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Class Information
Number: 166/75.14
Name: Wells > Above ground apparatus > Suspension means
Description: Above ground apparatus for hanging tubing within a well.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 6401811 |
Tool tie-down |
Jun. 11, 2002 |
| 6394201 |
Tubing spider |
May. 28, 2002 |
| 6386282 |
Safety switching system for clamping devices for pipes |
May. 14, 2002 |
| 6386283 |
Elevator and spider converter |
May. 14, 2002 |
| 6361251 |
Apparatus for and a method of supporting a tubular member |
Mar. 26, 2002 |
| 6302211 |
Apparatus and method for remotely installing shoulder in subsea wellhead |
Oct. 16, 2001 |
| 6237684 |
Pipe string handling apparatus and method |
May. 29, 2001 |
| 6223819 |
Wellhead for providing structure when utilizing a well pumping system |
May. 1, 2001 |
| 6202745 |
Wellhead apparatus |
Mar. 20, 2001 |
| 6199630 |
Pull-through tubing string rotator for an oil well |
Mar. 13, 2001 |
| 6192981 |
Coiled tubing hanger assembly |
Feb. 27, 2001 |
| 6138751 |
Hanger assembly |
Oct. 31, 2000 |
| 6089338 |
Flush mounted self aligning spider |
Jul. 18, 2000 |
| 6079509 |
Pipe die method and apparatus |
Jun. 27, 2000 |
| 6047776 |
Enhanced control line exit |
Apr. 11, 2000 |
| 6012519 |
Full bore tubing hanger system |
Jan. 11, 2000 |
| 5988273 |
Coiled tubing completion system |
Nov. 23, 1999 |
| 5971086 |
Pipe gripping die |
Oct. 26, 1999 |
| 5964286 |
Tubing rotator |
Oct. 12, 1999 |
| 5944111 |
Internal riser tensioning system |
Aug. 31, 1999 |
| 5848647 |
Pipe gripping apparatus |
Dec. 15, 1998 |
| 5813468 |
Dual casing hanger |
Sep. 29, 1998 |
| 5799730 |
Wellhead casing hanger assembly |
Sep. 1, 1998 |
| 5794693 |
Dual tubing string hanging apparatus |
Aug. 18, 1998 |
| 5775420 |
Dual string assembly for gas wells |
Jul. 7, 1998 |
| 5735344 |
Tubing hanger with hydraulically energized metal annular seal with new design tubing hanger running tool |
Apr. 7, 1998 |
| 5732772 |
Dual split tubing hanger |
Mar. 31, 1998 |
| 5706893 |
Tubing hanger |
Jan. 13, 1998 |
| 5701953 |
Well head for environmental extraction wells |
Dec. 30, 1997 |
| 5655606 |
Running tool for installing a wellhead load shoulder |
Aug. 12, 1997 |
| 5611398 |
Two-piece drilling flange |
Mar. 18, 1997 |
| 5577556 |
Unitary diversionary-tubing hanger and energizable rod seal |
Nov. 26, 1996 |
| 5341885 |
Internal tubing hanger lockdown |
Aug. 30, 1994 |
| 5332043 |
Wellhead connector |
Jul. 26, 1994 |
| 5309991 |
Wellhead connector |
May. 10, 1994 |
| 5299644 |
Well starter head |
Apr. 5, 1994 |
| 5031695 |
Well casing hanger with wide temperature range seal |
Jul. 16, 1991 |
| 4923006 |
Insulating support for tubing string |
May. 8, 1990 |
| 4919460 |
Wellhead casing hanger support mechanism |
Apr. 24, 1990 |
| 4898238 |
Pipe supporting device |
Feb. 6, 1990 |
| 4651831 |
Subsea tubing hanger with multiple vertical bores and concentric seals |
Mar. 24, 1987 |
| 4600054 |
Tubing hanger assembly |
Jul. 15, 1986 |
| 4532987 |
Geothermal expansion spool piston |
Aug. 6, 1985 |
| 4511002 |
Multiple tubing hanger tie back system and method |
Apr. 16, 1985 |
| 4291767 |
Method for stabilizing and hanging surface casing |
Sep. 29, 1981 |
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