Class Information
Number: 166/157
Name: Wells > Screen with washing point or shoe
Description: Devices under the class definition comprising a conduit comprising a screen in combination with a means at the end of the conduit comprising a structure having a port for conducting fluid outwardly of the end of the conduit usually to wash the screen.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7487831 |
Downhole surge pressure reduction and filtering apparatus |
Feb. 10, 2009 |
| 7270181 |
Downhole surge pressure reduction and filtering apparatus |
Sep. 18, 2007 |
| 6966375 |
Downhole surge pressure reduction and filtering apparatus |
Nov. 22, 2005 |
| 6571869 |
Downhole surge pressure reduction and filtering apparatus |
Jun. 3, 2003 |
| 6568472 |
Method and apparatus for washing a borehole ahead of screen expansion |
May. 27, 2003 |
| 6533033 |
Pump protection system |
Mar. 18, 2003 |
| 6059032 |
Method and apparatus for treating long formation intervals |
May. 9, 2000 |
| 5669454 |
Drive point device |
Sep. 23, 1997 |
| 5570747 |
Drive point device |
Nov. 5, 1996 |
| 5449045 |
Drive point device |
Sep. 12, 1995 |
| 5377750 |
Sand screen completion |
Jan. 3, 1995 |
| 5348092 |
Gravel pack assembly with tubing seal |
Sep. 20, 1994 |
| 5310000 |
Foil wrapped base pipe for sand control |
May. 10, 1994 |
| 5295538 |
Sintered screen completion |
Mar. 22, 1994 |
| 4750557 |
Well screen |
Jun. 14, 1988 |
| 4700776 |
Sand control devices and method of installation thereof |
Oct. 20, 1987 |
|
