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Class Information
Number: 166/101
Name: Wells > Packer or plug and pump or plunger means exerting outward pressure
Description: Devices under the class definition comprising a packer or plug combined with a pump or plunger means for exerting outward fluid pressure against the wall of the surrounding conduit either in the space between a pair of packer or plug means or in the space beneath the packer or plug means.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7455107 |
Well jet device for logging horizontal wells and the operating method thereof |
Nov. 25, 2008 |
| 7409989 |
Well jet device and the operating method thereof for logging horizontal wells |
Aug. 12, 2008 |
| 7093652 |
Plunger with multiple jackets |
Aug. 22, 2006 |
| 7025134 |
Surface pulse system for injection wells |
Apr. 11, 2006 |
| 6955216 |
Device for injecting a fluid into a formation |
Oct. 18, 2005 |
| 6874577 |
Water, oil and gas well recovery system |
Apr. 5, 2005 |
| 6857472 |
Well pump device |
Feb. 22, 2005 |
| 6725916 |
Plunger with flow passage and improved stopper |
Apr. 27, 2004 |
| 6712151 |
Tubing expansion |
Mar. 30, 2004 |
| 6644399 |
Water, oil and gas well recovery system |
Nov. 11, 2003 |
| 6561269 |
Canister, sealing method and composition for sealing a borehole |
May. 13, 2003 |
| 6554580 |
Plunger for well casings and other tubulars |
Apr. 29, 2003 |
| 5576485 |
Single fracture method and apparatus for simultaneous measurement of in-situ earthen stress state and material properties |
Nov. 19, 1996 |
| 5353637 |
Methods and apparatus for borehole measurement of formation stress |
Oct. 11, 1994 |
| 4756364 |
Packer bypass |
Jul. 12, 1988 |
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