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Class Information
Number: 166/243
Name: Wells > Miscellaneous (e.g., anchor pipes)
Description: Devices not provided for in other subclasses.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7530400 |
Downhole tool for selectively catching balls in a well bore |
May. 12, 2009 |
| 7455114 |
Snorkel device for flow control |
Nov. 25, 2008 |
| 7455106 |
Polymer protective coated polymeric components for oilfield applications |
Nov. 25, 2008 |
| 7431535 |
Clamp for anchoring production tube, electrohydraulic hose and electric cable simultaneously |
Oct. 7, 2008 |
| 7431080 |
Anchor device to relieve tension from the rope socket prior to perforating a well |
Oct. 7, 2008 |
| 7409998 |
Critical velocity reduction in a gas well |
Aug. 12, 2008 |
| 7337843 |
Solar blackbody waveguide for solar assisted oil recovery applications |
Mar. 4, 2008 |
| 7219728 |
Method and apparatus for generating downhole power |
May. 22, 2007 |
| 7090024 |
Tubing anchor |
Aug. 15, 2006 |
| 7007758 |
Cavity positioning tool and method |
Mar. 7, 2006 |
| 7000693 |
Control of hydrocarbon wells |
Feb. 21, 2006 |
| 6968897 |
Anti-rotation tool |
Nov. 29, 2005 |
| 6966366 |
Plunger enhanced chamber lift for well installations |
Nov. 22, 2005 |
| RE38866 |
Pressure-boost device for downhole tools |
Nov. 8, 2005 |
| 6935423 |
Borehole retention device |
Aug. 30, 2005 |
| 6851479 |
Cavity positioning tool and method |
Feb. 8, 2005 |
| 6698516 |
Method for magnetizing wellbore tubulars |
Mar. 2, 2004 |
| 6675888 |
Method and system for moving equipment into and through an underground well |
Jan. 13, 2004 |
| 6619392 |
Blast joint assembly |
Sep. 16, 2003 |
| 6491116 |
Frac plug with caged ball |
Dec. 10, 2002 |
| 6454000 |
Cavity well positioning system and method |
Sep. 24, 2002 |
| 6454012 |
Tool string shock absorber |
Sep. 24, 2002 |
| 6378608 |
Apparatus and method for separating oil, water and solids |
Apr. 30, 2002 |
| 6325145 |
Pressure pulse attenuator |
Dec. 4, 2001 |
| 6318462 |
Downhole anti-rotation tool |
Nov. 20, 2001 |
| 6293340 |
Gas-lift-ball control device and oil producing method using said device |
Sep. 25, 2001 |
| 6273189 |
Downhole tractor |
Aug. 14, 2001 |
| 6216779 |
Downhole tool actuator |
Apr. 17, 2001 |
| 6199632 |
Selectively locking locator |
Mar. 13, 2001 |
| 6186234 |
Removal of lining from tubing |
Feb. 13, 2001 |
| 6155346 |
Downhole anchor |
Dec. 5, 2000 |
| 6062309 |
Torque roller anchor |
May. 16, 2000 |
| 5881824 |
Bottomhole assembly orienting sub |
Mar. 16, 1999 |
| 5860476 |
Method and apparatus for separating a well stream |
Jan. 19, 1999 |
| 5829528 |
Ignition suppression system for down hole antennas |
Nov. 3, 1998 |
| 5791412 |
Pressure-boost device for downhole tools |
Aug. 11, 1998 |
| 5711374 |
Method for cyclone separation of oil and water and an apparatus for separating of oil and water |
Jan. 27, 1998 |
| 5636690 |
Torque anchor |
Jun. 10, 1997 |
| 5549333 |
Blast joint |
Aug. 27, 1996 |
| 5524708 |
Non-metallic oil well tubing system |
Jun. 11, 1996 |
| 5518076 |
Grease applicator for a drill shaft |
May. 21, 1996 |
| 5382056 |
Riser weak link |
Jan. 17, 1995 |
| 5314209 |
Blast joint for snubbing unit |
May. 24, 1994 |
| 5275441 |
Blast joint with torque transferring connector |
Jan. 4, 1994 |
| 5211229 |
Washpipe support clamp |
May. 18, 1993 |
| RE34017 |
Increased tensile strength variable diameter protective joint |
Aug. 4, 1992 |
| 5110644 |
Composition material tube substantially insensitive to the variations of length under the effect of the internal pressure |
May. 5, 1992 |
| 5059043 |
Blast joint for snubbing unit |
Oct. 22, 1991 |
| 5046558 |
Method and apparatus for repairing casings and the like |
Sep. 10, 1991 |
| 5016921 |
Durable blast joint with hydrostatic driver |
May. 21, 1991 |
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