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Class Information
Number: 166/115
Name: Wells > Central chamber sealed with respect to prepositioned modified surrounding conduit
Description: Devices comprising a central conduit or centrally positioned receptacle in combination with a surrounding conduit, the surrounding conduit being prepositioned in final position in the earth before the central conduit or receptacle is associated therewith, there being a means sealing a portion of the annular space between the central conduit or receptacle and the surrounding conduit.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7293437 |
Gasket and washing machine using the same |
Nov. 13, 2007 |
| 7278493 |
Auto entry guide |
Oct. 9, 2007 |
| 7231970 |
Non-rotational casing hanger and seal assembly running tool |
Jun. 19, 2007 |
| 7216872 |
Seal for use with pipe and flange assemblies |
May. 15, 2007 |
| 7198099 |
Method and system for injecting a treatment fluid into a well |
Apr. 3, 2007 |
| 7191833 |
Sand control screen assembly having fluid loss control capability and method for use of same |
Mar. 20, 2007 |
| 7128157 |
Method and apparatus for treating a well |
Oct. 31, 2006 |
| 7124829 |
Tubular expansion fluid production assembly and method |
Oct. 24, 2006 |
| 6802371 |
Template and system of templates for drilling and completing offset well bores |
Oct. 12, 2004 |
| 6745846 |
Expandable downhole tubing |
Jun. 8, 2004 |
| 6722426 |
Gasket with multiple sealing surfaces |
Apr. 20, 2004 |
| 6513601 |
Method for setting a packer in a well bore, and a packer |
Feb. 4, 2003 |
| 6494259 |
Downhole flame spray welding tool system and method |
Dec. 17, 2002 |
| 6382324 |
One trip seal latch system |
May. 7, 2002 |
| 6318471 |
Method for installing tubular members axially into the earth |
Nov. 20, 2001 |
| 6283218 |
Locating and locking mandrel for flow control device |
Sep. 4, 2001 |
| 6247537 |
High pressure fluid seal for sealing against a bit guide in a wellhead and method of using |
Jun. 19, 2001 |
| 6202745 |
Wellhead apparatus |
Mar. 20, 2001 |
| 5996697 |
Static wellhead plug |
Dec. 7, 1999 |
| 5988284 |
Method and apparatus for enhancing well performance |
Nov. 23, 1999 |
| 5909769 |
Fluid loss device |
Jun. 8, 1999 |
| 5865255 |
Full bore nipple and associated lock mandrel therefor |
Feb. 2, 1999 |
| 5765638 |
Tool for use in retrieving an essentially cylindrical object from a well bore |
Jun. 16, 1998 |
| 5735344 |
Tubing hanger with hydraulically energized metal annular seal with new design tubing hanger running tool |
Apr. 7, 1998 |
| 5617918 |
Wellbore lock system and method of use |
Apr. 8, 1997 |
| 5542475 |
Blanking plug assembly |
Aug. 6, 1996 |
| 5518072 |
Downhole tool for assisting in separating and reconnecting well tubing |
May. 21, 1996 |
| 5509476 |
Short wellhead plug |
Apr. 23, 1996 |
| 5404948 |
Injection well flow measurement |
Apr. 11, 1995 |
| 5390735 |
Full bore lock system |
Feb. 21, 1995 |
| 5348087 |
Full bore lock system |
Sep. 20, 1994 |
| 5309993 |
Chevron seal for a well tool |
May. 10, 1994 |
| 5307879 |
Positive lockdown for metal seal |
May. 3, 1994 |
| 5303772 |
Well completion apparatus |
Apr. 19, 1994 |
| 5299643 |
Dual radially locked subsea housing |
Apr. 5, 1994 |
| 5285853 |
Casing hanger seal with test port |
Feb. 15, 1994 |
| 5240073 |
Down-hole concentric chamber gas separator and method |
Aug. 31, 1993 |
| 5219028 |
Well casing and well casing method |
Jun. 15, 1993 |
| 5186258 |
Horizontal inflation tool |
Feb. 16, 1993 |
| 5176216 |
Bypass seating nipple |
Jan. 5, 1993 |
| 5133404 |
Rotary running tool for rotary lock mandrel |
Jul. 28, 1992 |
| 5110144 |
Casing hanger seal assembly |
May. 5, 1992 |
| 5095991 |
Device for inserting tubular members together |
Mar. 17, 1992 |
| 5082061 |
Rotary locking system with metal seals |
Jan. 21, 1992 |
| 5082053 |
Arrangement for cleaning contaminated ground water |
Jan. 21, 1992 |
| 5076356 |
Wellhead equipment |
Dec. 31, 1991 |
| 5070942 |
Well tubing hanger sealing assembly |
Dec. 10, 1991 |
| 5026074 |
Annular metal-to-metal seal |
Jun. 25, 1991 |
| 4984631 |
System and plug for plugging a conduit |
Jan. 15, 1991 |
| 4915175 |
Well flow device |
Apr. 10, 1990 |
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