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Class Information
Number: 166/98
Name: Wells > Grapple and well anchored lifting means
Description: Devices comprising a means which is fixed in position in the well combined with a means for grappling an object in the well and a means for lifting the object and moving it relative to the fixed means.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7357183 |
Magnetic fishing tool and method |
Apr. 15, 2008 |
| 7325614 |
Method for releasing stuck drill string |
Feb. 5, 2008 |
| 7267168 |
Spider with discrete die supports |
Sep. 11, 2007 |
| 7163059 |
Method for releasing stuck drill string |
Jan. 16, 2007 |
| 7137454 |
Apparatus for facilitating the connection of tubulars using a top drive |
Nov. 21, 2006 |
| 7096951 |
Method and apparatus for retrieving an object from a well bore |
Aug. 29, 2006 |
| 7096952 |
Latch mechanism guide |
Aug. 29, 2006 |
| 7077205 |
Method and device to free stuck objects |
Jul. 18, 2006 |
| 7077204 |
Whip retrieval method and apparatus |
Jul. 18, 2006 |
| 7051810 |
Downhole force generator and method for use of same |
May. 30, 2006 |
| 7036595 |
Removal of tubulars from wells |
May. 2, 2006 |
| 7021382 |
Downhole axial force generating tool |
Apr. 4, 2006 |
| 6988551 |
Jar with adjustable trigger load |
Jan. 24, 2006 |
| 6896050 |
Latching system for maintaining position of component within a downhole drill string section |
May. 24, 2005 |
| 6848506 |
Rotary driven retrieval tool for horizontal directional drilling operations |
Feb. 1, 2005 |
| 6848507 |
Expandable wirefinder and method for use of same |
Feb. 1, 2005 |
| 6758267 |
Process and arrangement for retrieving of equipment from bore holes |
Jul. 6, 2004 |
| 6742584 |
Apparatus for facilitating the connection of tubulars using a top drive |
Jun. 1, 2004 |
| 6729407 |
Method for removing gravel pack screens |
May. 4, 2004 |
| 6719044 |
Wear bushing running and retrieval tools |
Apr. 13, 2004 |
| 6719052 |
Latch mechanism guide |
Apr. 13, 2004 |
| 6615919 |
Well pipe extraction apparatus |
Sep. 9, 2003 |
| 6578635 |
Lining removal method, system and components thereof |
Jun. 17, 2003 |
| 6564885 |
Up-hole overshot and safety drilling apparatus |
May. 20, 2003 |
| 6491116 |
Frac plug with caged ball |
Dec. 10, 2002 |
| 6419023 |
Deviated borehole drilling assembly |
Jul. 16, 2002 |
| 6386282 |
Safety switching system for clamping devices for pipes |
May. 14, 2002 |
| 6357528 |
One-trip casing cutting & removal apparatus |
Mar. 19, 2002 |
| 6267180 |
Packer releasing tool and method for releasing a packer assembly from a wellbore |
Jul. 31, 2001 |
| 6253844 |
Swivelling device for a downhole rod pump, and method of use thereof |
Jul. 3, 2001 |
| 6230797 |
Flow control device retrieval tool and method |
May. 15, 2001 |
| 6213210 |
Removal of lining from tubing |
Apr. 10, 2001 |
| 6196309 |
Down hole pulling tool and method of use |
Mar. 6, 2001 |
| 6056049 |
Wellhead retrieving tool |
May. 2, 2000 |
| 6045171 |
Spear head assembly |
Apr. 4, 2000 |
| 6019173 |
Multilateral whipstock and tools for installing and retrieving |
Feb. 1, 2000 |
| 5988992 |
Retrievable progressing cavity pump rotor |
Nov. 23, 1999 |
| 5984009 |
Logging tool retrieval system |
Nov. 16, 1999 |
| 5947202 |
Method and apparatus for engaging an object |
Sep. 7, 1999 |
| 5865253 |
Wellbore overshot |
Feb. 2, 1999 |
| 5782297 |
Retrieval tool for back pressure valve and tree test plug |
Jul. 21, 1998 |
| 5775433 |
Coiled tubing pulling tool |
Jul. 7, 1998 |
| 5765638 |
Tool for use in retrieving an essentially cylindrical object from a well bore |
Jun. 16, 1998 |
| 5673754 |
Method and apparatus for downhole fishing operations |
Oct. 7, 1997 |
| 5474125 |
Retrieval tool for use with a slotted face wellbore deviation assembly |
Dec. 12, 1995 |
| 5474124 |
Wellhead retrieval tool assembly |
Dec. 12, 1995 |
| 5413171 |
Latching and sealing assembly |
May. 9, 1995 |
| 5413170 |
Spoolable coiled tubing completion system |
May. 9, 1995 |
| 5398753 |
Wireline hydraulic retrieving tool and downhole power generating assembly |
Mar. 21, 1995 |
| 5361844 |
Well fishing grapple assembly and method abstract |
Nov. 8, 1994 |
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