| |
 |
|
Class Information
Number: 166/370
Name: Wells > Processes > Producing the well > Including varying downhole pressure
Description: Process including a significant step of changing the below ground pressure by either (a) varying the pressure in the central conduit or pump inlet, as by a vacuum pump, or (b) varying formation pressure in a geopressurized zone so that recoverable gas is evolved from the formation fluid.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7428929 |
Method and apparatus for lifting liquids from gas wells |
Sep. 30, 2008 |
| 7409998 |
Critical velocity reduction in a gas well |
Aug. 12, 2008 |
| 7350581 |
Vapor recovery system |
Apr. 1, 2008 |
| 7320365 |
Methods for increasing production from a wellbore |
Jan. 22, 2008 |
| 7314089 |
Method of wellbore pumping apparatus with improved temperature performance and method of use |
Jan. 1, 2008 |
| 7293608 |
Liquid well stimulator |
Nov. 13, 2007 |
| 7252148 |
Plunger actuated pumping system |
Aug. 7, 2007 |
| 7234520 |
Well jet device for testing and studying formations and the operating method thereof |
Jun. 26, 2007 |
| 7210532 |
Method and apparatus for lifting liquids from gas wells |
May. 1, 2007 |
| 7210526 |
Solid state pump |
May. 1, 2007 |
| 7163063 |
Method and system for extraction of resources from a subterranean well bore |
Jan. 16, 2007 |
| 7152675 |
Subterranean hydrogen storage process |
Dec. 26, 2006 |
| 7147058 |
Method of and system for production of hydrocarbons |
Dec. 12, 2006 |
| 7143826 |
Method for determining sand free production rate and simultaneously completing a borehole |
Dec. 5, 2006 |
| 7117946 |
In-situ evaporation |
Oct. 10, 2006 |
| 7114572 |
System and method for offshore production with well control |
Oct. 3, 2006 |
| 7077208 |
Method and system for directing fluid flow |
Jul. 18, 2006 |
| 7073595 |
Method and system for controlling pressure in a dual well system |
Jul. 11, 2006 |
| 7051817 |
Device for improving oil and gas recovery in wells |
May. 30, 2006 |
| 7036577 |
Underground water pumping device |
May. 2, 2006 |
| 7032674 |
Process for increasing flow capacity of gas wells |
Apr. 25, 2006 |
| 7007759 |
Method and system for directing fluid flow |
Mar. 7, 2006 |
| 6899180 |
Dosing lance for polymerization material |
May. 31, 2005 |
| 6886636 |
Downhole fluid disposal apparatus and methods |
May. 3, 2005 |
| 6854518 |
Method and apparatus for enhancing production from an oil and/or gas well |
Feb. 15, 2005 |
| 6851480 |
Gas operated automatic, liquid pumping system for wells |
Feb. 8, 2005 |
| 6810960 |
Methods for increasing production from a wellbore |
Nov. 2, 2004 |
| 6786285 |
Flow control regulation method and apparatus |
Sep. 7, 2004 |
| 6769486 |
Cyclic solvent process for in-situ bitumen and heavy oil production |
Aug. 3, 2004 |
| 6705403 |
Production system and method for producing fluids from a well |
Mar. 16, 2004 |
| 6705404 |
Open well plunger-actuated gas lift valve and method of use |
Mar. 16, 2004 |
| 6695060 |
Downhole pumping system |
Feb. 24, 2004 |
| 6668925 |
ESP pump for gassy wells |
Dec. 30, 2003 |
| 6622791 |
Method and apparatus for increasing fluid recovery from a subterranean formation |
Sep. 23, 2003 |
| 6619402 |
System for enhancing fluid flow in a well |
Sep. 16, 2003 |
| 6615926 |
Annular flow restrictor for electrical submersible pump |
Sep. 9, 2003 |
| 6607607 |
Coiled tubing wellbore cleanout |
Aug. 19, 2003 |
| 6601651 |
Downhole gas compression |
Aug. 5, 2003 |
| 6598682 |
Reservoir communication with a wellbore |
Jul. 29, 2003 |
| 6585050 |
System and process for reducing the flowing bottom hole pressure in a natural gas well |
Jul. 1, 2003 |
| 6568477 |
Method and apparatus for conveying fluids, particularly useful with respect to oil wells |
May. 27, 2003 |
| 6564865 |
Oil and gas production with downhole separation and reinjection of gas |
May. 20, 2003 |
| 6557633 |
In-well contaminant stripper |
May. 6, 2003 |
| 6543543 |
Pump systems and methods |
Apr. 8, 2003 |
| 6502633 |
In situ water and soil remediation method and system |
Jan. 7, 2003 |
| 6497287 |
Production system and method for producing fluids from a well |
Dec. 24, 2002 |
| 6443229 |
Method and system for extraction of liquid hydraulics from subterranean wells |
Sep. 3, 2002 |
| 6413016 |
Methods of extracting liquid hydrocardon contaminants from underground zones |
Jul. 2, 2002 |
| 6371210 |
Flow control apparatus for use in a wellbore |
Apr. 16, 2002 |
| 6367566 |
Down hole, hydrodynamic well control, blowout prevention |
Apr. 9, 2002 |
|
|
|
