| 6167963 |
Removable non-metallic bridge plug or packer |
Jan. 2, 2001 |
| 6152233 |
Surge anchor assembly |
Nov. 28, 2000 |
| 6142227 |
Expandable retrievable bridge plug |
Nov. 7, 2000 |
| 6123148 |
Compact retrievable well packer |
Sep. 26, 2000 |
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